EP1191633A2 - Terminal block with insulation displacement terminals and members to contact the wires to the terminals - Google Patents

Abstract

A bus bar (14) is provided with a stationary resilient contact (15) which has a pair of knife edges (16) separated by a slit. A pair of guide pins (30) extending laterally from the opposite sides of an actuator (6) moves the actuator relative to the stationary contact. The guide grooves (32) are formed on the walls of a housing chamber, to receive the guide pins.

Description

• einem Isolierstoffgehäuse,
• wenigstens einer im Isolierstoffgehäuse angeordneten Anschlußvorrichtung für mindestens einen elektrischen Leiter, der wenigstens eine Leitungsader und eine die Leitungsader umgebende Isolierung aufweist, wobei die Anschlußvorrichtung eine Kontaktfeder mit einer Kontaktschneide zum Auftrennen der Isolierung des elektrischen Leiters und einen Kontaktierungsbereich zur Kontaktierung der wenigstens einen Leitungsader aufweist,
• wenigstens einem im Isolierstoffgehäuse verschieblich geführten Kontaktbetätigungsstück, das wenigstens ein seitliches Führungsmittel aufweist, welches mit korrespondierenden seitlichen Führungsmitteln im Isolierstoffgehäuse zusammenwirkt.

The invention relates to a terminal block

• an insulating housing,
• at least one connection device arranged in the insulating material housing for at least one electrical conductor, which has at least one line wire and an insulation surrounding the line wire, the connection device having a contact spring with a contact blade for separating the insulation of the electrical conductor and a contact area for contacting the at least one line wire,
• at least one contact actuating piece which is displaceably guided in the insulating material housing and has at least one lateral guiding means which interacts with corresponding lateral guiding means in the insulating material housing.

A terminal block with a connection device penetrating the conductor insulation is known from DE 196 27 209. The connection device shown in this document has contact cutting with cutting edges that form contacting surfaces expand. The contacting areas enable a larger area Contacting the line wire of the connected electrical conductor as the actual Contact cutting to disconnect the conductor, which is essentially the conductor Touch "like a line".

The solution has been found to support the external suspension of the connecting devices the DE 197 32 182 C1 proven. This document discloses inter alia an insulation displacement contact with a contact spring with two resilient contact legs that have a contact slot limit, wherein a U-shaped force spring is provided, which essentially has flat spring legs. The U-shaped power or spring is formed as a component separate from the actual contact spring. The essentially plate-shaped spring legs are approximately or essentially vertical to the insulation displacement or the contacting areas of the contact legs aligned and encompass them along the contact slot over a predetermined Width.

A generic terminal block is known from EP 0 936 697 A1. The contact springs are in this prior art at both ends of one Busbar formed, which is aligned in the insulating housing such that the insertion openings of the two contact springs point away from each other, i.e. a The conductor is inserted from the outside into the contact springs relative to the mounting rail. To do that Actuating the actual insertion of the conductors into the contact springs are contact actuators provided which is arranged on the top of the insulating housing are. The contact actuators are designed like a slide and are used for the first assembly from the outside in the insulating housing. You point each have a conductor insertion opening and under an essentially U-shaped recess in the foot area lateral driving surfaces as well as a depth stop for the Ladder on.

In the upper opening area of the insulating material housing are dovetail-like Guides formed on which the contact actuator with corresponding on both sides Dovetail grooves are slidably guided. The contact actuator is by means of an actuating tool between a conductor insertion position and a contact position, these two positions by a rest position are defined.

This terminal block has proven itself. It is for different purposes however, it is desirable to further develop the design of the terminal block in such a way that terminal blocks can be realized with particularly small dimensions become. The object of the invention is to solve this problem.

The invention solves this problem by the subject matter of claim 1 the guide means of the contact actuating piece are designed as lateral guide pins, which engage in guide grooves of the insulating material housing, the guide pin and the guide grooves are matched to one another in such a way that the guide pins are pivotable and displaceable in the guide grooves, so that the Guide pin in the sense of a superimposed swivel and / or pendulum movement and a linear and / or curve movement can be displaced in the guide grooves. Through the combined swivel and linear and / or curve movement of the contact actuators can the length of the guide grooves in the insulating material housing shorten compared to simply moving the contact actuators. About that tilting is also particularly effectively avoided. Preferably, the Guide grooves as straight or curved slots in the walls of the insulating material housing educated.

According to a further advantageous embodiment of the invention, which is also from The subject of claim 1 can be viewed independently, have the contact springs of the two connection devices in the terminal housing to each other and the contact actuators are arranged between the contact springs. It essentially works only pressure forces when switching on and off.

According to further variants of the invention, the pins have a circular or opposite a circular shape flattened cross section. The geometry of the cones with a cross-section flattened in relation to the circular shape, it allows pivoting to limit the contact actuating pieces to a predeterminable angular amount.

According to a further variant, which is also to be considered independently, it is provided that at least the actuating piece in its area engaging in the insulating material housing one, preferably two to the inner walls of the insulating material housing has side openings, so that the conductor to be wired essentially can extend to the inner wall of the insulating material housing. By this measure is crucially possible to achieve a narrower design, i.e. With a relatively narrow terminal block, relatively wide conductors can also be connected become. On the other hand, if the actuator surrounds the conductor all around, goes Width lost for the walls of the actuator.

Further advantageous embodiments can be found in the remaining subclaims.

Fig. 1a-e

das Einführens eines Leiters in die Anschlußvorrichtung einer erfindungsgemäße Reihenklemme in fünf aufeinanderfolgenden Schritten; und

Fig. 2a-c

den Vorgang des Lösens des Leiters aus den Anschlußvorrichtungen der Reihenklemme aus Fig. 1 in drei Schritten;

Fig. 3a-c

ein Schiebestück für die Reihenklemme aus Fig. 1 und 2;

Fig. 4, 5

eine weitere Seitenansicht und eine Sprengansicht einer erfindungsgemäßen Reihenklemme;

Fig. 6 und 7

das Be- und Entschalten einer dritten Reihenklemme;

Fig. 9

eine Ansicht eines Teiles einer vierten Reihenklemme der Erfindung mit Schneidanschlüssen;

Fig. 10

eine perspektivische Ansicht eines Schneidanschlusses der Reihenklemme aus Fig. 9 nebst Kontaktbetätigungsstück;

Fig. 11

einen Schnitt senkrecht zu Fig. 9 durch den oberen Bereich des Klemmengehäuses und das Kontaktbetätigungsstück; und

Fig. 12

eine Ansicht einer fünften Reihenklemme mit Schneidanschlüssen.

Exemplary embodiments of the invention are described in more detail below with reference to the drawing. It shows:

Fig. 1a-e

the insertion of a conductor into the connecting device of a terminal block according to the invention in five successive steps; and

2a-c

the process of releasing the conductor from the connecting devices of the terminal block of Figure 1 in three steps.

3a-c

a sliding piece for the terminal block of Figures 1 and 2;

4, 5

another side view and an exploded view of a terminal block according to the invention;

6 and 7

switching a third terminal block on and off;

Fig. 9

a view of part of a fourth terminal block of the invention with cutting terminals;

Fig. 10

a perspective view of a cutting terminal of the terminal block of Figure 9 together with contact actuator.

Fig. 11

a section perpendicular to Figure 9 through the upper portion of the terminal housing and the contact actuator. and

Fig. 12

a view of a fifth terminal block with cutting connections.

Fig. 1 shows a terminal block 2 - here a feed-through terminal - with one here one-piece plastic housing 4, which in its lower in Fig. 1 Area locking feet 6, 8 for snapping the terminal block onto a - not shown here - mounting rail and in its upper area two connection devices 10, 12 for contacting electrical conductors. The connection devices 10, 12 are conductively connected to each other here via a busbar 14, the ends of which first pointing upwards at right angles and then pointing at right angles to each other are bent. The ends of the busbar thus point towards the middle of the terminal or each other and each form a type of "U" placed on the side.

In alternative embodiments, it is also conceivable for the busbar 14 to have multiple parts train and / or to implement further terminal variants electronic Components to switch between the connecting devices 10, 12.

The connection devices 10, 12 are each implemented in so-called IDC technology. They each encompass the slotted ones facing each other Ends of the busbar 14 have a contact spring 15. These each have one mouth-like widening, also slotted contact blade 16 and a relative to the contact cutting edge 16 along the slot 18 of the busbar 14 offset contacting area 20, the contact blade 16 and the contacting area 20 of the busbar 14 in one piece from a uniform material or else several pieces, e.g. consisting of two different materials can, the different materials specifically tailored to the functions cutting (e.g. steel cutting) and contacting (e.g. copper) are adapted.

If a conductor is inserted into the busbar 14 which is slotted at its ends, the insulation of the conductor is first cut through by the contact blades 16 and widened somewhat when the conductor was pushed in further. Then they will Contacting areas 20 of the contact spring against the line wires of the conductor 36 (see Fig. 1b) pressed.

The contact springs 15 are in the contact area 20 of a cross section essentially U-shaped spring 22 is enclosed.

The force spring 22 has according to the teaching of DE 197 32 182 C1 essentially flat spring legs 24, the substantially flat Spring leg 24 substantially perpendicular to the contact blade 16 and the Contacting area 20 run and this along the contacting area 20 embrace.

In a further development of the above-mentioned document, the force springs 22 make the U-shaped one End region of the busbar 14 not only in the region of the contact spring 15, which forms the one longitudinal leg of the "U" but also in the area of the lower one Longitudinal leg of the busbar 14 edged. The longitudinal legs of the U-shaped Power spring 22 thus enclose the longitudinal leg of the lying "U", which the busbar 14 forms in its end regions.

This training offers the particular advantage of reducing the wiring forces introduced into the insulating material housing 4 or the terminal support.

Unlike the solution of EP 0 936 697 A1, it is space-saving due to the clever arrangement of the ends facing each other or inwards towards the mounting rail the busbar 14 also possible, the conductor relative to the mounting rail from "inside outward "into the contact cutting edges 14 and the contacting areas 20, which enables the width of the terminal block to be compared to EP 0 926 697 to reduce on both sides of the mounting rail.

The conductor is inserted into the contact springs 15 with the aid of an im Insulated plastic housing with sliding contact and also with an oscillating contact actuator 26. The operation with a contact actuator 26 is indeed already known per se from EP 0 926 697. Unlike in this document, it is with the 1 but by the measure, the ends of the busbar with to align the contact blades towards each other towards the "middle of the clamp", possible, the contact actuating pieces 26 between the contact springs 15 - ie Arrange the middle of the terminal.

The contact actuating pieces 26 are in each case during the initial assembly from above Openings 28 of the preferably one-piece insulating material housing 4 are used and there displaceably guided essentially parallel to the contact springs 15.

The contact actuating pieces 26 have one in the side view of FIGS. 1 and 3a in the broadest sense from "top" to "bottom", i.e. towards the mounting rail widening e.g. "Pear-like" shape and are from an insertion hole 34 for penetrates the conductor 36 (see Fig. 1b). They are slightly behind from the opening 28 above from the insulating housing 4, so that their respective switching position in the insulating housing 4 can be seen from the outside, which facilitates the insertion of the conductor 36.

In their area facing the contact cutting edge 16, they are also provided with a recess 38 provided. They also have a conductor contact surface 39 and a receptacle 40 for the contact blade 16 after cutting the conductor insulation, so is shaped so that, for reasons of strength, essentially the shape of the contact cutting edges maps.

The function of this arrangement is in terms of wiring the terminal block from Fig. 1a-e and with regard to the disconnection of the terminal block 4 from Fig. 2a-c clear.

First, a conductor (not shown in Fig. 1a) is inserted into the opening 34 of the contact actuator 26 introduced. According to Fig. 1a, it is possible on the contacting area 16 facing away from the contact actuating pieces 26 in the openings 28 of the insulating housing 4 between the insulating housing 4 and the Contact actuating piece 26 an actuating tool 42 in the insulating housing introduce. The actuating tool 42 meets a guide slope 44 in the Isolierstoffgehäuse and urges the contact actuator 26 (see Fig. 1b) with the conductor inserted therein toward the contact blade 16, the contact actuator - See Fig. 1b - first swinging slightly on its guide pin 30 is pivoted and then performing a combined rotary and linear movement moved further in the guide groove 32.

If the actuating tool 42 is inserted further into the opening 28, it comes finally at the ready e.g. with the busbar 14 (see Fig. 1c). Thereupon will he touching down on the busbar 14 in the direction of the connecting device 10 or 12 pivoted (see Fig. 1d and 1e).

When the actuating tool 42 is moved, the contact cutting edges The conductor insulation is cut and when the conductor 36 is pushed further into the Slot 18 expanded until the contact actuator 26 with the inserted therein Le with the receptacle 40 overlaps the contact blades 16, according to FIG the line core (s) of the conductor 36 the contacting areas 20 of the connection devices Contact 10, 12.

2a-c show the disconnection of the terminal block of FIG. 1.

When disconnected, the actuating tool 42 is on the relative to the mounting rail or terminal center (level K) on the outside of the contact actuator 26 inserted into the opening 28 of the insulating housing 4 (Fig. 2a) until it on a the metal parts of the contact spring 15 protective stop 46 of the contact actuator 26 comes to the plant.

Thereupon, the contact operating piece 26 with the operating tool 42 becomes Middle of the clamp or in the direction of the mounting rail (Fig. 2b).

The contact actuating piece 26 pulls the conductor 36 out of the contacting area 20 from the contact spring 15 until it finally slides past the contact cutting edge 16 out of the contact spring into the position of FIG. 2c, in which the conductor 36 is pulled upward out of the contact actuating piece 26 can.
Further advantages of the invention result directly from the above explanations of switching the terminal block on and off.

The leadership of the contact actuator 26 in the manner of a superimposed rotary or Pendulum and a linear movement with the guide pin 30 in the guide grooves 32 particularly reliably prevents the contact actuating pieces 26 from tilting when Switching the terminal block on and off. It is also possible for the guide grooves 32 to be shorter than with a purely linear movement of the contact actuating pieces 26 in the guide grooves 32 would be conceivable. Especially during an apprenticeship of the guide grooves 32 as elongated holes (possibly also curved), but it is advantageous that compared to training the contact actuators as alone Slidable elements can be shortened, as this increases the stability of the insulating housing in this area compared to a receiving groove with a length as in a pure linear guide is necessary.

A taper 47 in the guide groove 32 divides it into locking positions for the Guide pin 30, which are formed on both sides of the taper and into which the guide pin noticeably engages when actuated.

3 shows another advantage of the invention particularly clearly.

Thereafter it is provided that the actuator 26 in its lower, in the insulating housing engaging area 26 'at least one, preferably two - here on both sides - lateral, facing the inner walls of the insulating material housing has slot-like openings 54a, b, so that the conductor to be wired essentially can extend to the inner wall of the insulating material housing. The insulation of the conductor can pass through these slot-like openings 54a, b. Only in the upper area 26o, which does not engage in the insulating material housing, becomes the conductor enclosed all around. So with a small grid size or a small one Construction width also conductors with a relatively large cross-section can be inserted.

Corresponding openings can also be made in the metallic spring or force spring 22 be provided.

This measure makes a narrower design possible in a decisive manner, i.e. With a relatively narrow terminal block, relatively wide conductors can also be used be wired. On the other hand, if the actuator surrounds the conductor all around, width for the walls of the actuator is lost.

The web 30 bridges the slot-like openings. However, since the webs 30 fully engage in the guide grooves 32 can also in the area of the webs 30 Conductors have at least one diameter which corresponds to the width of the opening 28 or the distance between the two webs 30 corresponds to each other.

An alternative embodiment is shown in FIGS. 6 and 7. With the terminal block shown in this figure 2, the contact actuator is also with lateral guide pins 30 provided, but these are guided in the guide grooves 32 purely displaceably. Such an embodiment can also be implemented. It still has the advantage the arrangement of the actuators relative to the connecting devices 10, 12 for Middle of the clamp. However, the guide grooves 32 must be made a little longer than in the embodiment of FIGS. 1 and 2.

6, the stop 46 is further provided with a locking projection 50 which for Latching engagement in a recess 52 of the terminal housing 4 is designed.

8 shows a further advantageous variant of the invention. Then the actuator 26 guided in an arcuate guide groove 32, the center M of the circular arc of the guide groove 32 lies above the housing. This will a slim design is feasible.

The superimposed swiveling and curve movement is preferably also implemented here, the pivoting behavior can be in less preferred variants - as in FIG. 8 shown - but also largely minimized.

8, the U of the busbar 14 is particularly narrow, extends but beyond the rear area of the power spring 22, with the busbar 14 in the rear area of the U, ie in the area of the base leg in the insulating housing supported. The busbar 14 is also based on an abutment W. in the spring 22 from.

In the embodiment of FIG. 9, the contact actuator 26 is essentially guided linearly in the guide grooves 32. As can be seen in FIG. 10, grip the contact actuator 26 and the insulating material housing 4 in the upper area by means of a dovetail connection 55 into one another, i.e. the top edges of the Web 30 of the contact actuating pieces 26 and the lower edges of the upper section 26o of the contact actuator and the associated sections of the Isolierstoffgehäuses 2 are with mutually corresponding guide slopes 56a, b, 58a, b. This ensures safe linear guidance of the guide piece even when torque is applied by moving the screwdriver.

Another difference between the exemplary embodiment in FIG. 9 and that of FIG. 1 lies in Spring geometry and their arrangement. Unlike in FIG. 1, the busbar runs not U-shaped inside the power spring 22 but first penetrates the power spring 22 in the contacting area 20, then runs outside the force spring 22 in Direction of the mounting rail 60 vertically downwards and finally turns from the Force spring 22 vertically, so that the busbar in the view of FIG. 10 in the area the power spring essentially has a z-like geometry. With the lower one Leg of the Z, the busbar 14 is placed on a further busbar 62, which the various connection devices 10, 12 or their busbar pieces 14 connects together.

As can be seen in FIG. 11, more than two can also be on the busbar 62 (here three, but also four or more possible) attaching connection devices 10, 12, if the insulating housing is widened accordingly.

According to FIGS. 9 and 11, the force spring 22 is pointing towards the cutting edge 16 Side in the area of the lower corner relative to the mounting rail with a projection 64 provided which engages under an abutment 66 in the insulating material housing. There the busbar 14 and the busbar 62 together form a further abutment 67 reach under the insulating housing and also further sides of the power spring 22 rest against the walls of the insulating material housing, a defined fit of the Force spring 22 ensured in the insulating housing 2.

In the embodiment of FIGS. 9 and 11, a conductor (not shown) in the opening 34 of the contact actuator 26 inserted. Again, it is possible on the side of the contact actuating pieces facing away from the contacting area 16 26 in the openings 28 of the insulating material housing 4 between the insulating material housing 4 and the contact operating piece 26 an operating tool 42 in insert the insulating housing. The actuating tool 42 meets one Guide bevel 44 in the insulating material housing and urges the contact actuating piece 26 with the conductor inserted therein in the direction of the contact cutting edge 16, the Contact actuator with a linear movement further in the guide groove 32 is moved.

If the actuating tool 42 is inserted further into the opening 28, it comes finally at the ready e.g. with the power rail 14. Then it is on the Busbar 14 or a housing stop touching in the direction of the connecting device 10 or 12 pivoted.

When disconnected, the actuating tool 42 is on the relative to the mounting rail or terminal center (level K) on the outside of the contact actuator 26 inserted into the opening 28 of the insulating housing 4 until it is on the metal parts the contact spring 15 protective stop 68 of the insulating housing System comes on which the contact actuator 26 "rail-like" with the operating tool 42 moved to the middle of the terminal or in the direction of the mounting rail becomes. It should also be emphasized that switching off is also possible if the Screwdriver not to the left as shown in the left part of FIG. 9 but pivoted to the right placed on the stop 68 and then pivoted to the left becomes. The stop 68 or another approach not shown here in the Insulation housing can also be designed in such a way that protection against mismating the conductor is realized when it is inserted into the terminal block.

reference numeral

terminal

2

Insulated

4

Rest feet

6, 8

connecting devices

10, 12

conductor rail

14

contact spring

15

Contact cutting

16

slot

18

contacting

20

force spring

22

spring leg

24

Contact actuator member

26

openings

28

spigot

30

guide

32

insertion hole

34

ladder

36

recess

38

Head contact surface

39

admission

40

operating tool

42

guide slope

44

attack

46

rejuvenation

47

rail

48

catch projection

50

recess

52

openings

54

dovetail joint

55

guide slopes

56a, b, 58 a, b

rail

60

conductor rail

62

head Start

64

abutment

66

abutment

67

attack

68

midplane

K

abutment

W

Claims (21)

Terminal block, with a) an insulating material housing (4), b) at least one connection device (10, 12) arranged in the insulating material housing (4) for at least one electrical conductor (36), which has at least one line wire and an insulation surrounding the line wire, the connection device (10, 12) having a contact spring (15) having a contact cutting edge (16) for separating the insulation of the electrical conductor and a contacting area (20) for contacting the at least one line core, c) at least one contact actuating piece (26) which is displaceably guided in the insulating material housing (4) and has at least one lateral guiding means (30) which cooperates with corresponding lateral guiding means (32) in the insulating material housing,
characterized in that d) the guide means of the contact actuating piece (26) are designed as lateral guide pins (30) which engage in guide grooves (32) of the insulating material housing (4), the guide pins (30) and the guide grooves (32) being matched to one another such that the Guide pins (30) can be pivoted and displaced in the guide grooves (32), so that the guide pins (30) can be displaced in the guide grooves (32) in the sense of a superimposed pivoting and / or pendulum movement and a linear and / or curve movement. Terminal block according to Claim 1, characterized in that the guide grooves (32) are designed as straight or curved elongated holes in the walls of the insulating material housing (4). Terminal block according to the preamble of claim 1 or according to claim 1 or 2, characterized in that the contact springs (15) of the two connection devices (10, 12) in the terminal housing (4) face each other and that the contact actuating pieces (26) between the contact springs (15 ) are arranged. Terminal block according to one of the preceding claims, characterized in that the pins (30) have a circular cross section or a cross section which is flattened in relation to a circular shape. Terminal block according to one of the preceding claims, characterized in that the contact actuating pieces (26) can each be inserted from above into openings (28) of the preferably integrally formed insulating material housing (4) during the initial assembly. Terminal block according to one of the preceding claims, characterized in that the contact actuating pieces (26) have a shape which widens in sections in the direction of the latching feet (6, 8) and are penetrated by an insertion bore (34) for the conductor (36). Terminal block according to one of the preceding claims, characterized in that the contact actuating pieces (26) protrude slightly upward from the opening (28) from the insulating housing (4). Terminal block according to one of the preceding claims, characterized in that the contact actuating pieces (26) are provided with a recess (38) in their area facing the contact cutting edge (16) and a conductor contact surface (39) and a receptacle (40) for the contact cutting edge (16 ) which is shaped so that it essentially reflects the shape of the contact cutting edges. Terminal block according to one of the preceding claims, characterized in that the openings (28) in the insulating material housing are designed such that an actuating tool (42) can be guided in the opening (28) between the insulating material housing (4) and the contact actuating piece (26) Terminal block according to one of the preceding claims, characterized in that the insulating housing (4) is provided with a guide bevel (44) for the actuating tool (42). Terminal block according to one of the preceding claims, characterized in that the opening (28) in the insulating material housing (4) preferably extends as far as the busbar (14). Terminal block according to one of the preceding claims, characterized in that the contact actuating piece (26) is provided on its outer side relative to the middle of the terminal (plane K) with a stop (46) for attaching the actuating tool (42) when it is switched off. Terminal block according to one of the preceding claims, characterized in that the stop (46) is provided with a latching projection (50) which is designed for latching engagement in a recess (52) in the terminal housing (4). Terminal block according to one of the preceding claims, characterized in that a taper (47) is formed in the guide groove (32) which divides it into locking positions for the guide pin (30). Terminal block according to one of the preceding claims, characterized in that the contact springs (15) are each provided with a force spring (22) with a U-shaped cross section. Terminal block according to one of the preceding claims or according to the preamble of claim 1, characterized in that the actuating piece (26) has in its area engaging in the insulating housing at least one, preferably two, lateral openings (54) facing the inner walls of the insulating housing, so that the conductor to be wired can extend essentially up to the inner wall of the insulating material housing. Terminal block according to one of the preceding claims, characterized in that the contact actuating piece (26) and the insulating material housing (4) engage in one another in the upper region by means of at least one dovetail connection (55). Terminal block according to one of the preceding claims, characterized in that, in order to form the dovetail connection (55), the upper edges of the webs (30) of the contact actuating pieces (26) engaging in the guide grooves (32) and the lower edges of the upper section (26o) of the contact actuating piece and the associated sections of the insulating material housing (2) are provided with mutually corresponding guide bevels (56a, b; 58a, b). Terminal block according to one of the preceding claims, characterized in that the force spring (22) is provided on its side facing the contact cutting edge (16) in the region of the lower corner relative to the mounting rail with a projection (64) which has an abutment (66) in the Insulated housing (2). Terminal block according to one of the preceding claims, characterized in that the insulating housing (4) has a stop (68) protecting the metal parts of the contact spring (15), on which the contact actuating piece (26) with the actuating tool 42 to the middle of the terminal or in the direction of the mounting rail is movable. Terminal block according to one of the preceding claims, characterized in that an extension for securing against mismating is formed in the insulating housing.

Images