EP0161946A1 - An einen Schutzschalter ankuppelbare Zusatzeinheit - Google Patents

An einen Schutzschalter ankuppelbare Zusatzeinheit Download PDF

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Publication number
EP0161946A1
EP0161946A1 EP85400258A EP85400258A EP0161946A1 EP 0161946 A1 EP0161946 A1 EP 0161946A1 EP 85400258 A EP85400258 A EP 85400258A EP 85400258 A EP85400258 A EP 85400258A EP 0161946 A1 EP0161946 A1 EP 0161946A1
Authority
EP
European Patent Office
Prior art keywords
lever
circuit breaker
additive
tripping
auxiliary
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP85400258A
Other languages
English (en)
French (fr)
Other versions
EP0161946B1 (de
Inventor
Pierre Lemarquand
Henri Pierrot
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telemecanique SA
Original Assignee
La Telemecanique Electrique SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by La Telemecanique Electrique SA filed Critical La Telemecanique Electrique SA
Publication of EP0161946A1 publication Critical patent/EP0161946A1/de
Application granted granted Critical
Publication of EP0161946B1 publication Critical patent/EP0161946B1/de
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/50—Manual reset mechanisms which may be also used for manual release
    • H01H71/62—Manual reset mechanisms which may be also used for manual release with means for preventing resetting while abnormal condition persists, e.g. loose handle arrangement
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/20—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by excess current as well as by some other abnormal electrical condition
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0264—Mountings or coverplates for complete assembled circuit breakers, e.g. snap mounting in panel
    • H01H71/0271—Mounting several complete assembled circuit breakers together
    • H01H2071/0278—Mounting several complete assembled circuit breakers together with at least one of juxtaposed casings dedicated to an auxiliary device, e.g. for undervoltage or shunt trip
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/04—Means for indicating condition of the switching device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/10—Operating or release mechanisms
    • H01H71/12—Automatic release mechanisms with or without manual release
    • H01H71/46—Automatic release mechanisms with or without manual release having means for operating auxiliary contacts additional to the main contacts
    • H01H71/462—Automatic release mechanisms with or without manual release having means for operating auxiliary contacts additional to the main contacts housed in a separate casing, juxtaposed to and having the same general contour as the main casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H83/00—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current
    • H01H83/02—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents
    • H01H83/04—Protective switches, e.g. circuit-breaking switches, or protective relays operated by abnormal electrical conditions otherwise than solely by excess current operated by earth fault currents with testing means for indicating the ability of the switch or relay to function properly

Definitions

  • the present invention relates to an additive block that can be coupled to a circuit breaker.
  • Such additive blocks are generally used as residual current protection devices, shunt trip devices, undervoltage trip devices or trip devices of any other type capable of causing the opening of the circuit breaker from a given signal. They can also be used as auxiliary signaling devices to signal on-site or remote tripping of the circuit breaker.
  • a circuit breaker generally comprises at least two separable contacts and a tripping mechanism with storage spring and tripping shaft, this mechanism being subject, to separate the contacts, to a thermal tripping device and / or to a tripping device magnetic capable of acting in particular in the event of a short circuit or overcurrent; it also includes a manual or motorized reset means of the trigger mechanism.
  • the trigger generally comprises an unlocking electromagnet and a mechanical energy storage spring kept under tension by a latching mechanism;
  • the unlocking electromagnet therefore requires only low power to release the mechanism.
  • the mechanical energy released causes tripping by acting on the tripping shaft of the circuit breaker via an appropriate link mechanism. After each trip, it is again obviously necessary to manually reset, for example by means of a lever, the latching mechanism of the additive block.
  • the circuit breaker and the additive block have a means accessible from the outside and allowing the mechanical transmission of the tripping action, either in the additive block-circuit breaker direction with a trigger additive, or in the circuit breaker-additive block direction with an additive signaling.
  • the object of the present invention is in particular to obviate the aforementioned drawbacks of known devices by creating an additive block which can be coupled to a circuit breaker and which only authorizes resetting of the circuit breaker by a conscious and voluntary action by the user.
  • an add-on block for a circuit breaker of the type described comprising in an enclosure an auxiliary tripping and / or signaling member, and a connection mechanism with, on the one hand, the tripping mechanism of the circuit breaker and, d on the other hand, the auxiliary member in order to communicate to the first a control movement in response to the triggering of the second or vice versa, as well as a manual reset member capable of cooperating with the linkage mechanism to restore to its initial position the active part of said mechanism associated with the auxiliary member after tripping of the circuit breaker;
  • the connecting mechanism has a locking piece capable of taking a first and a second position corresponding respectively to the switching on and off of the circuit breaker, the locking piece cooperating in its first position with the manual reset member to prevent manual actuation thereof and disappearing in its second position to allow actuation of the reset member.
  • the manual reset member and the locking piece have abutment means cooperating in the second position of this piece and during manual actuation of the member to temporarily prevent reclosing of the circuit breaker.
  • connection mechanism may comprise a pivoting emitting lever biased by a spring and carrying an indicator element this lever is coupled to the tripping mechanism of the circuit breaker and cooperates by means of elements of 'hooking with a pivoting lever intermediate between said transmitter lever and the auxiliary member; the transmitter lever and the intermediate lever may have associated support elements to produce, at the end of the triggering stroke, a reminder of the intermediate lever and the discharge, and if necessary, the rearming of the auxiliary member.
  • this is a relay magnetized by permanent magnet, this allows to easily close its magnetic circuit.
  • the link mechanism can comprise a receiving lever carrying an indicator element and coupled to the tripping mechanism of the circuit breaker and can be activated by this mechanism, and cooperating by means of hooking elements with a pivoting lever intermediate between said receiving lever and the auxiliary member.
  • the add-on unit 10 in FIGS. 1 to 3 comprises, in a molded housing 11, an auxiliary triggering member 12 provided with a pushing or pulling piece 13, this piece being presently constituted by a pusher and acting in the direction of the arrow F in response to a voltage or current signal, for example a differential current appearing at the terminals of the auxiliary member 12 connected to the main circuit of the circuit breaker by conductors 14, 15.
  • the block 10 also has an intermediate lever 20.
  • the lever 20 is mounted for rotation on an axis or on pins 21 and it comprises a first arm 22 whose end 22a cooperates with the pusher 13 and a second arm 23 opposite the first with respect to the axis 21 and whose end 23a has a role which will be explained later. Below the axis 21, the lever 20 has a spoiler 24.
  • the lever 20 is subjected clockwise to a torque produced for example by the force of a spring shown diagrammatically by the arrow F 1 acting on the arm 22 or by any other equivalent means.
  • a lever 30 for transmitting the trip signal to the circuit breaker is mounted for rotation on an axis or on trunnions 31 and it has, on the same arm or on slightly diverging arms, on the one hand, a hook 32 capable of cooperating with the spoiler 24 of the intermediate lever 20 and, on the other hand, a ramp 33 designed to cooperate with the end 23a of the arm 23 with a view to pushing the latter clockwise and returning the pusher 13 to its starting position as it will be explained later.
  • the lever 30 comprises, above the axis 31, an indicator element 34 visible in the triggered position (FIG. 2) through a window 16 of the housing, the lever 30 is furthermore biased counterclockwise by a force shown in F 2 and produced by a spring or any other equivalent means.
  • a manual reset member 40 consisting of a key, a lever or a push-button is arranged on the front face of the housing so as to be able to rotate around an axis 41 or of pins counterclockwise during a reset operation (FIG. 3). It comprises at its left end a spout or a stop 42 turned upwards and intended to cooperate with a shoulder 17 provided on a face of the housing as well as a finger, boss or other equivalent support element 43 turned downwards and intended to push the lever 30 clockwise.
  • the reset key 40 further comprises a concave shoulder 44 and provided with an adjoining flange or spout 45.
  • the shoulder 44 is arranged to cooperate with a locking lever 50 possibly with cam.
  • the lever 50 includes a convex bearing surface 52 with a profile complementary to that of the shoulder 44 and it is capable of rotation about an axis or of pins 51 so as to pivot counterclockwise when the circuit breaker trips ( Figure 2), and clockwise when resetting the circuit breaker.
  • the lever 50 has a lateral face 53 serving as a stop for the spout 45 of the key 40 when the additive block is rearmed (FIG. 3).
  • the axis 31 of the lever 30 is coupled to a shaft or lever of the circuit breaker so as to deliver to the latter the "go" information for tripping in the case of a tripping additive or to receive the tripping information in the case of a signaling additive, while the axis 51 of the locking lever 50 is coupled to a shaft or to a lever of the circuit breaker which sends the circuit breaker tripping "feedback" information to the additive block .
  • FIG. 4 The corresponding embodiment is illustrated in FIG. 4.
  • An intermediate lever 60 corresponding to the lever 20 of Figure 1 is pivotally mounted about an axis 61 and has an arm 62 whose end 62a cooperates with the trigger pusher 13, a lower arm 63 whose end 63a cooperates in end of release with a main lever 70 and a spoiler 64 provided to cooperate with a spoiler of the main lever.
  • the main lever 70 can pivot around an axis 71 coupled to a shaft or to a lever of the circuit breaker so as to transmit to the latter the information for triggering the additive block by rotation clockwise.
  • the lever 70 has an arm 72 provided with a bearing face 73 intended to cooperate with the end 63a of the intermediate lever 60; it includes on the same arm a hook 74 intended to cooperate with the spoiler 64.
  • a circular slot 75 is provided in the arm 72 to limit the angular travel of the lever 70 in a clockwise direction by abutment of the axis 61 against the bottom of the slot.
  • a torsion spring 76 is supported, on the one hand, on a shoulder 46 of the reset button 40 and, on the other hand, on the arm 72 of the lever 70; the latter finally has an arm 77 carrying an indicator element 78 capable of appearing opposite the window 16 of the housing 11 in the triggered position of the additive block.
  • the additive block In the state of FIG. 1, the additive block is armed; the lever 50 occupies a position indicating that the circuit breaker is tripped and locks the reset button 40.
  • auxiliary control member 12 for example a measurement relay
  • the pusher 13 moves according to the arrow F and makes the intermediate lever pivot in the direction counterclockwise around the axis 21 against the torque determined by the low-effort spring F 1 . Consequently, the spoiler 24 emerges from the hook 32 and the lever 30 pivots counterclockwise around the axis 31 under the effect of the force spring F 2 .
  • the lever 30 transmits to the circuit breaker tripping mechanism a tripping order via the rotary axis 31 and that the tripping indicator 34 becomes visible through the window 16 of the housing 11 of the additive block (FIG. 2).
  • the circuit breaker tripping mechanism opens the separable contacts of the latter and in turn rotates the cam lever 50 counterclockwise, to bring it to the position in FIG. 2, with the result of unlocking the reset key 40.
  • the ramp 33 of the lever 30 is applied against the end 23a of the arm 23 and makes it turn clockwise in order to return the pusher in the opposite direction to the arrow F; this makes it possible to reset the relay 12, for example to avoid leaving its magnetic circuit open when it is a relay polarized by permanent magnet.
  • the user is required to reset the add-on block as a priority because otherwise the axis 31 remains in the position of FIG. 2.
  • the rearming of the add-on block is carried out as shown in FIG. 3 by manual tilting of the key 40 around its axis 41.
  • the boss 43 is applied to the lever 30 and drives it clockwise until the spoiler 24 slides. of the intermediate lever on the hook 32 and catch of the spoiler in the hook, while the indicator 34 disappears from the window 16.
  • the cam lever 50 can be returned to its handle locking position in response to resetting of the circuit breaker by the user.
  • the add-on block 10 performs the function of detecting a residual differential current - by means of the measurement relay 12 with push-button 13 - and the tripping function of the circuit breaker following this detection.
  • the block comprises for this purpose a test pusher 80 provided with a stop element 81 applicable against a shoulder 18 of the housing 11 under the effect of a spring.
  • a lever 82 has, on either side of a fulcrum 83, a first arm 84 has the support on the pusher 80 and a second arm 85 in support 2 on a projection 47 of the key 40.
  • the ends 84a, 85a of the arms 84, 85 can slide in slides 86, 87 of appropriate radius of curvature, substantially equal to the distance "d" between the ends 84a, 85a.
  • a torsion spring 88 wound on an axis 89 comprises on one side of the axis a first arm 90 applied at a lower fulcrum 35 of the lever 30 and a second arm 91 applied on the fulcrum 83 of the lever 82.
  • the spring 88 exerts forces F ' 2 and F' 1 respectively at 35 and 83, the force F ' 1 breaking down into two forces F 3 , F 4 stressing respectively the reset button 40 and the test push-button 80 .
  • the projection 47 of the key 40 descends during the pivoting of the key around its axis 41.
  • the projection 47 causes a downward displacement of the fulcrum at 2 in the slide 87 and, because the fulcrum has l remains fixed by abutment of the element 81 of the pusher 80 against the shoulder 18, causes a slight pivoting of the lever 82 around a counterclockwise; this movement of the lever 82 takes place against the force F ′ 1 of the torsion spring 88 of which it is found that one of the functions is to produce the recall of the key.
  • test pusher 80 causes the fulcrum a 1 to descend into the slide 86 and the lever 82 to tilt around the fulcrum a 2 which remains applied against the projection 47 of the key 40 as a result of the bearing of the stop 42 against the shoulder 17 of the housing.
  • the levers 20, 30, 40 and 50 can be arranged in a half-box and the pusher 80, the lever 82 and the spring 88 housed in an adjacent half-box, the two half-boxes constituting the additive block.
  • the add-on block no longer communicates a trip order to the circuit breaker, but receives the trip information therefrom. Therefore, this information is signaled, for example on the add-on block and the reset of the circuit breaker is overloaded to manual reset of the additive block.
  • the housing 10 of the add-on block comprises the key 40 and the interlocking lever 50 already described, as well as an auxiliary signaling assembly 100, an intermediate lever 110 and a receiving lever 120 coupled to the circuit breaker.
  • the signaling assembly 100 comprises a pusher 101 urged upward (FIG. 6) by a spring 102 and carrying two arms 103, 104 contact carrier 105, 106 subject to return means and movable along the axis of the pusher.
  • the contacts 105, 106 are arranged respectively on conductors 107, 108.
  • the intermediate lever 110 is pivotally mounted on an axis 111, as previously the lever 20 on its axis 21, and it has an arm 112 with a spoiler 113 and a guide member 114 such as a ramp, slide, fork or another similar element.
  • the member 114 is surmounted by a bearing face 115 intended to cooperate with the boss 43 of the key 40.
  • the receiving lever 120 is mounted on an axis 121 and includes a hook 122 which cooperates with the spoiler 113, a finger 123 which cooperates with the guide fork 114 and an indicator element 124 capable of appearing opposite the window 16 of the housing. 11.
  • the axis 121 of the lever 120 is coupled to a shaft or lever of the circuit breaker so as to turn when the latter trips to, on the one hand, make the indicator 124 visible through the window 16 and, on the other hand hand, activate the contacts.
  • the add-on block is illustrated in its armed position corresponding to the on state of the circuit breaker.
  • the intermediate lever 110 is packaged on the lever 120 and it is subjected to a holding force F 6 produced by the reaction of the springs of the auxiliary contact assembly 100.
  • the contacts 105 are open and the contacts 106 are closed, while indicator 124 is cleared.
  • the cam lever 50 also coupled to the circuit breaker is brought by the connecting shaft thereof in the position illustrated in Figure 7 so as to unlock the reset button.
  • FIG. 9 An example of coupling an additive block BA 1 according to FIGS. 1 to 5 to a three-pole circuit breaker D 1 has been shown in FIG. 9, while an example of coupling of additive block BA 2 according to FIGS. 6 to 8 to a bipolar circuit breaker D 2 has been illustrated in FIG. 10.
  • the direction of transmission of trip information between the add-on block and the circuit breaker has been indicated in both cases by arrows.
  • a locking member of the reset lever, sealable or padlockable if necessary, may be provided to prohibit the reset action of the additive block to an unauthorized person and / or to serve as a circuit breaker locking device; this locking member can be constituted by a drawer, a needle, a dowel or any other similar member.
  • the additive block is a trigger block with lack of voltage or with emission

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  • Breakers (AREA)
  • Switch Cases, Indication, And Locking (AREA)
EP85400258A 1984-03-26 1985-02-14 An einen Schutzschalter ankuppelbare Zusatzeinheit Expired EP0161946B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8404636 1984-03-26
FR8404636A FR2561819B1 (fr) 1984-03-26 1984-03-26 Bloc additif accouplable a un disjoncteur

Publications (2)

Publication Number Publication Date
EP0161946A1 true EP0161946A1 (de) 1985-11-21
EP0161946B1 EP0161946B1 (de) 1988-05-18

Family

ID=9302442

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85400258A Expired EP0161946B1 (de) 1984-03-26 1985-02-14 An einen Schutzschalter ankuppelbare Zusatzeinheit

Country Status (5)

Country Link
US (1) US4635013A (de)
EP (1) EP0161946B1 (de)
JP (1) JPS60218727A (de)
DE (1) DE3562841D1 (de)
FR (1) FR2561819B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3643511A1 (de) * 1986-12-19 1988-06-30 Felten & Guilleaume Energie Mechanismus fuer einen mit einem leitungsschutzschalter kombinierten fehlerstromschutzschalter
FR2644009A1 (fr) * 1988-09-06 1990-09-07 Gen Electric Disjoncteur en boitier moule, dispositif de commande du declenchement; ensemble auxiliaire pour ce disjoncteur
EP0399283A2 (de) * 1989-05-25 1990-11-28 Bticino S.P.A. Betätigungsvorrichtung für Notsteuerung
EP1209711A1 (de) * 2000-11-21 2002-05-29 ABB Research Ltd. Hilfseinrichtung
EP4199020A1 (de) * 2021-12-17 2023-06-21 Schneider Electric Industries Sas Schutzeinheit für steuer- und bedieneinheiten eines schaltschranks

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH681752A5 (de) * 1991-02-22 1993-05-14 Weber Ag
FR2688341B1 (fr) * 1992-03-05 1994-05-20 Telemecanique Disjoncteur a boutons de commande pivotants.
GB2297649B (en) * 1995-02-01 1999-07-07 Gen Electric Mechanically actuated indicator for a pushbutton switch
US6080947A (en) * 1998-05-07 2000-06-27 Eaton Corporation Electrical switching apparatus with operating condition indicators mounted in face plate
ES1043678Y (es) * 1999-07-14 2000-06-16 Bitron Ind Espana Sa Mecanismo interruptor electromagnetico con rearme manual.
US7474194B2 (en) * 2004-09-13 2009-01-06 Cooper Technologies Company Fusible switching disconnect modules and devices
KR100876535B1 (ko) * 2007-08-20 2008-12-31 엘에스산전 주식회사 차단기의 보조접점장치
US8188396B2 (en) * 2009-01-21 2012-05-29 General Electric Company SCADA ready field test switch
DE102009016736B4 (de) * 2009-04-09 2012-02-09 Abb Ag Auslöseeinheit zum Anbau an ein Installationsgerät sowie Anordnung bestehend aus einem Installationsgerät und einer daran angereihten Auslöseeinheit
DE102011077285A1 (de) * 2011-06-09 2012-12-13 Siemens Aktiengesellschaft Hilfsschalter für einen elektrischen Schalter

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH415809A (fr) * 1966-01-13 1966-06-30 Gardy Particip App Disjoncteur à surintensité et à action différentielle
FR2132129A1 (de) * 1971-03-29 1972-11-17 Bbc Brown Boveri & Cie
US4037185A (en) * 1976-03-11 1977-07-19 General Electric Company Ground fault circuit breaker with trip indication

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3973230A (en) * 1974-04-25 1976-08-03 General Electric Company Circuit breaker accessories incorporating improved auxiliary switch
US4301342A (en) * 1980-06-23 1981-11-17 General Electric Company Circuit breaker condition indicator apparatus

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH415809A (fr) * 1966-01-13 1966-06-30 Gardy Particip App Disjoncteur à surintensité et à action différentielle
CH428907A (fr) * 1966-01-13 1967-01-31 Gardy Particip App Disjoncteur à surintensité
FR2132129A1 (de) * 1971-03-29 1972-11-17 Bbc Brown Boveri & Cie
US4037185A (en) * 1976-03-11 1977-07-19 General Electric Company Ground fault circuit breaker with trip indication

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3643511A1 (de) * 1986-12-19 1988-06-30 Felten & Guilleaume Energie Mechanismus fuer einen mit einem leitungsschutzschalter kombinierten fehlerstromschutzschalter
FR2644009A1 (fr) * 1988-09-06 1990-09-07 Gen Electric Disjoncteur en boitier moule, dispositif de commande du declenchement; ensemble auxiliaire pour ce disjoncteur
EP0399283A2 (de) * 1989-05-25 1990-11-28 Bticino S.P.A. Betätigungsvorrichtung für Notsteuerung
EP0399283A3 (de) * 1989-05-25 1992-03-18 Bticino S.P.A. Betätigungsvorrichtung für Notsteuerung
EP1209711A1 (de) * 2000-11-21 2002-05-29 ABB Research Ltd. Hilfseinrichtung
EP4199020A1 (de) * 2021-12-17 2023-06-21 Schneider Electric Industries Sas Schutzeinheit für steuer- und bedieneinheiten eines schaltschranks
WO2023111239A1 (fr) * 2021-12-17 2023-06-22 Schneider Electric Industries Sas Unité de protection pour des unités de contrôle-commande d'une armoire électrique
FR3131115A1 (fr) * 2021-12-17 2023-06-23 Schneider Electric Industries Sas Unité de protection pour des unités de contrôle-commande d’une armoire électrique

Also Published As

Publication number Publication date
US4635013A (en) 1987-01-06
DE3562841D1 (en) 1988-06-23
JPS60218727A (ja) 1985-11-01
EP0161946B1 (de) 1988-05-18
FR2561819B1 (fr) 1987-10-30
FR2561819A1 (fr) 1985-09-27

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