Fixed Circuit Breaker
Fixed Circuit Breaker Description
The following image shows the standard version of the fixed circuit breaker (no optional accessories).
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A Mounting side plate B Carrying grip C Arc chute D Blue fault-trip reset button E Product identification label, with manufacturing date F Opening pushbutton G Closing pushbutton H Spring charging handle I Terminal blocks for standard accessories J Front cover K VBP pushbutton locking cover (optional) L Rating plate M Spring charged and ready-to-close indicator N Main-contact position indicator O Window to read the (optional) CDM mechanical operation counter P Control unit Q Control unit transparent cover |
Fixed Circuit Breaker Accessories Description
The following image shows the accessories available for the fixed circuit breaker.
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A Additional support brackets for mounting on a backplate BTerminal blocks for optional accessories C Terminal blocks for optional accessories D Four OF indication contacts (optional) E Four OF indication contacts (delivered as standard) F KMT grounding kit G MCH gear motor H CDM mechanical operation counter Z1, Z2 See following images |
The following images zoom in on the accessories for the fixed circuit breaker:
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I Standard SDE1 fault-trip indication contact J Optional SDE2 fault-trip indication contact or RES electrical remote reset K Microswitch L MN undervoltage release or MX2 opening voltage release |
M MX1 opening voltage release N PF ready-to-close contact O XF closing voltage release P VCPO OFF-position locking by padlocks Q VSPO OFF-position locking by keylocks |
Fixed Circuit Breaker Terminal Block Description
Assignment of Terminal Blocks
 DANGER |
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HAZARD OF ELECTROCUTION FOR VOLTAGES ABOVE 480 VAC
If a voltage greater than 480 Vac is connected to a terminal,
it is forbidden to connect adjacent terminals to a 24 Vdc SELV (Safety
Extra Low Voltage) power supply in order to observe the insulation
distances. For example, if you connect a 690 Vac supply to the UC4
terminal block, you must not connect a 24 Vdc SELV supply to the SDE2
terminal block.
Failure to follow these instructions will result in death or serious injury.
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The following table describes the assignment and the availability of the terminal blocks for fixed circuit breakers:
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Standard terminal blocks and the associated accessories are delivered with the circuit breaker.
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Optional terminal blocks are delivered with the circuit breaker only if the associated optional accessories are installed in the circuit breaker.
|
Block |
Marking |
Description |
Availability |
|---|---|---|---|
|
A |
COM |
Terminal block for the external power supply of the MicroLogic Active control unit |
Standard |
|
UC1 |
Zone selective interlocking (ZSI) or MDGF module input |
Standard |
|
|
UC2 |
Neutral external sensor or MDGF module input |
Standard |
|
|
SDE2/RES |
SDE2: additional fault-trip indication contact or RES: electrical remote reset |
Optional |
|
|
UC4 |
External voltage connector |
Optional |
|
|
UC3 |
External voltage connector |
Standard on 3P circuit breakers Optional on 4P circuit breakers |
|
|
M2C/ESM |
M2C or ESM: not applicable |
Optional |
|
|
SDE1 |
Fault-trip indication contact |
Standard |
|
|
B |
MN/MX2 |
MN undervoltage release or MX2 opening voltage release |
Standard |
|
MX1 |
MX1 opening voltage release |
Optional |
|
|
XF |
XF closing voltage release |
Optional |
|
|
PF |
PF ready-to-close contact |
Optional |
|
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MCH |
MCH gear motor |
Optional |
|
|
C |
OF21–OF24 |
4 OF indication contacts |
Optional |
|
OF11–OF14 |
4 OF indication contacts |
Optional |
|
|
OF1–OF4 |
4 OF indication contacts |
Standard |