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 Product identification label, with manufacturing date E Blue fault-trip reset button F Opening pushbutton G Closing pushbutton H Terminal blocks for standard accessories I Front cover J Spring charging handle 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 Terminal blocks for optional accessories B Four OF indication contacts (delivered as standard) C MCH gear motor D 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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E Standard SDE1 fault-trip indication contact F Optional SDE2 fault-trip indication contact or RES electrical remote reset G Microswitch |
H MN undervoltage release or MX2 opening voltage release I XF closing voltage release J MX1 opening voltage release K PF ready-to-close contact L VSPO OFF-position locking by keylocks M VCPO OFF-position locking by padlocks |
Fixed Circuit Breaker Terminal Block Description
Terminal block supplied as standard on the
circuit breaker
Terminal block for optional accessories on
the circuit breaker
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.
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Marking |
Description |
Availability |
|---|---|---|
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COM |
Terminal block for the external power supply of the MicroLogic Active control unit |
Standard |
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UC1 |
Zone selective interlocking (ZSI) or MDGF module input |
Standard |
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UC2 |
Neutral external sensor or MDGF module input |
Standard |
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SDE2/RES |
SDE2: additional fault-trip indication contact or RES: electrical remote reset |
Optional |
|
M2C/UC4/ESM |
M2C: not applicable, or UC4: external voltage connector or ESM: not applicable |
Optional |
|
UC3 |
External voltage connector |
Standard on 3P circuit breakers Optional on 4P circuit breakers |
|
SDE1 |
SDE1 fault-trip indication contact |
Standard |
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MN/MX2 |
MN undervoltage release or MX2 opening voltage release |
Optional |
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MX1 |
MX1 opening voltage release |
Optional |
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XF |
XF closing voltage release |
Optional |
|
PF |
PF ready-to-close contact |
Optional |
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MCH |
MCH gear motor |
Optional |
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OF1-OF4 |
4 OF indication contacts |
Standard |