Inspection & Maintenance
4.7 Maintaining the main contact system
3WJ Air Circuit breakers
Operating Instructions, 12/2022, L1V30828903001-01
193
Connecting the contact carriers
• Press the contact carrier towards the coupling clips. Make sure that the contact carrier
fully accommodates the coupling clips.
• Insert the coupling bolt as shown and move it to the left by means of a screwdriver.
• Insert the locking bolt with needle-nose pliers and tighten it.
Functional test
Risk of personal injury
Do not touch the contacts while opening/closing of the circuit breaker.
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