Inspection & Maintenance
4.7 Maintaining the main contact system
3WJ Air Circuit breakers
186 Operating Instructions, 12/2022, L1V30828903001-01
Removing the internal current transformers
1. Unscrew and remove the screws and washers of the current transformer housing.
2. Remove the current transformer housing.
3. Remove the current transformers from the rear housing of the Circuit breaker.
Removing the contact carriers
• Pull the contact carriers forward.
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