Circuit Breakers for Corner Grounded Systems
Issue:
What is the 1 phase 3 phase rating on the circuit breaker label?
Product Line:
Powerpact, Masterpact
Resolution:
The single phase - three phase rating is specifically for the Grounded B Phase (Corner Grounded Delta) system.
See the below example for a 240 Vac corner grounded system, and ratings for 2p and 3p QD breakers
Notes:
What is the 1 phase 3 phase rating on the circuit breaker label?
Product Line:
Powerpact, Masterpact
Resolution:
The single phase - three phase rating is specifically for the Grounded B Phase (Corner Grounded Delta) system.
See the below example for a 240 Vac corner grounded system, and ratings for 2p and 3p QD breakers
Notes:
- A 2p breaker with the special 1Ø-3Ø marking may be used on a 3Ø 240 Vac system.
- A 480 Vac corner grounded system requires a 3p breaker.
- A 3p breaker may be used on a 240 Vac or 480 Vac corner grounded system without special marking
Released for: Schneider Electric Canada
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