Issue:
Phase currents on a W frame NW breaker are off by a factor of two
Product Line:
Circuit Breakers
Resolution:
A W frame, Masterpact NW breaker with a Y frame sensor plug will read 2x the actual phase current.
A Y frame, Masterpact NW breaker with a W frame sensor plug will read 1/2 the actual phase current.
Solution is to replace the incorrect sensor plug with the correct one.
Phase currents on a W frame NW breaker are off by a factor of two
Product Line:
Circuit Breakers
Resolution:
A W frame, Masterpact NW breaker with a Y frame sensor plug will read 2x the actual phase current.
A Y frame, Masterpact NW breaker with a W frame sensor plug will read 1/2 the actual phase current.
Solution is to replace the incorrect sensor plug with the correct one.
| Y Frame Sensor Plugs | |
| Amps | Cat Number |
| 2000 | S47821 |
| 2500 | S47822 |
| 3000 | S48826 |
| 3200 | S47823 |
| 4000 | S47824 |
| W Frame Sensor Plugs | |
| Amps | Cat Number |
| 2000 | S33982 |
| 2500 | S33983 |
| 3000 | S48825 |
| 3200 | S33984 |
| 4000 | S47820 |
Released for: Schneider Electric USA
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