Issue:
Response time of the shunt trip and shunt close for the Masterpact NW and NT

Product Line:
Insulated Case Circuit Breakers

Environment:
Masterpact NT and NW

Resolution:
OPEN:

• Circuit Breaker OPEN time at nominal voltage is: 50 ms ±10 ms (40ms to 60 ms).
• Shunt trip (MX) and shunt close (XF) circuits must be energized for minimum of 200 ms.

CLOSE:

• Circuit breaker CLOSE time:at nominal voltage is:
• NW 4000 A and smaller: 70 ms ±10
• NW > 4000 A: 80 ms ±10
• 55 ms for the Masterpact NT

Released for:Schneider Electric USA