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What are the instantaneous override values for Powerpact H, J and L frame breakers.

Product Line:
Powerpact H, J and L with Micrologic trip units

Resolution:
PowerPact H, J, and L-frame circuit breakers with Micrologic trip units have built-in instantaneous override protection. Fault currents below the instantaneous override level will be cleared by the normal Long-time, Short-time, and Instantaneous protection levels that are shown on the trip curves. The built-in instantaneous override protection is calibrated in peak currents to provide protection to the circuit breaker and downstream circuit components. If the current is high enough to activate the instantaneous override, the current will be cleared in 1 cycle or less, shorter with increased current.  
Circuit Breaker Model     Instantaneous Override (kA Peak) +/- 10%
    H-frame 60A                               1.290A
    H-frame 100A                              2.150A
    H-frame 150A                              3.220A
    J-frame 250A                               4.330A
    L-frame 250A                               4.330A
    L-frame 400A                               6.950A
    L-frame 600A                               9.200A
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