What does LSIG signify on Micrologic trip units?

Issue:
What are the LSIG trip unit functions on a Micrologic trip unit?

Product Line:
Circuit Breakers

Resolution:
The letters LSIG signify the type of protection and available adjustments on certain trip units.

• L = Long Time (overload protection, analygous to the inverse-time thermal trip of a thermal/magnetic breaker)
• S = Short Time (short circuit protection of low level faults)
• I = Instantaneous (short current protection of high level faults, analagous to the instantaneous magnetic trip of a thermal/magnetic breaker)
• G = Ground Fault (equipment ground fault protection)

Therefore, LSIG = Long-time + Short-time + Instantaneous + Equipment Ground-fault Protection

Released for:Schneider Electric USA