FA90779
20 April 2022
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
