Circuit Breaker Trip
Circuit Breaker Trip
(OP)
Opinions needed: What does this mean to you?
MCC Incomming Line Disconnect
Circuit Breaker
Frame - 800A MC
Trip - Non-Auto
The first three lines are obvious. What is the reference to Non-Auto (Trip). I was told it was a thermal-magnetic breaker, without the overload ("thermal"). It would operate for a fault only then I suppose. Thoughts?
MCC Incomming Line Disconnect
Circuit Breaker
Frame - 800A MC
Trip - Non-Auto
The first three lines are obvious. What is the reference to Non-Auto (Trip). I was told it was a thermal-magnetic breaker, without the overload ("thermal"). It would operate for a fault only then I suppose. Thoughts?






RE: Circuit Breaker Trip
RE: Circuit Breaker Trip
I have heard of some which have a high instantaneous element for tripping purposes, but you probably want to check the manufacturer's label. If it says "switch", then forget about expecting it to trip by itself for anything.
Some frames may have provision for installing and externally-operated shunt trip device.
old field guy
RE: Circuit Breaker Trip
You should assume it will never trip for any kind of fault. It cannot provide any overcurrent protection.
RE: Circuit Breaker Trip
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