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Circuit breaker connections

Question asked by bayardo.galan on Jun 16, 2017
Latest reply on Jun 27, 2017 by paul.abernathy


In a recent thermal inspection to SQuareD Panel 3 Ph for offices load, I noted the difference temperature operation between 1ph circuit breakers pressure plate type connections and circuit breakers bolted type connections. In my experience the use of pressure plate type breakers is unsecure in SQuareD Panel. Sometime, when you open the electrical panel for maintenance, the breakers lost the connections to the bus and also, the type rise the temperature operation. NEC might restrict the uses of unsecure type connections for circuit’s breakers, as  SquareD Qo breakers.