Q340 40-Amp Three Pole Type QP Circuit Breaker Three pole, 40 Amp, 240V type QP Circuit Breaker 10,000 AIC interrupting rating Siemens type QP circuit breakers provide easy plug-in connections in Siemens enclosures and the time saving insta-wire feature Compatible with Siemens PL and ES series load centers Use for overload and short-circuit protection of your electrical system