MP240KH 40-Amp Double Pole 22kA Type MP-HT Circuit Breaker Double pole, 40 Amp, type MP-HT Circuit Breaker 22,000 AIC interrupting rating Murray type MP-HT circuit breakers provide easy plug-in connections in Murray enclosures and the time saving insta-wire feature Compatible with Murray rock solid load centers Use for overload and short-circuit protection of your electrical system