Non-interchangeable trip. 120 volt AC; 10,000 AIR. Will replace American Switch, Westinghouse Type BR, Bryant, Challenger, Sylvania, Crouse-Hinds, Murray, Frank Adams, General Electric (Full size only), General Switch, I-TE, Gould, Montgomery Ward and Sears. UL Listed, HACR rated. 15 and 20 amp UL Listed for frequent switching applications, 120 volt AC fluorescent lighting.  1" per pole.