Temperatures classification:T1-T4 1. Apply to 50Hz380V,13~125KW 3-Phase asynchro-nous motor's infrequently start and stop;2. Al-alloy diecasted or steelplate welded shell with plastic-sprayed surface;3. Inside mounted breaker, AC contactor, thermal-relay, time relay, changeover switch and indicator, etc;4. Delay automatic time-control relay can be set within0.4~60 seconds;5. Apply to 8 hours work ...