Thermal circuit breaker STM6E series

ground faultover-currentAC

Product overview STM6E and STM6EL series electronic circuit breakers are applicable for low-voltage power systems of AC 50Hz, rated operating voltage up to 1000V and rated operating current from 16A to 800A. Features ◆Circuit breaker can be equipped with undervoltage release, shunt release, auxiliary contacts, alarm contacts, electric operating mechanism, rotary operating handle and other accessories. ◆Circuit breaker has protection functions of overload long delay, short-circuit short delay and short-circuit instantaneous protection, the user can set the required protection characteristics (user only needs to operate the DIP switch for settings of protection function parameters). ◆Circuit breaker has ground fault and thermal analog protection functions, pre-alarm indication over-current indication, load current indication, digital current analysis technology, and it can achieve a higher level of protection. ◆STM6EL series is circuit breaker with residual current protection function. Tripping test port (TEST)： 1Tripping test input DC12V(+) 2 Tripping test input DC12V(-) Panel adjustment knob as follows in turn: IR(A) Isd(x IR) Ii(x IR) ◆IR: Overload long delay tripping setting current; Isd: ◆Short-circuit short delay tripping setting current; ◆Ii: Short-circuit instantaneous tripping setting current; The rest parameters are set by factory default, or set by remote communication, as follows: ◆tR: Overload long delay setting time, factory default: 60s; ◆tsd: Short-circuit short delay setting time, factory default: 0.1s; ◆Ip: Overload pre-alarm setting current, factory default: 0.85*IR;