Flame Retardant AC 400V Earth Leakage Circuit Breaker 40A 50A 63A
UKM30L Series Earth Leakage Circuit Breaker is developed with
hi-tech in 1990S with completed protection functions, high
performance, smart dimension which is the ideal replacements for
UKM30L series earth leakage circuit breaker (hereinafter
simple call leakage circuit breaker). It is multi function circuit
breaker which concentrate left current relay ,leakage circuit
breaker and ac contactor on one whole .it was suitable in three
phase 4 wire on low voltage electric net which connect the ground
directly .it can protect the man which touch the power .it can
protect when the circuit and power equipment meet faulty over load
short circuit and owe over voltage and lack phase condition.
|Frame rated current||100||250||400|
|Poles||3 4||3 4||3 4|
|Rated limit short/service breaking capitily Icu/Ics(KA)||50/25||50/25||50/25|
|Rated Actuation residual current||30,100,300, 500mA||30,100,300,500mA||30,100,300,500mA|
|Ratedresidual non-operattion current||1/2In||1/2In||1/2In|
|Rated residual short-circuit making & breaking capacity||1/4Icu||1/4Icu||1/4Icu|
|Operation charateristic (times) ON / OFF||1500 / 8500||1000 / 7000||500 / 4000|
a. Material: good heat resistance,impact resistance,flame
b. Easy to install: tunnel type terminals pressure,easy to
install and convenient.
c. Securely installed: snap removable teh new design is more
flexible use,more tightening.
d. Rapid extinguishing system: interrupter piece with steel
material,copper plating on steel, steel to ensure corrosion
e. Shorted coil: shorted coil using copper manufacturing
f. Leading electrical copper: Uniformly thick galvanized copper,can
achieve excellent thermal performance.
An ELCB is a specialised type of latching relay that has
a building's incoming mains power connected through
its switching contacts so that the ELCB disconnects the
power in an earth leakage (unsafe) condition.
The ELCB detects fault currents from live to the earth
(ground) wire within the installation it protects. If
sufficient voltage appears across the ELCB's sense coil,
it will switch off the power, and remain off until manually
reset. A voltage-sensing ELCB does not sense fault currents from
live to any other earthed body.
Temperature compensating curve:
Power Loss of ELCB: