Moulded Case Circuit Breaker (Thermal Magnetic Adjustable)

Characteristics of Moulded Case Circuit Breaker (Thermal Magnetic Adjustable)
1. ZLM30T/A and ZLM30RT moulded case circuit breaker (thermal magnetic adjustable) is usually used in low-voltage grid with AC 50Hz, rated operating voltage up to 690V, rated operating current up to 800A.
2. Our ZLM30RT-400 moulded case circuit breaker (thermal magnetic adjustable) can be designed with many accessories, such as under-voltage trip, shunt trip, auxiliary switch, alarm switch, motor operator and rotary handle, among others.
3. Our moulded case circuit breaker (thermal magnetic adjustable) can offer overload protection and instantaneous protection, through adjusting the operating value of overload current and instantaneous current. The adjustable scope for overload protection in thermal magnetic adjustable breaker is 0.8-1.0In and the adjusting scope for instant protection in distribution type breaker is 6-10In.

Specification of Moulded Case Circuit Breaker (Thermal Magnetic Adjustable) ZLM30RT-400

Frame (A)		400
Type		ZLM30T/A, RT-400S		ZLM30T/A, RT-400H
Rated current In (A)		200-250,250-320,320-400		200-250,250-320,320-400
Number of poles		3	4	3	4
Rated voltage Ue (V)		AC400V
Rated insulation voltage Ui (V)		AC690V
Short-circuit Interrupting Capacity Icu/1cs	AC400V	50/35		70/70
Operation life (cycle)	ON	2000
	OFF	4000
Dimensions (mm)	a	140	185	140	185
	b	257		257
	c	103		103
	ca	155		155
Weight (kg)		5.7	7.5	5.7	7.5
Electrical-operation device (MD)		●		●
External rotary handle		●		●
Automatic tripping device		Thermal-magnetic		Thermal-magnetic