2P MCCB ZMM1-125

The ZMM1 series molded case circuit breakers (hereinafter referred to as “circuit breakers”) are one of the new-type circuit breakers developed by our company using mature design and manufacturing technologies. With a rated insulation voltage of 800V, they are suitable for circuits with an alternating current of 50Hz, a rated operating voltage of 690V and below (400V for ZMM1-63), and a rated operating current up to 800A, used for infrequent conversion and infrequent starting of motors. The circuit breakers have overload, short-circuit, and undervoltage protection functions, which can protect the circuits and power supply equipment from damage.The photo in the 2P MCCB ZMM1-125 MCCB

Introduction to Molded Case Circuit Breakers (2P MCCB)

Molded Case Circuit Breakers (MCCBs) are core components in low-voltage power distribution systems, primarily used for overload protection, short-circuit protection, and on-off control of electrical circuits.

The rated current of Molded Case Circuit Breakers (MCCBs) typically ranges from 10A to 1600A, while some high-end industrial-grade models can extend this range up to 2500A.

Technical data


Type			ZMM1-63		ZMM1-125		ZMM1-160	ZMM1-250		ZMM1-400		ZMM1-630		ZMM1-800
Plose	P		3	3,4	2,3	3,4	3	2,3,4		3,4		3,4		3,4
Rated current In	A		10, 16,20, 25,32, 40,50, 63		10, 16,20, 25,32, 40,50, 63,80, 100, 125		100,125,140,160	100, 125,140 160,180, 200225, 250		225,250,315,350,400		400,500,630		630,700,800
Rated insulation voltage Ui	V		500		800
Rated impulsewithstand voltage Uimp	V		6000		8000
Rated operation voltage Ue	V		AC400		AC400/690
Breaking capacity class			L	M	L	M	L	L	M	L	M	L	M	L	M
Limit short-circuitbreaking capacity Icu	kA	230V	35	50	35	50	35	35	50	50	75	50	75	-	-
		400V	25	35	25	50	35	35	50	50	65	50	65	75	75
		690V	-	-	8	10	8	8	10	10	20	10	20	-	30
Working short-circuit breaking capacity Ics	kA	230V	18	50	18	50	22	22	50	50	50	50	50	-	-
		400V	18	22	18	25	18	18	25	35	32.5	35	42.5	50	50
		690V	-	-	4	5	4	4	5	5	10	5	10	-	15
Arcing distance	mm		50							100
Operating frequency	Electrical life		3000		3000		3000	3000		2000		2000		2000
	mechanical life		20000		20000		20000	20000		10000		10000		10000