MCCB 125A 3 Pole

Introduction:

The molded case circuit breakers manufactured by CNTN Electric feature a maximum rated insulation voltage of 800V. The ZMM1-63 model is suitable for 400V circuits, while other models are applicable to 50Hz AC systems rated at 690V or below, covering current ratings ranging from 63A to 800A; they are suitable for the occasional starting, stopping, and switching operations of electric motors.
The CNTN molded-case circuit breaker features comprehensive multi-level safety protection—including overload, short-circuit, and undervoltage safeguards—to fully secure the operational safety of circuits and electrical equipment, effectively mitigating the losses and hazards associated with electrical faults.
This series of circuit breakers features excellent short-circuit breaking performance and rapid arc extinction, effectively ensuring the operational stability of the system; it is the preferred choice for power distribution applications.
The MCCB 125A 3-Pole molded case circuit breakers manufactured by CNTN Electric feature housings constructed from highly flame-retardant materials, ensuring effective arc isolation while providing protection against dust, moisture, and electric shock. These products can be directly installed in distribution cabinets and outdoor distribution boxes, preventing accidental contact with live components and ensuring electrical safety.
The CNTN MCCB offers diverse and flexible installation options—supporting fixed, plug-in, and withdrawable configurations—and accommodates both horizontal and vertical mounting orientations. This adaptability ensures compatibility with a wide variety of cabinet spaces, making wiring and installation significantly more convenient.
CNTN Electric can not only produce MCCB 125A 4-pole circuit breakers but also 125A 2-pole and 125A 3-pole versions according to customer requirements.
Our MCCB is suitable for three-phase four-wire circuits, and can also be used for three-phase three-wire and three-phase two-wire circuits.
CNTN Electric not only manufactures MCCB125A 3-pole circuit breakers in AC types, but also produces DC molded case circuit breakers.
CNTN Electric offers molded-case circuit breakers with a diverse range of aesthetic configurations. In addition to the classic model featuring a white arc shield made of Bakelite, versions with gray and black plastic arc shields are also available, catering to the varied requirements of different settings and aesthetic preferences.
Would you like to know the price of our MCCB 125A 3 Pole? Please contact us for more details now!

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

Codes for release devices and accessories

ZMM1-125 (L, M) front panel wiring (2-pole, 3-pole, 4-pole) (X-X, Y-Y are the centers of the 3-pole circuit breaker) ZMM1-125 (L, M, H) Plug-in Front Panel Wiring (3-pole) (X-X, Y-Y are the centers of the 3-pole circuit breaker)