ZYM1 Molded Case Circuit Breaker Manufacturer

ZYM1 Molded case circuit breaker

ZYM1 series plastic shell circuit breaker (hereinafter referred to as circuit breaker) is one of the new circuit breakers produced by our company using advanced design and manufacturing technology.

Description

Product representative image

Scope of Application

ZYM1 series plastic shell circuit breaker (hereinafter referred to as circuit breaker) is one of the new circuit breakers produced by our company using

advanced design and manufacturing technology. Its rated insulation voltage is 800V,(ZYM1-63 is 500V), suitable for AC 50Hz, rated working voltage

690V and below,(ZYM1-63 is 400V), rated working current to 1250A circuit for infrequent conversion and motor infrequent start. The circuit breaker

has overload short circuit and undervoltage protection device, which can protect the line and power equipment from damage.

According to its rated limit short-circuit breaking capacity (cu), the circuit breaker is divided into L type (standard type)M type (high score type) H type

(high score type) three categories. The circuit breaker has the characteristics of small volume, short fly-off arc, short fly-off arc (some specifications

are zero fly-off arc) anti-vibration, and is an ideal product for land and ship use.

The circuit breaker can be installed vertically (both vertical installation), can also be installed horizontally (both horizontal installation).

This circuit breaker product implements the following standards:

◎IEC60947-1 and GB/T14048.1 General Rules

◎IEC60947-2 and GB/T14082 low voltage circuit breaker

◎IEC60497-4 and GB/T14048.4 contactors and motor starters

◎IEC60947-5.1 and GB/T14048.5 electromechanical control circuit appliances

Application Scenarios

ZYM1 Series Molded Case Circuit Breakers (MCCB) are designed for power distribution and motor protection in low-voltage electrical systems. They provide reliable overload, short-circuit and undervoltage protection, ensuring the safe operation of electrical equipment and power networks.

Typical application scenarios include:

Industrial Power Distribution

Used in factories, workshops, manufacturing plants, and industrial automation systems to protect distribution circuits and electrical equipment.

Commercial Buildings

Suitable for office buildings, shopping malls, hotels, hospitals, airports, and other commercial facilities requiring stable and reliable power distribution.

Residential Distribution Systems

Installed in residential buildings, apartment complexes, and community power distribution networks for feeder and branch circuit protection.

Infrastructure Projects

Widely used in rail transit, telecommunications stations, water treatment plants, and municipal engineering projects.

Renewable Energy Systems

Applicable to photovoltaic power generation systems, energy storage systems, and other new energy applications requiring dependable circuit protection.

Marine and Offshore Applications

The compact structure and high breaking capacity make the circuit breaker suitable for shipbuilding, offshore platforms, and marine electrical systems.

Normal working conditions

Altitude 2000m and below;

The temperature of the surrounding medium is not higher than +40℃(+45℃ for Marine products) and not lower than -5℃;

Resistant to humid air;

Resistant to salt spray and oil spray;

Resistant to mold

Maximum inclination is ±22.5°;

Can work reliably under earthquake conditions (4g);

Where there is no rain or snow.

In the medium without explosion danger, and the medium is not enough to corrode the metal and destroy the insulation of the gas and conductive dust;

Reliable operation under normal vibration of the ship;

Structural features

Compact and Modular Design

The breaker adopts a compact molded case structure, saving installation space while ensuring high mechanical strength and insulation performance.

High Breaking Capacity

Available in standard breaking type (L), high breaking type (M), and extra-high breaking type (H) to meet different fault current requirements.

Reliable Protection Functions

Integrated thermal-magnetic trip unit provides:

Overload protection

Short-circuit protection

Undervoltage protection (optional)

Isolation function

Excellent Arc Extinguishing System

Advanced arc extinguishing chamber design enables rapid arc interruption and improves operational safety.

Flexible Installation

Supports:Vertical installation and Horizontal installation

allowing easy integration into various switchboards and distribution panels.

Multiple Accessories Available

Can be equipped with:Auxiliary contacts, Alarm contacts, Shunt release, Undervoltage release, Motor operating mechanism, Rotary handle operating mechanism

Durable Housing Material

High-quality flame-retardant engineering plastic housing provides:

High dielectric strength

Heat resistance

Impact resistance

Long service life

Product Model and Its Meaning
ZYM1 Molded case circuit breaker

Technical Parameters

Model		ZYM1-63			ZYM1-125			ZYM1-250			ZYM1-400				ZYM1-630				ZYM1-800				ZYM1-1250
Shellgrade		63			125			250			400				630				800				1250
Rated curent In(A)		6/10/16 20/25/32 40/50/63			16/20/25 32/40/50/63 80/100/125			100/125/140 160/180/200 225/250			225/250 315/350/400				400/500/630				630/700/800				800/1000/1250
Rated operating voltage Ue(V)		AC400/690			AC400/690			AC400/690			AC400/690				AC400/690				AC400/690				AC400/690
Rated insulation voltage Ui(M)
Number ofpoles
Rated limit short-circuit breaking capacitylevel		L	M	H	L	M	H	L	M	H	L	M		H	L	M		H	M		H		M	H
Rated limit short-ci- cuit breaking capacity lau(KA)	AC690V					30	30		30	30		30		30		30		30	30		30
	AC400V	30	50	85	30	65	85	35	65	85	50	65		100	65	75		100	65		75		65	65
Rated operating short- circuit breaking capacity IcsSKA)	AC690V					15	15		15	15		15		15		20		20	20		20
	AC400V	18	35	65	15	40	65	22	40	65	35	50		65	42	50		65	65		65		65	65
Operating pefomance (sub)	electiy	4500			3000			2500			1500				1500				1000				500
	No electicity	8500			7000			6500			4000				4000				2500				2500
	L	136			150			165			257				270				280				330
	W	77	77/103		92	92/122		106	142		149		198		182		240		210	280		210	210
	H	74	82		71	89		88	106		105				107				106				137
Arcing distance (mm)		≤50			≤50			≤50			≤50				≤50				≤100				≤100

Note: ① Test parameters at *400V; ②6A No thermal trip; ③63H-800H(except 800H/4P) can be made as a sub-zero ice arc circuit breaker; ④100s,

H and 225S, H can be equipped with cage terminals

External appearance and installation dimensions
ZYM1 Molded case circuit breaker

Model		ZYM1-63L	ZYM1-63M	ZYM1-125L	ZYM1-125M ZYM1-125H	ZYM1-250L	ZYM1-250M ZYM1-250H
Outline d imension	C	85	85	87	87	102	102
	E	48	48	49	49	50	50
	F	22	22	22	22	22	22
	G	15	15	18	18	24	24
	G1	6.5	6.5	7.5	7.5	11.5	11.5
	H	74	82	71	89	88	106
	H1	90	100	84	105	108	125
	H2	19	27	24	23	24	24
	H3	4	4	4	4	4	4
	H4	8	8	8	8	6	6
	L	136	136	150	150	165	165
	L1	233	235	255	255	292	292
	L2	117	117	130	130	144	144
	W	77	77	92	92	106	106
	W1	25	25	30	30	35	35
	W2	103	103	122	122	142	142
	W3	-	-		65	-	74.5
Mounting dimension	A	25	25	30	30	35	35
	B	115	115	130.5	130.5	126	126
	Φd	3.5	3.5	4.5	4.5	5	5

Model		ZYM1-400L/3P ZYM1-400M/3P ZYM1-400H/3P	ZYM1-400L/4P ZYM1-400M/4P ZYM1-400H/4P	ZYM1-630L/3P ZYM1-630M/3P ZYM1-630H/3P	ZYM1-630L/4P ZYM1-630M/4P ZYM1-630H/4P	ZYM1-800L/3P ZYM1-800M/3P	ZYM1-800L/4P
Outline dimension	C	127.5	127.5	134	134	136	136
	C1	173.5	173.5	184.5	184.5	204	204
	E	90	90	89	89	82	82
	F	65	65	65.5	65	66	66
	φG	30.5	30.5	44	44	45	45
	G1	11	11	13.5	15.5	12.5	12
	H	105	105	107	107	106	106
	H1	155	155	164.5	164.5	155	155
	H2	38	38	40	41	44	42
	H3	6	6	6.5	6.4	4.5	4.5
	H4	5.5	5	6.5	3.5	5	5
	H5	5	4.5	4.5	4.5	8	8
	L	257	257	270	270	280	280
	L1	457	457	470	470	470	485
	L2	224	224	234	234	243	243
	W	149	一	182	一	210	一
	W1	48	48	58	58	70	70
	W2		198	一	240		280
	A	44	44	58	58	70	70
Mounting dimension	A1	-	50	一	58	-	-
	B	194	194	200	200	243	243
	Φd	7	7	7	7	7	7
	C	127.5	127.5	134	134	136	136