JM1 Series MCCB

1. Purpose and Scope of Application

molded case circuit breaker(hereinafter referred to as MCCB)is one of the new types of circuit breakers developed by our company using international advanced design and  manufacturing technology. According to its rated limit short-circuit breaking capacity(LCU), it is divided into four categories:C type(basic type), L type(standard type), M type(higher breaking  type), and H type(high breaking type). This product has the characteristics of small volume, high breaking height, short flying arc, and anti vibration, making it an ideal product for land and ship use. Its rated insulation voltage is 800V(JM1-63 is 500V), suitable for infrequent switching and infrequent motor starting in circuits with AC  50Hz, 690V and  below. The MCCB has overload, short circuit, and under voltage protection devices, which  can protect the circuit and power equipment from damage.

This product can be installed vertically or horizontally.

This product meets the  standards of IEC60947-2  and GB14048. 2.

2. Model   and   meaning

Accessory Name	No accessories	Alarm contact		Separator	Auxiliary contact	Lack of voltage separator		Auxiliary contact of separator		Lack of voltage separator	Two sets of auxiliary contacts	Lack of auxiliary contacts for voltage separator
Separation method for over current	Code	Code		Code	Code	Code		Code		Code	Code	Code
Instantaneous separator	200	208		210	220	230		240		250	260	270
Duplex separator	300	308		310	320	330		340		350	360	370
Accessory Name	Alarm contact for separator		Auxiliary contact Alarm contact		Lack of voltage separator Alarm contact		Separate auxiliary contacts Alarm contact		Lack of voltage separator Alarm contact		Two sets of auxiliary contacts Alarm contact	Auxiliary contact lacking voltage separator Alarm contact
Separation method for over current	Code		Code		Code		Code		Code		Code	Code
Instantaneous separator	218		228		238		248		258		268	278
Duplex separator	318		328		338		348		358		368	378

3. Specifications

Type	Rated Current of over current release（A）
JM1-63	(6),  10,  16,  20,  25,  32,  40,  50,  63
JM1-100	(10),  16,  20,  25,  32,  40,  50,  63,  80,  100
JM1-225	100,  125,  140,  160,  180,  200,  225
JM1-400	225,  250,  315,  350,  400
JM1-630	400,  500,  630
JM1-800	630,  700,  800

Note1: 6A   specification   only   has   electromagnetic (instantaneous) type; () is   not   a   recommended specification

4. Main  technical  parameters 

1. The thermal motion separator of the circuit breaker has anti time limiting characteristics, and

The electromagnetic separation is an instantaneous action. The characteristics are shown in the table(for distribution).

 

Separator Rated current (A)	Thermal motion separator(Ambient temperature+40℃)			Electromagnetic separator Action current(A)
	1. 05ln(Cold state) No action time(h)	1. 30ln(Cold state) No action time(h)	3. 0ln Return characteristic current Returnable time(s)
10≤In≤63	1	1	5	10ln±20%
63<In≤100	2	2	8
100<In≤800	2	2	12	10ln±20%and 5In±20%

2. For protecting electric motors(Ambient temperature 40℃)

Test current name	Current multiplier	Appointed time		Initial state
		10≤In≤225	225<In≤800
Agree not to separate current	1. 0			Cold state
Agreed separation current	1. 2			Hot state
	1. 5	<4min	<8min	Hot state
	7. 2	4s<Tp≤10s	6s<Tp≤20s	Cold state

3. The  operating current of  the electromagnetic separator used to protect the motor is 12In±20%(A)

4. When  the  external  voltage of  the separator is between 70% and 110%of  the  rated  control  power  supply voltage, it can reliably disconnect the circuit breaker.

5. When the power supply voltage drops to within the range of 70% to 35%of  the  rated working voltage of the deficient voltage separator, the deficient voltage separator can reliably disconnect the circuit breaker; 

When  the  power  supply  voltage  is  lower  than  35% of  the  rated  working  voltage  of  the under voltage separator, the under voltage  separator  can prevent the  circuit breaker from closing;When the voltage is higher than  85%of the rated working voltage  of the voltage  separator, the lack of voltage  separator  can ensure the reliable closure of the circuit breaker. 

5. Appearance and installation dimensions

Model	External dimensions											Installation dimensions
	Front panel wiring									Backboard wiring
	W	L	H	W1	L1	H1	H2	H3	L2	H4	H5	A	B	φD
JM1-63L	78	135	74	50	170	90. 5	20	20	117	57	75	25	117	3. 5
JM1-63M	78	135	82	50	170	98. 5	28	28	117	57	75	25	117	3. 5
JM1-100C	92	150	68	60	187	86	24	24	129	63	103	30	129	4. 5
JM1-100L	92	150	68	60	187	86	24	24	129	63	103	30	129	4. 5
JM1-100M	92	150	86	60	187	104	24	24	129	63	103	30	129	4. 5
JM1-100H	92	150	86	60	187	104	24	24	129	63	103	30	129	4. 5
JM1-225C	107	165	86	70	215	110	24	24	144	65	110	35	126	4. 5
JM1-225L	107	165	86	70	215	110	24	24	144	65	110	35	126	4. 5
JM1-225M	107	165	103	70	215	127	24	24	144	65	110	35	126	4. 5
JM1-225H	107	165	103	70	215	127	24	24	144	65	110	35	126	4. 5
JM1-400C	140	257	105	88	357	153	36. 5	36. 5	224	70	120	44	195	7
JM1-400L	140	257	105	88	357	153	36. 5	36. 5	224	70	120	44	195	7
JM1-400M	140	270	105	88	370	153	36. 5	36. 5	234	70	125	44	195	7
JM1-630	182	270	110	116	370	160	43	43	234	61	121	58	200	7
JM1-630C	182	270	110	116	370	160	43	43	234	61	121	58	200	7
JM1-630L	182	270	110	116	370	160	43	43	234	61	121	58	200	7
JM1-630M	210	280	107	140	380	142	33	33	296	96	96	70	243	7
JM1-800M	210	280	107	140	380	142	33	33	296	96	96	70	243	7
JM1-800H	210	280	107	140	380	142	33	33	296	96	96	70	243	7