SRMM1(CM1) series molded case circuit breakerDetailed product description：

SRMM1 (CM1) series plastic shell circuit breakers (hereinafter referred to as circuit breakers) are suitable for use in distribution networks with AC 50Hz (or 60Hz), rated insulation voltage of 690V, rated working voltage of 690V and below, and rated current of 630A and below as overload, undervoltage, and short circuit protection for distribution power and protection lines and power equipment. Circuit breakers with 400A shell level and below can also be used as overload, undervoltage, and short circuit protection for electric motors. Under normal circumstances, it can be used for infrequent switching of circuits and infrequent starting of motors.
This product complies with the GB14048.2 standard.

Attachment Name

Without attachments

Alarm contact

shunt release

auxiliary contact

Undervoltage release device

Auxiliary contact of shunt release device

Under voltage release of shunt release device

Two sets of auxiliary contacts

Auxiliary contact undervoltage release device

Alarm contact of shunt release device

Auxiliary Head Alarm contact

Under voltage release alarm contact

Auxiliary contact alarm contact of shunt release device

Under voltage release alarm contact of shunt release

Group Two Auxiliary contact alarm contact

Auxiliary contact undervoltage release alarm contact

Release mechanism

Electromagnetic type

two hundred

two hundred and eight

two hundred and ten

two hundred and twenty

two hundred and thirty

two hundred and forty

two hundred and fifty

two hundred and sixty

two hundred and seventy

two hundred and eighteen

two hundred and twenty-eight

two hundred and thirty-eight

two hundred and forty-eight

two hundred and fifty-eight

two hundred and sixty-eight

two hundred and seventy-eight

duplex

three hundred

three hundred and eight

three hundred and ten

three hundred and twenty

three hundred and thirty

three hundred and forty

three hundred and fifty

three hundred and sixty

three hundred and seventy

three hundred and eighteen

three hundred and twenty-eight

three hundred and thirty-eight

three hundred and forty-eight

three hundred and fifty-eight

three hundred and sixty-eight

three hundred and seventy-eight

Main technical parameters of SRMM1 (CM1) series molded case circuit breaker

Rated control power supply voltage (Us) and rated operating voltage of circuit breaker overcurrent release and electric mechanism

category		Rated working voltage V
		A.C.50HZ		D.C.
trip unit	shunt release	Us	230 (220), 400 (380)	110, 220
	Undervoltage release device	Ue	230 (220), 400 (380)	-
electric mechanism		Us	230 (220), 400 (380)	110, 220

Main parameters of circuit breaker

model	Frame rating Maximum rated current A	Rated current In A	Short circuit breaking capacity kA (effective value)				Flying arc distance mm
			Ics/cosφ		Icu/cosφ
			400V	690V	400V	690V
WM1-63L	sixty-three	6 10 16 20 32 40 50 63	12.5/0.3	-	25/0.25	-	fifty
WM1-63M			25/0.25	-	50/0.25	-
WM1-100L	one hundred	10 16 20 32 40 50 63 80 100	17.5/0.30	4/0.80	35/0.25	8/0.50
WM1-100M			25/0.25	5/0.70	50/0.25	10/0.50
WM1-100H			42.5/0.25	10/0.50	85/0.20	20/0.30
WM1-225L	two hundred and twenty-five	100 125 160 180 200 225	17.5/0.3	4/0.80	35/0.25	8/0.50
WM1-225M			25/0.25	5/0.70	50/0.25	10/0.50
WM1-225H			42.5/0.25	10/0.50	85/0.20	20/0.30
WM1-400L	four hundred	225 250 315 350 400	25/0.25	5/0.70	50/0.25	10/0.50	seventy
WM1-400M			32/0.25	5/0.70	65/0.20	10/0.50
WM1-400H			50/0.25	10/0.50	100/0.20	20/0.30
WM1-630L	six hundred and thirty	400 500 630	25/0.25	5/0.70	50/0.25	10/0.50
WM1-630M			32/0.25	5/0.70	65/0.20	10/0.50
WM1-630H			50/0.25	10/0.50	100/0.20	20/0.30