M1 Series M1-125/M/H/S/V/R/3300 MCCB Moulded Case Circuit Breaker

Product Description

1. Description
SM6 series moulded case circuit breaker is one of products developed and manufactured by adopting international advanced technology. It is supplied with rated insulating voltage 500 and 800V and used for the circuit of AC 50/60Hz, rated operating voltage AC 400V (or below), rated operating current up to 1 600A for infrequently changing over and starting of the motors. The products conforms to IEC60947-2 standard.


2. Main Technical Specification

Type	Rated Rated	Rated	Rated  insul- ating volt- age(V)	Rated operat- ing volt-age(V)	Arcing-ove distance(mm)	Ultimate short circuit breaking capacity (kA)	Service short circuit breaking capacity(kA)	Operation perform-ance		Utiliza-tion cat-egory
								Load	Unload
SM6-63L	(6),10,16, 20,25,32,40,50,63	3,4	500V	400V	0	25	18	1500	8500	A
SM6-63M			800V		0	50	35
SM6-125L	(10),16,20,25,32,40,50,63,80,100,125				0(≤50)	35	22
SM6-125M					0(≤50)	50	35
SM6-250L	100,125,160, 180,200,225				≤50	35	22	1000	7000
SM6-250M					≤50	50	35
SM6-400L	225,250,315, 350,400				≤50	50	35	1000	4000
SM6-400M					≤100	65	42
SM6-630L	400 500 600				≤100	50	35
SM6-630M					≤100	65	42
SM6-800M	630,700,800				≤100	75	50
SM6-1250M	1000,1250				≤100	100   150	6   80
SM6-1600M	1600				≤100

 
3. Protection Characteristic
The thermodynamic release of a circuit breaker provides the feature of inverse time-delay,while the magnetic release is the instantaneous operation as shown on table 2(distribution cir-cuit breaker) and table 3 (motor protection circuit breaker).

Rated current of release (A)	Thermodynamic release( ambient temperature land +40°C marine +45°C )		Operating current of magnetic release (A)
	1.05In(cold state) Inoperative time(h)	1.30In(heat state) Operative time(h)
10≤In≤63	≥1	<1	10|n+20%
63< In≤100	≥2	<2
100< In≤800	≥2	<2	5ln+20% 10ln+20%