Mccb - Yueqing Leijin Electric Co., Ltd

Description:

APPLICATION:

DZ20 series mccb(hereinafter referred to as circuit breaker) is suitable for distributing line of AC50Hz, rated working voltage 380V(400V)and below, rated current 16A~1250A, used to distribute electric energy and protect circuitry and equipment against overload, short-circuit and under-voltage. Hereinto, type Y, J and G circuit breakers of rated current 225A and below and type Y circuit breakers of rated current 400A also can be used to protect motor. Under normal condition, they also can be applied to switch circuitry and start the motor infrequently and respectively.

MAIN TECHNICAL PARAMETERS:

Rated value of circuit breaker

Frame size	Conventional Thermal current Ith A	Class of short-circuit Breaking capacity	Short-circuit breaking capacity kA (effective value)		Rated current of circuit breaker In A	Flashover Distance mm
Frame size	Conventional Thermal current Ith A	Class of short-circuit Breaking capacity	Icu/cos?	Icu/cos?	Rated current of circuit breaker In A	80

100	100	Y	18/0.30	14/0.30	16,20,25,32,40,50,63,80,100
100	100	J	35/0.25	18/0.30	16,20,25,32,40,50,63,80,100


225	225	Y	25/0.25	19/0.30	100,125,160,180,200,225
225	225	J	42/0.25	25/0.25	100,125,160,180,200,225

						100
400	400	Y	30/0.25	23/0.25	200,250,315,350,400
400	400	J	42/0.25	25/0.25	200,250,315,350,400


630	630	Y	30/0.25	23/0.25	400,500,630
630	630	J	50/0.25	25/0.25	400,500,630
1250	1250	Y	50/0.25	28/0.25	630,700,800,1000,1250	120
1250	1250	J	65/0.25	32.5/0.25	630,700,800,1000,1250	120