DS12 series DC fast circuit breakerDetailed product description：

The DS12/DS14 series DC fast circuit breaker is suitable for short-circuit and overload protection in DC circuits with a rated current of 6300A and below at 1500V. Suitable for protection switches of silicon rectifier units and DC motor units in electrified railways, urban traction, mining, steel rolling, chemical industry, and other fields.

DS12 series DC fast circuit breaker models and their meanings:

Main technical parameters of DS12 series DC fast circuit breaker:

Set current range A	Breaking ability (KA) six （di/dt=3×10 A/S)	Overvoltage during disconnection/test voltage	Full break time (ms)	Current limiting coefficient	Mechanical lifespan (times)	Electrical lifespan (times)
（0.8-2)Ie	30, 40, 50	≤3	thirty	≤0.65 ≤0.7	five thousand

model project		DS12- 10/08	DS12- 20/08	DS12- 30/08	DS12- 60/08	DS14- 10/15	DS14- 20/15	DS14- 32/15	DS14- 63/15
Rated voltage V		800V				1500V
Rated current A		one thousand	two thousand	three thousand	six thousand	one thousand	two thousand	three thousand and two hundred	six thousand and three hundred
Rated current range A		800-2000	1600-4000	2400-6000	4800-12000	800-2000	1600-4000	2400-6300	4800-12600
Mechanical lifespan (times)		five thousand	five thousand	four thousand	four thousand	five thousand	five thousand	four thousand	four thousand
Electrical lifespan (times)		five hundred	four hundred	two hundred	one hundred	five hundred	four hundred	two hundred	one hundred
close the circuit	Voltage V （AC,DC）	220/28 110/56	220/28 110/56	220/34 110/68	220/56 110/78	220/28 110/56	220/28 110/56	220/34 110/68	220/56 110/98

DS12 series DC fast circuit breaker