Product Introduction

EKM1-125DC series DC miniature circuit breaker is engineered specifically for high-current photovoltaic applications requiring superior protection. With rated currents up to 125A and voltage ratings up to 1000VDC, this circuit breaker provides essential overcurrent and short-circuit protection for commercial and utility-scale solar installations. The advanced thermo-magnetic trip mechanism ensures reliable protection against both thermal overloads and sudden fault currents.

Product Parameters

Standard	IEC/EN60947-2
Protection	Overcurrent and short circuit
Type of trip	Thermo-magnetic
No. of poles	1P,2P,4P
Rated currents (In)	80, 100, 125A
Rated voltage (Ue)	1P(250VDC), 2P(500VDC), 4P(1000VDC)
Rated insulation voltage (Ui)	500V
Rated breaking capacity	6,000A
Rated impulse withstand voltage (Uimp) (1.2/50µs)	4kV
Dielectric test voltage	2kV (50/60Hz, 1 min.)
Thermal release characteristic	(1.05-1.30) x In
Magnetic release characteristic	(8-12) x In
Electrical life	4,000 Cycles
Mechanical life	10,000 Cycles
Contact position indicator	Yes
Protection degree	IP20
Ambient temperature	-5℃ to +40℃, Max. 95% humidity
Terminal connection type	Cable/Pin-type busbar/Fork-type busbar
Max. terminal size for cable	25mm²
Max. tightening torque	2.5N.m
Installation	Mounting on 35mm DIN rail
Connection	According to the wiring diagram

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EKM1-125DC DC Miniature Circuit Breaker Up to 125A & 1000VDC