Product Introduction

EKM1-63DC is a specialized DC circuit breaker designed specifically for photovoltaic applications with rated working voltage up to DC 1000V. Its advanced arc extinguishing and current limiting system quickly disconnects fault currents in DC power distribution systems, protecting vital photovoltaic modules from damage caused by high DC reverse current and AC feedback current during inverter failures. This ensures reliable and safe operation of your entire solar PV system.

Features

• Enhanced Safety: Specialized design protects expensive solar components from damage

• Superior Performance: Advanced arc extinguishing system quickly isolates fault conditions

• Versatile Configuration: Multiple pole configurations for different voltage requirements

• Internationally Certified: Complies with global safety and performance standards

• Reliable Operation: Thermo-magnetic trip mechanism for both thermal overload and short-circuit protection

Applications

• Solar PV system DC circuit protection

• Inverter input protection

• DC power distribution systems

• Photovoltaic array protection circuits

• Off-grid and grid-tied solar installations

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)	6,10,16,20,25,32,40,50,63A
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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