DC/AC Miniature Circuit Breaker

This series of DC MCB is designed for low-voltage DC systems, featuring a thermomagnetic trip mechanism for precise overload and short-circuit protection. With a breaking capacity of 10kA (compliant with IEC 60898-2), it supports rated voltages up to DC 250V/750V (1P/2P). Compact and modular (18mm width per pole), DIN rail-mounted, and ideal for harsh environments such as PV energy storage, EV charging stations, and telecom base stations. IP40 protection rating and certified to UL 489, TÜV, and other international standards, ensuring system safety and operational efficiency.

Rating			Specification
Frame size			63AF
No. of poles			1P, 2P, 3P, 4P
Rated current, In			1, 2, 3, 4, 6, 10, 16, 20, 25, 32, 40, 50, 63A
Rated operational voltage, Ue DC	Reference standard	Poles	1P	2P	3P	4P
	IEC 60947-2,Icu	Rated voltage	250V	500V	750V	1000V
		Breaking current	10kA	10kA	10kA	10kA
Rated insulation voltage, Ui			1000V
Rated impulse withstand voltage, Uimp			6kV
Trip characteristic			B (5In), C (8In)
Protection			Overload and short circuit
Endurance life (times)	Electrical		1,500
	Mechanical		20,000
Degree of protection			IP20
Tightening torque			18-4 AWG (0.75 … 25mm²) / 20 Kgf.cm
Installation			Mounting on 35mm DIN rail
Type of Terminal			Lug type
Type of trip			Thermal-Magnetic
Ambient temperature			40°C (Standard), -25~ +25°C (Use)
Approval			CE, SEMCO, CB