MCB

EPB10K Series Miniature Circuit Breaker

Engineered for demanding commercial and light-industrial applications, the EPB10K series MCB delivers a robust 10kA breaking capacity, setting it apart as a premium choice for high-current distribution systems. Certified to EN/IEC 60898 standards, it provides reliable thermal-magnetic protection against overloads and short circuits, with a rated current range of 0.5A to 63A and configurations from 1P to 4P. Designed for B2B buyers, distributors, and project partners, this model supports both bulk orders and small trial runs to fit your business needs.

Product Details

Product Descriprion

The EPB10K series is built for performance in environments where high short-circuit withstand capability is critical. Its 10kA breaking capacity ensures dependable circuit protection even under severe fault conditions, making it ideal for commercial buildings, industrial control panels, and high-density distribution boards. With support for 230/400V AC systems and B/C/D tripping curves, it adapts to diverse load types, from lighting circuits to motor-driven equipment.

A key advantage of the EPB10K series is its dual-connection design, which supports both standard busbar and conductor connections for flexible installation. The flame-retardant, heat-resistant enclosure and energy-storage operating mechanism deliver exceptional durability, with an 8,000-cycle electrical endurance rating and 20,000-cycle mechanical lifespan. Mounted on a standard 35mm DIN rail with a compact 17.5mm pole width, it integrates seamlessly into new or existing electrical systems.

We cater to the unique needs of B2B clients, including distributors, contractors, and OEM partners. Whether you require large-scale project orders, regular inventory restocks, or small trial orders to test performance, we offer flexible terms and full support. Custom packaging, private labeling, and complete export documentation are available to align with your brand and market requirements.

Application

Standard	Confirming to EN/IEC60898
Breaking capacity	10kA
Protection	Against overload and short circuit
Rated current In	0.5,1,2,3,4,6,10,13,16,20,25,32,40,50,63A
Rated voltage	1pole 230/400V AC 50/60Hz 2,3,4pole 400V AC 50/60Hz Rated insulation voltage Ui:500V Rated impulse withstand voltage Uimp:6000V Energy limiting class:3
Ambient temperature	-5°C to+40℃ pursuant to EN/IEC60898
Characteristic	Thermal operating limit:(1.13-1.45)×In Magnetic operating:B:(3-5)×In C:(5-10)×In D:(10-20)×In
Number of poles	1P,1P+N,2P,3P,3P+N and 4P
Type of trip	Thermal/magnetic release
Type of terminal	Lug type and Pin type
Terminal capacity	16mmflexible or 25mm²rigid up to 25A ratings 25mm2flexible or 35mm2 rigid for 32A to 63A ratings
Protection degree	IP20
Installation	Mounting on 35mm DIN rail
Width	17.5mm per pole

Curves

Overcurrent protecting characteristics

No	Rated current of release(A)	Initial state	Test current	Specified time	Result to be obtained	Remarks
1	1~63	cold state	1.13In	t≤1h	Non-trip	Setting current up to specified value steadily in 5S
2	1~63	upon the previous test	1.45In	t<1h	trip
3	In≤32	cold state	2.55In	1s<t<60s	trip
	In>32	cold state	2.55In	1s<t<120s	trip
	1~63	cold state	3In	t≤0.1s	Non-trip	B type
	1~63	cold state	5In	t<1.1s	trip	B type
	1~63	cold state	5In	t≤0.1s	Non-trip	C type
4	1~63	cold state	10In	t<1.1s	trip	C type
	1~63	cold state	10In	t≤0.1s	Non-trip	D type
	1~63	cold state	20In	t<1.1s	trip	D type

Endurance(operations)

Category	Operations	Operation frequency	Rated current
Electrical endurance	8000	240/h	0.5~32
Electrical endurance	8000	120/h	40~63
Mechanical endurance	20000	240/h	0.5~63