MCB

EPBi6K Miniature Circuit Breaker（MCB）

Built as a reliable all-rounder for global electrical systems, the EPBi6K series MCB is engineered to deliver consistent protection in residential, commercial, and light-industrial environments — tailored for B2B buyers seeking a versatile, high-performance solution for diverse projects. Certified to IEC/EN 60898 standards, it offers a 6kA breaking capacity, 0.5–63A rated currents, and B/C/D tripping curves, with voltage ratings of 240V/415V AC and configurations from 1P to 4P. We support flexible order volumes, from large-scale project runs to small trial orders, to align with your business needs.

Product Details

Product Descriprion

The EPBi6K series is designed for adaptability, making it a trusted choice for distributors, contractors, and OEM partners serving markets with varying electrical standards. Its thermal-magnetic tripping mechanism provides precise overload and short-circuit protection for 50/60Hz AC circuits, while temperature compensation ensures stable performance across -5°C to +40°C, even in fluctuating environmental conditions.

With a compact 18mm pole width and standard DIN rail mounting, the EPBi6K integrates seamlessly into distribution boards, whether for new construction or retrofit projects. The visible contact indicators and color-coded handles simplify installation and maintenance, while compatibility with copper conductors (1.5–16mm²) and precise torque specifications support fast, reliable assembly in bulk applications. Built for longevity, it features 4,000 electrical operations and 10,000 mechanical cycles, backed by a durable construction that meets IP20 protection standards.

For B2B partners, the EPBi6K offers flexible customization options, including custom packaging, neutral labeling, and complete certification documentation, to support your brand and market requirements. We welcome both recurring wholesale orders and small trial runs to help you test performance and meet project demands.

Application

Standard	Confirming to EN/IEC60898
Breaking capacity	6kA
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 240V~ AC 50/60Hz 2P 240V/415V~ AC 50/60Hz 3P,4P 415V~AC 20/60Hz Rated insulation voltage Ui:500V Rated impulse withstand voltage Uimp:6000V Energy limiting class:3
Ambient temperature	-5C to+40℃ pursuant to EN/IEC60898
Characteristic	Thermal operating limit:(1.13-1.45)×In Magnetic operating:B:(3-5)x 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	16mm² flexible or 25mm² rigid up to 25A ratings 25mm² flexible or 35mm²rigid for 32A to 63A ratings
Protection degree	IP20
Installation	Mounting on 35mm DIN rail
Width	17.8mm per pole

Curves

Endurance(operations)

Category	Operations	Operation frequency	Rated current
Electrical endurance	4000	240/h	0.5~32
Electrical endurance	4000	120/h	40~63
Mechanical endurance	10000	240/h	0.5~63

Please refer to table below for temperature compensation correction

In(A)	Temperature compensation coefficient under various operational temperature
In(A)	-10℃	0℃	10℃	20℃	30℃	40℃	50℃	55℃	60℃
1~6	1.20	1.14	1.09	1.05	1.00	0.96	0.80	0.75	0.70
10~32	1.18	1.12	1.08	1.04	1.00	0.96	0.92	0.88	0.84
40~63	1.16	1.12	1.08	1.03	1.00	0.9	0.87	0.83	0.80