ALFi6K Miniature Circuit Breaker（MCB）
Product Details
Product Descriprion
The ALFi6K series is engineered for flexibility, making it a go-to choice for distributors, contractors, and OEM partners serving residential, commercial, and light-industrial markets. Its thermal-magnetic tripping mechanism with B, C, and D curves adapts to diverse loads, from standard lighting circuits to small machinery, while temperature compensation ensures stable performance across -5°C to +40°C.
Built for long-term use, the ALFi6K boasts 4,000 electrical operations and 10,000 mechanical cycles, backed by a durable design with visible contact indicators and color-coded handles for quick identification. The compact 18mm pole width and standard DIN rail mounting simplify installation, with copper conductor compatibility (1.5–16mm²) and precise torque specifications to support fast, reliable assembly in large-scale projects.
We understand that every business has unique requirements, so we offer flexible order terms for the ALFi6K series: bulk wholesale orders, project-specific runs, and small trial orders are all welcome. Custom packaging, neutral labeling, and complete certification documentation are available to help you meet your market and regulatory needs.
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 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 |
-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 |
17.5mm per pole |
Curves
Endurance(operations)
|
Category |
Operations |
Operation frequency |
Rated current |
|
Electrical endurance |
4000 |
240/h |
0.5~32 |
|
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
|
||||||||
|
-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 |
Wiring
The suitable conductors should be used for connection,see table for relative parameters.
|
Rated current In(A) |
Nominal cross section area(mm²) |
Tightening torque (N.m) |
|
1~6 |
1 |
2 |
|
10 |
1.5 |
2 |
|
13,16,20 |
2.5 |
2 |
|
25 |
4 |
2 |
|
32 |
6 |
2 |
|
40,50 |
10 |
2 |
|
63 |
16 |
2 |
Product display
Product video
Features
✅Versatile, cost-effective protection: 6kA breaking capacity for everyday commercial and residential applications
✅Wide rated current range (0.5–63A) and B/C/D curves to suit nearly any load type
✅Compact DIN-rail design with visible contact indicators for quick, safe installation
✅High endurance ratings for long-term reliability in continuous use
✅Flexible order quantities: bulk, project, and trial orders all supported
✅OEM-friendly options: custom branding, packaging, and export documentation
✅Ideal for distributors, contractors, and OEM electrical assembly partners