ALF6K Miniature Circuit Breaker(DC)
Product Details
Product Descriprion
The DC ALF6K miniature circuit breaker delivers overload and short-circuit protection for DC systems, rated at 250V/500V DC (1-pole: 250V, 3/4-pole: 500V) with 0.5A-63A current range. Featuring enhanced arc-extinguishing technology, it achieves 2500A breaking capacity (DC) and complies with IEC 60947-2.
Thermal-magnetic tripping guarantees precise operation from -5°C to +40°C, backed by 4,000 electrical operations and 10,000 mechanical cycles. With 18mm uniform width, polarity-marked contacts, and trip indicators, it supports 1.5-16mm² copper wires (1.2-3.0Nm torque).
Ideal for PV systems, EV charging stations, and DC distribution panels, providing critical protection for renewable energy and industrial DC circuits.
Application
|
Standard |
Confirming to EN/IEC60947-2 |
|
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 250V DC 50/60Hz 2,3,4pole 500V DC 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 |
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 corection
|
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
Features
The breaker is characterized by compact design,light weight,elegant appearance,high breaking capacity,swift releasing,long service life. Different handle color for different rated current ,with contactor condition indicator.
1. Enhanced Electrical Endurance Performance
High-cycle contacts support 4,000+ operations at full load, exceeding standard obligations.
2. Precision Temperature Compensation
Consistent tripping from -10°C to 60°C via precise bimetal calibration.
3. Universal Torque Installation
Streamlined 2N·m terminal torque for all rated currents, eliminating tool adjustments.