Miniature Circuit Breakers
A miniature circuit breaker (MCB) is a modular circuit breaker that interrupts the line with thermal tripping on overload and magnetic tripping on short circuit, and is reset once the fault is cleared. It is mounted on a DIN rail in residential, commercial and industrial panels to protect lighting, socket, control and small motor outputs. ABB, Schneider Electric, Siemens and Chint series include 1-, 2-, 3- and 4-pole models with B and C curves, in currents such as 6 A, 10 A, 16 A, 25 A and 32 A, with breaking capacities of 4.5 kA, 6 kA and 10 kA, as well as DC miniature circuit breakers for photovoltaic lines. Choose the rated current according to the cable cross-section and load current, the tripping curve according to the load's inrush current (B for loads with low inrush current, C for general use and motor loads), and the breaking capacity according to the short-circuit current at the connection point. Because breaking capacity is defined differently in IEC/EN 60898-1 and IEC/EN 60947-2, evaluate nameplate values against the same standard. A miniature circuit breaker is not a substitute for a residual current device; protection against earth leakage requires a residual current device or a miniature circuit breaker with residual current protection.
Products
- Schneider Electric A9N61521 Acti9 C60H-DC 2P 1A, 6kA C-Curve MCB — Schneider Electric · SKU: A9N61521 · TRY 4,675.94 · Made to order
- Schneider Electric A9F74201 Acti9 iC60N 2P 1A, 6kA C-Curve MCB — Schneider Electric · SKU: A9F74201 · TRY 724.91 · In stock
- Schneider Electric A9N61530 Acti9 C60H-DC 2P 15A ,6kA C-Curve MCB — Schneider Electric · SKU: A9N61530 · TRY 4,053.22 · Made to order
- Chint NXB-63S Series 1-Pole 3A 4.5kA C-Curve Miniature Circuit Breaker — Chint · SKU: 296706 · TRY 64.33 · Made to order
- Schneider Electric EZ9F43206 Easy9 2P 6A3kA C-Curve MCB — Schneider Electric · SKU: EZ9F43206 · TRY 1,028.59 · In stock
- Schneider Electric EZ9F27316 Pro MCB 3P B Curve 16A 6 kA — Schneider Electric · SKU: EZ9F27316 · TRY 1,301.03 · In stock
- Siemens 5SL6608-7YA Miniature Circuit Breaker 8 A 3+N-Pole C Characteristic 6 kA — Siemens · SKU: 5SL6608-7YA · TRY 852.00 · Made to order
- Siemens 5SL4220-7 Miniature Circuit Breaker 20 A 2-Pole C Characteristic 10 kA — Siemens · SKU: 5SL4220-7 · TRY 784.50 · Made to order
- Chint DZ-158 Series 4 Pole 80A 10kA C Curve Miniature Circuit Breaker — Chint · SKU: 158098 · TRY 1,608.06 · In stock
- Schneider Electric EZ9F34210 Easy9 2P 10A, 4.5kA C-Curve MCB — Schneider Electric · SKU: EZ9F34210 · TRY 967.44 · In stock
- Siemens 5SL3106-7YA Miniature Circuit Breaker 6 A 1-Pole C Characteristic 4.5 kA — Siemens · SKU: 5SL3106-7YA · TRY 516.00 · In stock
- Schneider A9N18369 C120N Circuit Breaker 3 Pole 125A C Curve — Schneider Electric · SKU: A9N18369 · TRY 4,171.65 · In stock
- Chint NXB-63S Series 3-Pole 32A 4.5kA C-Curve Miniature Circuit Breaker — Chint · SKU: 296830 · TRY 224.79 · Made to order
- Schneider Electric A9F73310 Acti9 iC60N 3P 10A, 6kA B-Curve MCB — Schneider Electric · SKU: A9F73310 · TRY 868.52 · In stock
- Schneider Electric A9F84440 Acti9 iC60H 4P 40A, 10kA C-Curve MCB — Schneider Electric · SKU: A9F84440 · TRY 1,821.39 · Made to order
- Siemens 5SL6125-7 Miniature Circuit Breaker 25 A 1-Pole C Characteristic 6 kA — Siemens · SKU: 5SL6125-7 · TRY 130.50 · In stock
- Schneider Electric EZ9F59110 Pro MCB 1P C Curve 10A 10 kA — Schneider Electric · SKU: EZ9F59110 · TRY 472.60 · In stock
- Siemens 5SL6308-7 Miniature Circuit Breaker 8 A 3-Pole C Characteristic 6 kA — Siemens · SKU: 5SL6308-7 · TRY 538.00 · Made to order
- Schneider Electric A9F73110 Acti9 iC60N 1P 10A, 6kA B-Curve MCB — Schneider Electric · SKU: A9F73110 · TRY 214.28 · Made to order
- Schneider Electric A9F74370 Acti9 iC60N 3P 0.5A, 6kA C-Curve MCB — Schneider Electric · SKU: A9F74370 · TRY 1,438.42 · Made to order
- Schneider Electric EZ9F23120 Easy9 1P 20A, 3kA B-Curve MCB — Schneider Electric · SKU: EZ9F23120 · TRY 266.88 · In stock
- Siemens 5SL6620-7 Miniature Circuit Breaker 20 A 3+N-Pole C Characteristic 6 kA — Siemens · SKU: 5SL6620-7 · TRY 884.75 · Made to order
- Siemens 5SL4340-7 Miniature Circuit Breaker 40 A 3-Pole C Characteristic 10 kA — Siemens · SKU: 5SL4340-7 · TRY 1,233.00 · Made to order
- Chint NXB-63S Series 2-Pole 2A 4.5kA C-Curve Miniature Circuit Breaker — Chint · SKU: 296783 · TRY 185.76 · Made to order
- Schneider Electric EZ9F34250 Easy9 2P 50A, 4.5kA C-Curve MCB — Schneider Electric · SKU: EZ9F34250 · TRY 1,384.43 · In stock
How to choose Miniature Circuit Breakers
A miniature circuit breaker (MCB) is a modular circuit breaker that interrupts the line with thermal tripping on overload and magnetic tripping on short circuit, and is reset once the fault is cleared. It is mounted on a DIN rail in residential, commercial and industrial panels to protect lighting, socket, control and small motor outputs.
- Separate overcurrent/leakage protection, motor starting and local isolation requirements.
- Select rated current, pole count and breaking capacity (kA) from the installation calculation.
- Match coil voltage, auxiliary contacts and tripping curve to the control circuit and load type.
Frequently asked questions
What is Miniature Circuit Breakers and where is it used?
A miniature circuit breaker (MCB) is a modular circuit breaker that interrupts the line with thermal tripping on overload and magnetic tripping on short circuit, and is reset once the fault is cleared. It is mounted on a DIN rail in residential, commercial and industrial panels to protect lighting, socket, control and small motor outputs.
What should I compare when choosing Miniature Circuit Breakers?
Choose the rated current according to the cable cross-section and load current, the tripping curve according to the load's inrush current (B for loads with low inrush current, C for general use and motor loads), and the breaking capacity according to the short-circuit current at the connection point.
Where can I find technical details for Miniature Circuit Breakers products?
A miniature circuit breaker is not a substitute for a residual current device; protection against earth leakage requires a residual current