ABB S201-B2 single-pole miniature circuit breaker with a 2 A rated current, Type B tripping characteristic and 6 kA breaking capacity for control, instrumentation and low-current electrical circuits.
£30.73
The ABB S201-B2 is a compact and dependable single-pole miniature circuit breaker (MCB) designed to protect low-voltage electrical circuits against overloads and short circuits. As part of the established ABB System pro M compact S200 range, it combines current-limiting performance with reliable thermal-magnetic tripping for residential, commercial and industrial installations.
Featuring a 2 A rated current and a Type B tripping characteristic, the S201-B2 is particularly suitable for circuits with low starting currents. Typical uses include control circuits, instrumentation, signalling equipment, lighting controls and other sensitive low-current electrical loads.
The circuit breaker has a rated short-circuit breaking capacity of 6 kA at 230/400 V AC in accordance with IEC/EN 60898-1. Its slim single-module format and standard DIN rail mounting make it straightforward to install within distribution boards, control panels and automation enclosures.
The ABB S201-B2 uses two complementary tripping mechanisms to provide effective circuit protection. Its delayed thermal release responds to sustained overload conditions, while the electromagnetic release rapidly disconnects the supply when a short circuit occurs.
The Type B characteristic is intended for circuits where normal switch-on currents remain relatively low. This makes the S201-B2 well suited to sensitive control equipment, instrumentation and auxiliary circuits where dependable protection and predictable tripping performance are required.
| Current | 2 A |
|---|---|
| Phase | Single Phase |
| Manufacturer | ABB |
| Series | System pro M compact S200 |
| Model | S201-B2 |
| Manufacturer part number | 2CDS251001R0025 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 2 A |
| Tripping characteristic | B |
| Number of poles | 1 |
| Number of protected poles | 1 |
| Rated operating voltage | 230/400 V AC |
| Frequency | 50 / 60 Hz |
| Rated breaking capacity | 6 kA |
| Ultimate breaking capacity | 10 kA according to IEC/EN 60947-2 |
| Rated insulation voltage | 440 V |
| Rated impulse withstand voltage | 4 kV |
| Current-limiting class | 3 |
| Protection rating | IP20 |
| Mounting type | DIN rail |
| Module width | 1 module |
| Dimensions (H × W × D) | approx. 88 × 17.5 × 69 mm |
| Weight | approx. 0.13 kg |
| EAN | 4016779612944 |
The ABB S201-B2 protects low-current electrical circuits against overloads and short circuits. It is commonly used with control, instrumentation, signalling and lighting equipment.
The miniature circuit breaker has a rated current of 2 A.
A Type B characteristic is designed for circuits with relatively low switch-on or inrush currents, making it suitable for resistive loads, control systems and sensitive electrical equipment.
The ABB S201-B2 has a rated short-circuit breaking capacity of 6 kA according to IEC/EN 60898-1.
It is mounted onto a standard 35 mm DIN rail inside a compatible electrical distribution board, control panel or enclosure.
ABB System pro M compact circuit protection devices are widely used by electrical contractors, panel builders and automation engineers for dependable performance, efficient installation and reliable protection of low-voltage electrical systems.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...