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ABB S201M-B40 MCB – S200M – 1P – B – 40A
ABB S201M-B40 single pole 40 A B curve miniature circuit breaker from the System pro M compact S200M range, designed for reliable overload and short circuit protection in electrical distribution circuits.
£13.64
Why Choose the ABB S201M-B40 Miniature Circuit Breaker?
The ABB S201M-B40 is a robust and reliable single pole miniature circuit breaker (MCB) from the professional ABB System pro M compact S200M series. Designed for dependable overload and short circuit protection, this 40 A Type B MCB is suitable for electrical distribution circuits in residential, commercial and industrial installations.
The S201M-B40 combines ABB’s current limiting technology with delayed thermal overload protection and electromechanical short circuit protection. This helps reduce fault energy during short circuit events while maintaining safe and consistent circuit interruption when abnormal current conditions occur.
With a 40 A rated current, B curve tripping characteristic and 10 kA breaking capacity at 230/400 V AC, the ABB S201M-B40 is ideal for distribution boards, control panels, lighting circuits, power circuits and general electrical installations. Its compact DIN rail format makes it simple to install inside consumer units, switchboards and industrial enclosures.
Key Advantages
- Compact single pole miniature circuit breaker.
- 40 A rated current for general circuit protection.
- B curve tripping characteristic for standard electrical loads.
- 10 kA breaking capacity at 230/400 V AC.
- Current limiting design helps reduce short circuit energy.
- Thermal overload and electromechanical short circuit protection.
- DIN rail mounting for fast installation.
- Suitable for residential, commercial and industrial applications.
Key Features
- ABB System pro M compact S200M series.
- Single pole (1P) configuration.
- 40 A rated current.
- B curve tripping characteristic.
- 10 kA rated short circuit breaking capacity.
- Current limiting MCB design.
- Delayed thermal tripping mechanism for overload protection.
- Electromechanical tripping mechanism for short circuit protection.
- Compact modular width for DIN rail installations.
Reliable Protection for Electrical Distribution Circuits
Miniature circuit breakers such as the ABB S201M-B40 protect electrical installations by automatically disconnecting the circuit during overload or short circuit conditions. The thermal tripping element responds to sustained overloads, while the magnetic element provides rapid disconnection during short circuit faults.
The B curve characteristic is commonly used for circuits with standard inrush currents, including lighting, socket and general distribution applications. As part of ABB’s S200M range, the S201M-B40 provides high breaking performance, compact installation and dependable protection for modern electrical systems.
Typical Applications
- Electrical distribution boards.
- Consumer units and switchboards.
- Lighting and power circuits.
- Commercial building installations.
- Industrial control panels.
- Residential and light industrial electrical systems.
Technical Specifications
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| Current | 40 A | |
|---|---|---|
| Phase | Single Phase | |
| Poles | 1-pole | |
| Device Type | MCB | |
| Trip Curve | B curve | |
| Breaking Capacity | 10 kA | |
| Manufacturer | ABB | |
| Series | System pro M compact S200M | |
| Model | S201M-B40 | |
| MPN | 2CDS271001R0405 | |
| Product type | Miniature circuit breaker (MCB) | |
| Rated current | 40 A | |
| Number of poles | 1P | |
| Tripping characteristic | B | |
| Rated operational voltage | 230/400 V AC | |
| Rated insulation voltage | 440 V | |
| Rated impulse withstand voltage | 4 kV | |
| Frequency | 50 / 60 Hz | |
| Breaking capacity | 10 kA at 230/400 V AC | |
| Current limiting class | 3 | |
| Protection rating | IP20 | |
| Mounting type | DIN rail | |
| Width | 1 modular spacing | |
| Built-in depth | 69 mm | |
| Weight | approx. 0.13 kg | |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2 | |
| HS Code | 85362010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB S201M-B40 used for?
The S201M-B40 is used to protect electrical circuits against overloads and short circuits in residential, commercial and industrial installations.
What is the rated current of the ABB S201M-B40?
The ABB S201M-B40 has a rated current of 40 A.
What does the B curve characteristic mean?
A B curve MCB is designed for circuits with relatively low inrush current, making it suitable for standard lighting, socket and general distribution applications.
How many poles does the S201M-B40 have?
The ABB S201M-B40 is a single pole (1P) miniature circuit breaker.
Where is this circuit breaker typically installed?
It is typically installed on a DIN rail inside distribution boards, consumer units, switchboards and control panels.
Trusted by Electrical Professionals Worldwide
ABB System pro M compact miniature circuit breakers are widely trusted by electricians, panel builders and electrical engineers for reliable circuit protection, compact installation and consistent performance in modern electrical systems.
