ABB S302P-B40 2-pole miniature circuit breaker with a 40 A rated current, Type B tripping characteristic and 25 kA short-circuit breaking capacity for industrial and commercial circuit protection.
£98.05
The ABB S302P-B40 (Product ID: 2CDS382001R0405) is a high-performance 2-pole miniature circuit breaker (MCB) engineered to provide reliable protection against overloads and short circuits in commercial and industrial electrical installations. As part of the proven ABB System pro M compact S300P series, it combines high breaking capacity with compact dimensions and dependable long-term performance.
Featuring a Type B tripping characteristic, the S302P-B40 is ideally suited for protecting resistive and lightly inductive loads where fast response to overloads is required. Its robust thermal and magnetic trip mechanisms help safeguard electrical equipment, wiring and distribution systems from potentially damaging fault conditions.
With a rated current of 40 A, a 2-pole configuration and a 25 kA breaking capacity, the ABB S302P-B40 is an excellent choice for industrial control panels, commercial switchboards and electrical distribution applications requiring high-performance circuit protection.
The ABB S302P-B40 automatically disconnects electrical circuits when overload or short-circuit conditions occur, helping prevent equipment damage, cable overheating and electrical hazards. Its resettable design allows circuits to be safely restored after faults have been resolved.
The Type B tripping characteristic provides fast operation at relatively low fault currents, making this breaker well suited to lighting circuits, distribution boards, resistive loads and other installations where high inrush currents are not expected.
| Current | 40 A |
|---|---|
| Manufacturer | ABB |
| Series | System pro M compact S300P |
| Model | S302P-B40 |
| Product ID | 2CDS382001R0405 |
| Product type | Miniature circuit breaker (MCB) |
| Rated current | 40 A |
| Number of poles | 2 |
| Number of protected poles | 2 |
| Tripping characteristic | Type B |
| Rated operational voltage | Up to 415 V AC / 125 V DC |
| Rated insulation voltage | 500 V |
| Rated impulse withstand voltage | 6 kV |
| Breaking capacity to IEC 60947-2 | 25 kA at 400 V AC |
| Breaking capacity to EN 60898-1 | 20 kA at 400 V AC |
| Frequency | 50 / 60 Hz |
| Protection rating | IP20 (IP40 when installed in enclosure) |
| Overvoltage category | IV |
| Pollution degree | 3 |
| Mounting type | DIN rail |
| Terminal type | Screw terminals |
| Dimensions (H × W × D) | approx. 88 × 35 × 69 mm |
| Weight | approx. 0.25 kg |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
The ABB S302P-B40 protects electrical circuits against overloads and short circuits in commercial and industrial installations.
This miniature circuit breaker has a rated current of 40 A.
Type B breakers trip quickly at relatively low fault currents, making them ideal for standard electrical circuits with resistive or lightly inductive loads.
The S302P-B40 offers an ultimate short-circuit breaking capacity of up to 25 kA at 400 V AC.
The breaker is designed for installation on a standard DIN rail inside electrical switchboards and industrial control panels.
ABB System pro M compact miniature circuit breakers are widely trusted by electrical engineers, panel builders and industrial maintenance professionals for delivering dependable circuit protection, excellent reliability and long service life.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
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...