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ABB S304P-B40 MCB – 4P – B Curve – 40A – 25kA
ABB S304P-B40 miniature circuit breaker, a four pole 40 A AC protection device with B tripping characteristic and 25 kA breaking capacity for industrial and electrical distribution systems.
£117.77
Why Choose the ABB S304P-B40 Miniature Circuit Breaker?
The ABB S304P-B40 is a reliable miniature circuit breaker (MCB) designed for effective overcurrent and short-circuit protection in industrial, commercial and electrical distribution systems. As part of the advanced ABB System pro M compact S300P series, it provides dependable circuit protection with a compact modular construction for professional electrical installations.
This circuit breaker features a B tripping characteristic, providing rapid protection for standard electrical circuits with low inrush current levels. Its four-pole configuration without switched neutral makes it suitable for three-phase AC applications where reliable fault protection and efficient installation are required.
With a rated current of 40 A and a rated breaking capacity of 25 kA, the ABB S304P-B40 provides dependable protection for electrical distribution systems and industrial applications. Its DIN-rail mounting design enables straightforward installation inside electrical distribution boards and control panels.
Key Advantages
- High-performance miniature circuit breaker for industrial and commercial electrical protection.
- 40 A rated current suitable for general AC circuit protection applications.
- 25 kA breaking capacity for reliable short-circuit interruption.
- B tripping characteristic suitable for standard circuits with low inrush currents.
- 4-pole design without neutral switching for three-phase circuit applications.
- Compatible with ABB System pro M compact modular protection systems.
Key Features
- ABB System pro M compact S300P series.
- 40 A rated current.
- B tripping characteristic.
- 25 kA rated breaking capacity.
- 4-pole configuration (no neutral).
- AC circuit protection.
- DIN-rail mounting design.
- Compact modular format for electrical distribution assemblies.
Reliable Circuit Protection for Industrial Electrical Systems
Miniature circuit breakers such as the ABB S304P-B40 protect electrical installations by automatically disconnecting circuits during overload and short-circuit conditions. This improves operational safety while helping protect connected equipment and electrical infrastructure.
The ABB System pro M compact S300P series is engineered for modern electrical distribution systems where compact dimensions, high breaking capacity and dependable protection are required. Its modular DIN-rail design allows efficient integration into control panels and distribution boards.
Typical Applications
- Industrial control panels and electrical cabinets.
- Three-phase machinery and automation equipment.
- Commercial electrical distribution boards.
- General power distribution circuits.
- OEM machine-building applications.
- Industrial installations requiring reliable fault protection.
Technical Specifications
Tick the specs you need, then view products that match.
| Current | 40 A | |
|---|---|---|
| Poles | 4-pole | |
| Phase | Three Phase | |
| Device Type | MCB | |
| Trip Curve | B curve | |
| Breaking Capacity | 25 kA | |
| Mounting type | DIN-rail mounting | |
| Tripping characteristic | B | |
| Rated current | 40 A | |
| Supply type | AC | |
| Product type | Miniature circuit breaker (MCB) | |
| Manufacturer | ABB | |
| Series | System pro M compact S300P | |
| Model | S304P-B40 | |
| Order code | 2CDS384001R0405 | |
| Rated breaking capacity | 25 kA | |
| Supply | AC |
Frequently Asked Questions
What is the ABB S304P-B40 used for?
The ABB S304P-B40 is used for overcurrent and short-circuit protection in AC electrical distribution systems, industrial equipment and automation applications.
What is the rated current of this circuit breaker?
The circuit breaker has a rated current of 40 A.
What is the breaking capacity of the ABB S304P-B40?
The ABB S304P-B40 has a rated breaking capacity of 25 kA.
What does the B tripping characteristic provide?
The B tripping characteristic provides protection suitable for standard electrical circuits with low inrush currents.
How is the ABB S304P-B40 installed?
The circuit breaker is designed for DIN-rail mounting inside electrical distribution boards and control cabinets.
Trusted by Electrical Engineers Worldwide
ABB System pro M compact S300P miniature circuit breakers are widely used by electrical engineers and machine builders to provide reliable protection, efficient installation and dependable operation in modern industrial and commercial electrical systems.
