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2CDS381001R0505 ABB S301P-B50 Miniature Circuit Breaker – 1P – B – 50 A
ABB S301P-B50 single-pole miniature circuit breaker with a 50 A rated current, B tripping characteristic and 25 kA breaking capacity for industrial and commercial circuit protection.
£25.23
Why Choose the ABB S301P-B50 Miniature Circuit Breaker?
The ABB S301P-B50 (2CDS381001R0505) is a premium single-pole miniature circuit breaker (MCB) designed to provide dependable protection against overloads and short circuits in demanding industrial and commercial electrical installations. As part of the trusted ABB System pro M compact S300P series, it combines exceptional reliability, a high breaking capacity and compliance with international IEC and UL standards.
Featuring a B tripping characteristic, the S301P-B50 is ideal for circuits with low inrush currents, providing fast disconnection to protect lighting circuits, resistive loads, control panels and other sensitive electrical installations. Its precision thermal and magnetic trip mechanisms help safeguard equipment whilst minimising downtime.
With a 50 A rated current, single-pole configuration and DIN rail mounting, this miniature circuit breaker is perfectly suited to industrial control panels, commercial distribution boards, OEM machinery and electrical installations requiring dependable circuit protection.
Key Advantages
- Compact single-pole miniature circuit breaker for industrial and commercial installations.
- 50 A rated current with B tripping characteristic.
- Fast protection for lighting and resistive electrical circuits.
- Reliable overload and short-circuit protection.
- 25 kA breaking capacity for demanding applications.
- DIN rail mounting enables fast installation and maintenance.
Key Features
- ABB System pro M compact S300P series.
- 50 A rated current.
- B tripping characteristic.
- Single-pole (1P) configuration.
- 415 V AC rated operational voltage.
- 125 V DC rated operational voltage.
- 25 kA ultimate short-circuit breaking capacity.
- Thermal overload and magnetic short-circuit protection.
- DIN rail mounting.
- Fail-safe screw terminals with contact position indicator.
Reliable Protection for Low Inrush Current Circuits
Miniature circuit breakers automatically disconnect electrical circuits whenever overloads or short circuits occur, protecting wiring, equipment and connected devices from electrical damage. Their resettable design allows systems to be quickly restored once faults have been safely corrected.
The B tripping characteristic is ideal for circuits with relatively low inrush currents, including lighting installations, resistive heating loads, office equipment and general-purpose commercial electrical systems where rapid fault clearance is required.
Typical Applications
- Commercial distribution boards.
- Lighting circuits.
- Office and commercial buildings.
- Industrial control panels.
- OEM machinery.
- General-purpose electrical installations.
Technical Specifications
Tick the specs you need, then view products that match.
| Current | 50 A | |
|---|---|---|
| Phase | Single Phase | |
| Poles | 1-pole | |
| Device Type | MCB | |
| Trip Curve | B curve | |
| Breaking Capacity | 25 kA | |
| Manufacturer | ABB | |
| Series | System pro M compact S300P | |
| Model | S301P-B50 | |
| SKU | 2CDS381001R0505 | |
| EAN | 4016779080064 | |
| Product type | Miniature circuit breaker (MCB) | |
| Rated current | 50 A | |
| Tripping characteristic | B | |
| Number of poles | 1P | |
| Rated AC voltage | 415 V AC | |
| Rated DC voltage | 125 V DC | |
| Frequency | 50 / 60 Hz | |
| Ultimate breaking capacity (Icu) | 25 kA | |
| Protection rating | IP20 (IP40 when installed in a suitable enclosure) | |
| Rated insulation voltage (Ui) | 500 V | |
| Impulse withstand voltage (Uimp) | 6 kV | |
| Operating temperature | -40 °C to +70 °C | |
| Mounting type | DIN rail | |
| Dimensions (H × W × D) | 88 × 17.5 × 69 mm | |
| Weight | Approx. 0.124 kg | |
| HS Code | 85362010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB S301P-B50 used for?
The S301P-B50 protects electrical circuits against overloads and short circuits, particularly lighting circuits and other low inrush current applications.
What is the rated current of this circuit breaker?
The ABB S301P-B50 has a 50 A rated current.
What does the B tripping characteristic provide?
The B characteristic provides rapid magnetic tripping for circuits with low inrush currents, making it suitable for lighting, resistive loads and commercial electrical installations.
What is the breaking capacity of the S301P-B50?
The circuit breaker provides an ultimate short-circuit breaking capacity of 25 kA.
How is the ABB S301P-B50 installed?
The circuit breaker mounts onto a standard DIN rail inside distribution boards, industrial control panels and electrical enclosures.
Trusted by Electrical Professionals Worldwide
ABB S300P miniature circuit breakers are trusted by electrical engineers, panel builders and OEM manufacturers worldwide for delivering dependable circuit protection, exceptional performance and long-term reliability.
