ABB 2CDS381001R0578 S301P-Z50 single-pole miniature circuit breaker with 50 A rated current, Type Z tripping characteristic and 25 kA breaking capacity for industrial and electronic circuit protection.
£67.61
The ABB 2CDS381001R0578, also known as the ABB S301P-Z50, is a premium miniature circuit breaker (MCB) from the ABB System pro M compact S300P series. Designed to provide dependable protection against overloads and short circuits, it is ideal for industrial control systems, electrical distribution panels and applications requiring highly sensitive circuit protection.
Manufactured to internationally recognised IEC and UL standards, the S301P-Z50 delivers reliable operation, exceptional fault interruption capability and long service life. Its compact modular design allows fast DIN rail installation while remaining fully compatible with ABB's extensive range of System pro M compact accessories.
With a 50 A rated current, a Type Z tripping characteristic and a 25 kA ultimate breaking capacity, this circuit breaker is particularly suited to protecting sensitive electronic equipment, semiconductor devices, PLCs and control circuits where rapid fault response is essential.
The ABB S301P-Z50 automatically disconnects electrical circuits during overload and short-circuit conditions, helping to protect valuable equipment, minimise downtime and improve installation safety. Its highly sensitive Type Z tripping characteristic is particularly effective for protecting electronic devices and control circuits with low fault current tolerances.
Its high breaking capacity and robust construction make it suitable for demanding industrial environments where dependable protection and long-term reliability are critical.
| Current | 50 A |
|---|---|
| Phase | Single Phase |
| Manufacturer | ABB |
| Series | System pro M compact S300P |
| Extended product type | S301P-Z50 |
| Model | 2CDS381001R0578 |
| Product type | Miniature Circuit Breaker (MCB) |
| Number of poles | 1 |
| Protected poles | 1 |
| Rated current | 50 A |
| Tripping characteristic | Type Z |
| Maximum operating voltage | 480Y/277 V AC, 125 V DC |
| Rated frequency | 50 / 60 Hz |
| Ultimate breaking capacity (Icu) | 25 kA |
| Service breaking capacity (Ics) | 7.5 kA |
| Rated insulation voltage | 500 V |
| Impulse withstand voltage | 6 kV |
| Protection rating | IP20 (IP40 when installed in an enclosure) |
| Mounting type | 35 mm DIN rail |
| Dimensions (H × W × D) | 88 × 17.5 × 67.6 mm |
| Weight | Approx. 0.124 kg |
| Standards | IEC/EN 60947-2, UL 1077, CSA 22.2 No. 235 |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
It protects industrial electrical installations and sensitive electronic equipment from overloads and short circuits.
The ABB S301P-Z50 has a 50 A rated current.
Type Z circuit breakers provide very fast tripping at relatively low fault currents, making them suitable for protecting sensitive electronic equipment and control circuits.
The device provides an ultimate short-circuit breaking capacity of 25 kA with a rated service breaking capacity of 7.5 kA.
The circuit breaker is designed for simple installation onto a standard 35 mm DIN rail inside electrical distribution boards and control panels.
ABB System pro M compact miniature circuit breakers are trusted by panel builders, electrical contractors and industrial engineers for their exceptional reliability, high fault protection capability and compliance with international standards.
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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...