ABB S301P-B10NA 1P+N miniature circuit breaker with 10 A rated current, Type B tripping characteristic and 25 kA short-circuit breaking capacity.
£59.49
The ABB 2CDS381103R0105, designated S301P-B10NA, is a premium 1P+N miniature circuit breaker (MCB) from the ABB System pro M compact S300P range. Designed for industrial and commercial electrical installations, it provides dependable protection against overloads and short circuits whilst simultaneously switching the neutral conductor for improved circuit isolation.
Combining thermal overload protection with rapid electromagnetic short-circuit tripping, the S301P-B10NA delivers reliable circuit protection whilst incorporating ABB features such as fail-safe terminals, an integrated trip indicator, contact position indication and a dual DIN rail release mechanism to simplify installation and maintenance.
With a 10 A rated current, a Type B tripping characteristic and a 25 kA rated short-circuit breaking capacity, this circuit breaker is particularly suited to protecting lighting circuits, heating systems, instrumentation, control equipment and other circuits with low inrush currents.
The ABB S301P-B10NA automatically disconnects circuits during overload and short-circuit conditions, protecting wiring, switchgear and connected equipment from electrical damage. Simultaneous neutral switching improves circuit isolation during maintenance and servicing.
Its Type B tripping characteristic is intended for circuits with relatively low starting currents, making it an excellent choice for lighting installations, electric heating, instrumentation, control systems and general-purpose distribution circuits where rapid fault protection is required.
| Current | 10 A |
|---|---|
| Phase | Single Phase |
| Manufacturer | ABB |
| Series | System pro M compact S300P |
| Extended Product Type | S301P-B10NA |
| Manufacturer Part Number | 2CDS381103R0105 |
| Product Type | Miniature Circuit Breaker (MCB) |
| Pole Configuration | 1P+N |
| Protected Poles | 1 |
| Rated Current | 10 A |
| Tripping Characteristic | Type B |
| Magnetic Tripping Range | 3–5 × In |
| Rated Operational Voltage | 240 V AC / 72 V DC |
| Rated Frequency | 50 / 60 Hz and DC |
| Rated Short-Circuit Breaking Capacity (Icn) | 25 kA |
| Rated Service Breaking Capacity (Ics) | 12.5 kA |
| Rated Insulation Voltage (Ui) | 500 V |
| Rated Impulse Withstand Voltage (Uimp) | 6 kV |
| Minimum Operating Voltage | 12 V AC/DC |
| Overvoltage Category | IV |
| Pollution Degree | 3 |
| Protection Rating | IP20 (IP40 when installed inside a suitable enclosure) |
| Terminal Capacity | 0.75–35 mm² rigid, 0.75–25 mm² flexible |
| Mechanical Endurance | 20,000 operations |
| Operating Temperature | -40°C to +70°C |
| Mounting | 35 mm DIN rail |
| Dimensions (H × W × D) | Approx. 88 × 35 × 69 mm |
| Weight | Approx. 0.248 kg |
| EAN | 4016779079730 |
| Standards | IEC/EN 60898-1, IEC/EN 60947-2, UL 1077 and CSA 22.2 No. 235 |
| HS Code | 85362010 |
| Country of Manufacture | Germany |
It protects industrial and commercial electrical circuits against overloads and short circuits whilst simultaneously switching the neutral conductor.
The ABB S301P-B10NA has a 10 A rated current.
Type B miniature circuit breakers trip magnetically at approximately three to five times their rated current, making them ideal for resistive loads and circuits with relatively low inrush currents.
The device provides a 25 kA rated short-circuit breaking capacity and a 12.5 kA rated service breaking capacity.
A 1P+N device protects the live conductor whilst simultaneously switching the neutral conductor, providing improved electrical isolation during maintenance and servicing.
ABB System pro M compact miniature circuit breakers are trusted by electrical engineers, panel builders and OEM manufacturers worldwide for their high fault-breaking performance, dependable operation and compliance with international electrical 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...