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2CDS381103R0277 ABB S301P-K2NA Miniature Circuit Breaker – 1+NP – K – 2 A
ABB S301P-K2NA miniature circuit breaker with a 2 A rated current, Type K tripping characteristic, 1P+N configuration and 25 kA breaking capacity for industrial motor, transformer and control circuits.
£62.75
Why Choose the ABB 2CDS381103R0277 S301P-K2NA Miniature Circuit Breaker?
The ABB 2CDS381103R0277, also known as the S301P-K2NA, is a high-performance miniature circuit breaker (MCB) designed to protect industrial electrical installations against overloads and short circuits. Part of the trusted ABB System pro M compact S300P series, it combines robust construction, compact dimensions and high fault-breaking performance for demanding power distribution and control applications.
Featuring a 2 A rated current, a Type K tripping characteristic and a high 25 kA short-circuit breaking capacity, the S301P-K2NA is particularly suitable for circuits supplying motors, transformers, solenoids, contactor coils and other inductive loads. Its Type K operating curve accommodates temporary start-up currents while maintaining dependable protection against sustained overloads and genuine fault conditions.
The 1P+N configuration switches the phase and neutral conductors together, supporting safe isolation and efficient circuit management. DIN rail mounting, fail-safe bi-directional terminals and compatibility with ABB System pro M compact accessories make this circuit breaker a practical choice for industrial panels, machinery and automation systems.
Key Advantages
- Dependable overload and short-circuit protection.
- 2 A rated current for low-current industrial circuits.
- Type K tripping characteristic for inductive loads and equipment with start-up currents.
- High 25 kA short-circuit breaking capacity.
- 1P+N configuration switches phase and neutral together.
- Compact construction helps maximise available panel space.
- Fail-safe terminals help prevent incorrect conductor insertion.
- Compatible with ABB System pro M compact accessories.
Key Features
- ABB System pro M compact S300P series.
- S301P-K2NA miniature circuit breaker.
- 2 A rated current.
- Type K tripping curve.
- 1 pole plus neutral configuration.
- 240 V AC rated operational voltage.
- Suitable for specified DC circuit applications.
- 25 kA breaking capacity.
- Thermal-magnetic overload and short-circuit protection.
- DIN rail mounting with fail-safe screw terminals.
Reliable Protection for Inductive Electrical Loads
The ABB S301P-K2NA uses coordinated thermal and electromagnetic release mechanisms to protect electrical circuits. The thermal release responds to prolonged overload conditions, while the magnetic release rapidly interrupts high short-circuit currents before they can cause extensive damage to cables, equipment or switchgear.
Its Type K tripping characteristic is optimised for equipment that draws a temporary inrush current during normal operation. This makes the circuit breaker particularly useful for motor control circuits, transformers and electromagnetic devices where a more sensitive breaker could trip unnecessarily during start-up.
Typical Applications
- Industrial motor control circuits.
- Control and isolation transformers.
- Contactors and solenoid-operated equipment.
- Machine control panels.
- Industrial automation systems.
- Electrical distribution boards.
- OEM machinery and production equipment.
- Commercial and infrastructure installations.
Technical Specifications
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| Current | 2 A | |
|---|---|---|
| Phase | Single Phase | |
| Poles | 1-pole + N | |
| Device Type | MCB | |
| Trip Curve | K curve | |
| Breaking Capacity | 25 kA | |
| Manufacturer | ABB | |
| Series | System pro M compact S300P | |
| Model | S301P-K2NA | |
| Product ID | 2CDS381103R0277 | |
| EAN | 4016779079525 | |
| Product type | Miniature circuit breaker (MCB) | |
| Rated current | 2 A | |
| Tripping characteristic | Type K | |
| Number of poles | 1P+N | |
| Neutral position | Right | |
| Rated operational voltage | 240 V AC | |
| Frequency | 50 / 60 Hz | |
| Rated short-circuit breaking capacity | 25 kA | |
| Rated insulation voltage | 500 V | |
| Rated impulse withstand voltage | 6 kV | |
| Release mechanism | Thermal-magnetic | |
| Protection rating | IP20; up to IP40 when installed in a suitable enclosure | |
| Mounting type | DIN rail mounting | |
| Terminal type | Fail-safe bi-directional screw terminals | |
| Maximum solid conductor capacity | 35 mm² | |
| Maximum stranded conductor capacity | 25 mm² | |
| Operating temperature | -40°C to +70°C | |
| Dimensions (H × W × D) | Approximately 88 × 35 × 69 mm | |
| Weight | Approximately 0.248 kg | |
| HS Code | 85362010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB 2CDS381103R0277 used for?
The ABB 2CDS381103R0277 protects industrial electrical circuits against overloads and short circuits. Its Type K tripping characteristic makes it particularly suitable for motors, transformers, solenoids and other inductive loads.
What is the rated current of the S301P-K2NA?
The ABB S301P-K2NA has a rated current of 2 A.
What does the Type K tripping characteristic mean?
A Type K circuit breaker accommodates temporary inrush currents from inductive equipment while providing rapid protection against sustained overloads and short circuits.
What is the breaking capacity of this circuit breaker?
The ABB S301P-K2NA provides a high rated short-circuit breaking capacity of 25 kA.
Does the ABB S301P-K2NA switch the neutral conductor?
Yes. Its 1P+N configuration switches the protected phase pole and the neutral pole together, with the neutral positioned on the right.
How is the ABB S301P-K2NA installed?
The circuit breaker mounts onto a standard DIN rail inside an electrical distribution board, switchboard or industrial control panel.
Trusted Industrial Protection from ABB
ABB System pro M compact S300P miniature circuit breakers deliver dependable overload and short-circuit protection for industrial machinery, automation equipment, commercial buildings and critical power-distribution systems.
