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2CDS383103R0217 ABB S303P-K1NA Miniature Circuit Breaker – 3+NP – K – 1 A
ABB S303P-K1NA industrial miniature circuit breaker with a 1 A rating, Type K tripping characteristic, 3P+N configuration and 25 kA short-circuit breaking capacity.
£136.98
Why Choose the ABB 2CDS383103R0217 S303P-K1NA Miniature Circuit Breaker?
The ABB 2CDS383103R0217, also known as the S303P-K1NA, is a high-performance miniature circuit breaker (MCB) developed to protect industrial electrical installations against overloads and short circuits. Part of the proven ABB S300P System pro M compact range, it combines a high breaking capacity with compact DIN rail dimensions and dependable long-term operation.
Featuring a 3P+N configuration, the S303P-K1NA protects all three phase conductors and incorporates a switched neutral pole. Its Type K tripping characteristic is designed for circuits with elevated starting currents, making the breaker particularly suitable for motors, transformers, solenoids, contactors and other inductive equipment.
With a rated current of 1 A, a rated operating voltage of up to 415 V AC and a 25 kA short-circuit breaking capacity, the ABB S303P-K1NA offers robust circuit protection for industrial control panels, switchboards, machinery and automation systems. Supply can be connected from the top or bottom, helping simplify panel design and installation.
Key Advantages
- High-performance ABB miniature circuit breaker for industrial applications.
- 1 A rated current with Type K tripping characteristic.
- 3P+N configuration with three protected poles and switched neutral.
- 25 kA short-circuit breaking capacity.
- Suitable for circuits with high motor or transformer starting currents.
- Compact DIN rail design for efficient panel installation.
Key Features
- ABB S300P System pro M compact series.
- 1 A rated operational current.
- Type K instantaneous tripping characteristic.
- Three protected phase poles plus switched neutral.
- 25 kA rated short-circuit breaking capacity.
- Thermal overload and electromagnetic short-circuit protection.
- Top or bottom supply connection.
- Fail-safe terminals help reduce incorrect conductor insertion.
- DIN rail mounting for industrial control and distribution panels.
Reliable Protection for Inductive Industrial Loads
The ABB S303P-K1NA uses a delayed thermal mechanism to protect against sustained overload conditions and an electromagnetic mechanism to disconnect the circuit rapidly during a short circuit. This dual protection helps safeguard cables, machinery and connected equipment while reducing the risk of electrical damage and unplanned downtime.
Its Type K characteristic permits higher short-duration starting currents than Type B or Type C breakers, reducing nuisance tripping when inductive equipment is energised. This makes the S303P-K1NA a suitable choice for specialised low-current motor, transformer and control circuits.
Typical Applications
- Industrial motor control circuits.
- Transformer protection circuits.
- Solenoid and contactor circuits.
- Industrial automation systems.
- Machine control panels.
- OEM machinery and production equipment.
Technical Specifications
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| Current | 1 A | |
|---|---|---|
| Phase | Three Phase | |
| Poles | 3-pole + N | |
| Device Type | MCB | |
| Trip Curve | K curve | |
| Breaking Capacity | 25 kA | |
| Manufacturer | ABB | |
| Series | S300P System pro M compact | |
| Model | S303P-K1NA | |
| Manufacturer Part Number | 2CDS383103R0217 | |
| Product Type | Miniature Circuit Breaker (MCB) | |
| Rated Current | 1 A | |
| Tripping Characteristic | Type K | |
| Pole Configuration | 3P+N | |
| Protected Poles | 3 | |
| Rated Operating Voltage | Up to 415 V AC | |
| Frequency | 50 / 60 Hz | |
| Rated Short-Circuit Breaking Capacity | 25 kA | |
| Rated Insulation Voltage | 500 V | |
| Impulse Withstand Voltage | 6 kV | |
| Protection Rating | IP20 at terminals | |
| Terminal Capacity | 0.75–35 mm² | |
| Electrical Endurance | Up to 20,000 operating cycles | |
| Mounting Type | DIN rail | |
| Supply Connection | Top or bottom | |
| Module Width | 4 modules | |
| Dimensions (H × W × D) | Approx. 88 × 70 × 69 mm | |
| Weight | Approx. 0.496 kg | |
| EAN | 4016779077194 | |
| HS Code | 85362010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB 2CDS383103R0217 used for?
It protects three-phase industrial circuits against overloads and short circuits, particularly circuits supplying motors, transformers and other inductive loads.
What is the rated current of the S303P-K1NA?
The ABB S303P-K1NA has a rated operational current of 1 A.
What does the Type K tripping characteristic mean?
A Type K characteristic allows the circuit breaker to tolerate relatively high starting currents while still providing rapid short-circuit protection, making it suitable for inductive equipment.
What is the breaking capacity of the S303P-K1NA?
The ABB S303P-K1NA has a rated short-circuit breaking capacity of 25 kA.
How is the ABB S303P-K1NA installed?
It is mounted on a standard DIN rail inside an industrial control panel, switchboard or electrical distribution enclosure.
Trusted by Electrical Professionals Worldwide
ABB S300P miniature circuit breakers are trusted by industrial engineers, panel builders and OEM manufacturers for dependable overload and short-circuit protection in demanding control and power distribution applications.
