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2CDS383103R0257 ABB S303P-K1.6NA Miniature Circuit Breaker – 3+NP – K – 1.6 A
ABB S303P-K1.6NA miniature circuit breaker with a 1.6 A rating, Type K tripping characteristic, 3P+N configuration and 25 kA breaking capacity for industrial electrical protection.
£136.98
Why Choose the ABB 2CDS383103R0257 S303P-K1.6NA Miniature Circuit Breaker?
The ABB 2CDS383103R0257, also known as the S303P-K1.6NA, is a premium miniature circuit breaker (MCB) engineered to provide dependable protection against overloads and short circuits in demanding industrial electrical installations. As part of the proven ABB S300P System pro M compact range, it delivers outstanding fault-clearing performance, high reliability and compliance with international IEC and UL standards.
Featuring a 3P+N configuration, the S303P-K1.6NA protects all three phase conductors while incorporating a switched neutral pole. Its Type K tripping characteristic is specifically designed for circuits with high inrush currents, making it ideal for motors, transformers, contactors, solenoids and other inductive industrial loads.
With a rated current of 1.6 A, a maximum operating voltage of 415 V AC, and a 25 kA rated short-circuit breaking capacity (100 kA ultimate breaking capacity), the ABB S303P-K1.6NA provides exceptional protection for industrial control panels, switchboards, OEM machinery and automation systems.
Key Advantages
- Premium ABB miniature circuit breaker for industrial electrical protection.
- 1.6 A rated current with Type K tripping characteristic.
- 3P+N configuration with three protected poles and switched neutral.
- 25 kA rated short-circuit breaking capacity.
- Designed for circuits with high motor and transformer starting currents.
- Compact DIN rail installation for industrial control panels.
Key Features
- ABB S300P System pro M compact range.
- 1.6 A rated operational current.
- Type K tripping characteristic.
- Three protected poles with switched neutral.
- 25 kA rated breaking capacity (Icn).
- 100 kA ultimate breaking capacity (Icu).
- Suitable for AC and DC applications.
- Top or bottom supply connection.
- DIN rail mounting.
Reliable Protection for High Inrush Industrial Loads
The ABB S303P-K1.6NA combines thermal overload protection with instantaneous magnetic short-circuit protection to safeguard industrial equipment, cabling and distribution systems. This dual protection minimises downtime while improving electrical safety and equipment longevity.
Its Type K characteristic allows significantly higher transient starting currents than conventional Type B or Type C breakers, making it particularly suitable for motor circuits, transformers, magnetic coils and industrial automation equipment where nuisance tripping must be avoided.
Typical Applications
- Industrial motor control circuits.
- Transformer protection.
- Automation and PLC panels.
- Industrial machinery.
- OEM equipment.
- Electrical distribution boards.
Technical Specifications
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| Breaking Capacity | 25 kA | |
|---|---|---|
| Current | 1.6 A | |
| Phase | Three Phase | |
| Poles | 3-pole + N | |
| Device Type | MCB | |
| Trip Curve | K curve | |
| Manufacturer | ABB | |
| Series | S300P System pro M compact | |
| Model | S303P-K1.6NA | |
| Manufacturer Part Number | 2CDS383103R0257 | |
| Product Type | Miniature Circuit Breaker (MCB) | |
| Rated Current | 1.6 A | |
| Tripping Characteristic | Type K | |
| Pole Configuration | 3P+N | |
| Protected Poles | 3 | |
| Rated Voltage | Up to 415 V AC | |
| Maximum Operating Voltage | 480Y/277 V AC, 125 V DC | |
| Voltage Type | AC/DC | |
| Frequency | 50 / 60 Hz | |
| Rated Short-Circuit Breaking Capacity (Icn) | 25 kA | |
| Ultimate Breaking Capacity (Icu) | 100 kA | |
| Rated Insulation Voltage (Ui) | 500 V | |
| Impulse Withstand Voltage (Uimp) | 6 kV | |
| Protection Rating | IP20 | |
| Terminal Capacity | 0.75–35 mm² rigid, 0.75–25 mm² flexible | |
| Mounting | DIN Rail | |
| Operating Temperature | -40°C to +70°C | |
| Dimensions (H × W × D) | Approx. 88 × 70 × 69 mm | |
| Weight | Approx. 0.496 kg | |
| EAN | 4016779077149 | |
| HS Code | 85362010 | |
| Country of Manufacture | Germany |
Frequently Asked Questions
What is the ABB 2CDS383103R0257 used for?
It protects three-phase industrial electrical circuits against overloads and short circuits, particularly those supplying motors, transformers and other inductive equipment.
What is the rated current of the S303P-K1.6NA?
The ABB S303P-K1.6NA has a rated operational current of 1.6 A.
What does the Type K tripping characteristic provide?
Type K circuit breakers tolerate higher inrush currents than standard breakers while still providing rapid protection during genuine fault conditions.
What is the short-circuit breaking capacity?
The breaker provides a rated short-circuit breaking capacity of 25 kA with an ultimate breaking capacity of 100 kA.
How is the ABB S303P-K1.6NA installed?
It is designed for installation on a standard DIN rail inside industrial switchboards, control panels and electrical distribution boards.
Trusted by Electrical Professionals Worldwide
ABB S300P miniature circuit breakers are trusted by industrial engineers, machine builders and panel manufacturers worldwide for dependable overload and short-circuit protection in demanding electrical applications.
