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2CCS863002R0577 ABB S803S-K50-R High Performance MCB 50kA 3P Type K 50A
ABB S803S-K50-R is a 50 A three-pole Type K high-performance miniature circuit breaker with up to 50 kA ultimate short-circuit breaking capacity for demanding industrial circuit protection.
£201.52
Why Choose the ABB S803S-K50-R High Performance MCB?
The ABB S803S-K50-R is a high-performance three-pole miniature circuit breaker (MCB) designed to provide reliable overload and short-circuit protection for demanding industrial electrical circuits. Part of the established ABB S800S high-performance MCB series, this model combines a 50 A rated current, K tripping characteristic and high short-circuit breaking capacity for robust protection of equipment and distribution systems.
The S803S-K50-R incorporates thermal and electromagnetic tripping mechanisms to protect circuits against sustained overloads and short-circuit faults. Its K characteristic is particularly suited to circuits supplying motors, transformers and other inductive equipment where higher starting currents must be accommodated without unnecessary tripping.
With three protected poles and a rated ultimate short-circuit breaking capacity of up to 50 kA at 240/415 V AC according to IEC 60947-2, the S803S-K50-R is designed for installations where high prospective fault currents can occur. The ring-terminal connection version is identified by the -R suffix, while the ABB order code for this exact device is 2CCS863002R0577.
Key Advantages
- High-performance three-pole miniature circuit breaker for demanding installations.
- 50 A rated current for three-phase circuit protection.
- K tripping characteristic suited to motors, transformers and inductive loads.
- Rated ultimate short-circuit breaking capacity up to 50 kA at 240/415 V AC.
- Thermal and electromagnetic tripping provides overload and short-circuit protection.
- Ring-terminal connection design provides secure electrical termination.
- DIN-rail mounting enables straightforward installation in distribution and control panels.
Key Features
- ABB S800S high-performance MCB series.
- 3-pole configuration with all three poles protected.
- 50 A rated current.
- Type K / K-characteristic tripping curve.
- Up to 50 kA ultimate breaking capacity at 240/415 V AC.
- 690 V AC rated insulation voltage.
- 8 kV rated impulse withstand voltage.
- 50–60 Hz operating frequency.
- IP20 protection rating.
- ON / OFF / TRIP contact-position indication.
- Suitable for 35 mm DIN-rail mounting.
Reliable Protection for Motor and Inductive Circuits
The ABB S803S-K50-R combines thermal overload protection with fast electromagnetic short-circuit protection. The thermal mechanism responds to sustained excessive current, while the magnetic trip mechanism rapidly disconnects the circuit during severe fault conditions, helping protect cables, machinery and connected electrical equipment.
The K tripping characteristic is designed to accommodate the starting currents associated with motors, transformers and other inductive loads while maintaining effective fault protection. Combined with the high breaking capacity of the S800S platform, this makes the S803S-K50-R particularly suitable for industrial installations where both dependable protection and tolerance of equipment starting currents are required.
Typical Applications
- Industrial three-phase electrical distribution systems.
- Motor supply and machinery circuits.
- Transformer and inductive-load protection.
- Industrial control panels and switchboards.
- Manufacturing and production equipment.
- Automation and material-handling systems.
Technical Specifications
| Series | S800S |
|---|---|
| ABB order code | 2CCS863002R0577 |
| Product type | High-performance miniature circuit breaker (MCB) |
| Number of poles | 3 |
| Protected poles | 3 |
| Rated current | 50 A |
| Tripping characteristic | K |
| Rated ultimate short-circuit breaking capacity | 50 kA at 240/415 V AC |
| Rated short-circuit capacity | 25 kA at 400 V AC |
| Rated insulation voltage | 690 V AC |
| Rated impulse withstand voltage | 8 kV |
| Frequency | 50–60 Hz |
| Protection rating | IP20 |
| Ambient operating temperature | -25 to +60 °C |
| Energy limiting class | 3 |
| Connection type | Ring-terminal connection |
| Mounting | DIN rail |
| Standards | IEC/EN 60947-2, IEC/EN 60898-1 |
Frequently Asked Questions
What is the ABB S803S-K50-R used for?
The S803S-K50-R is a high-performance three-pole MCB used to protect electrical circuits against overload and short-circuit currents, including industrial circuits supplying motors and other inductive equipment.
What is the current rating of the S803S-K50-R?
The ABB S803S-K50-R has a rated current of 50 A.
What does the K characteristic mean?
The K tripping characteristic is designed to accommodate comparatively high starting currents, making the breaker well suited to motors, transformers and other inductive loads.
What is the breaking capacity of the S803S-K50-R?
The breaker has a rated ultimate short-circuit breaking capacity of up to 50 kA at 240/415 V AC according to IEC 60947-2.
What is the ABB order code for the S803S-K50-R?
The ABB order code for the S803S-K50-R is 2CCS863002R0577.
Trusted High-Performance Protection from ABB
ABB S800S high-performance miniature circuit breakers provide dependable overload and short-circuit protection for demanding industrial and commercial electrical systems where robust performance and high breaking capacity are required.
