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2CCS861001R0505 ABB S801S-B50 High Performance MCB 50kA 1P Type B 50A
ABB S801S-B50 high-performance single-pole Type B miniature circuit breaker with a 50 A rated current and up to 50 kA rated ultimate short-circuit breaking capacity for demanding electrical circuit protection.
£60.87
Why Choose the ABB S801S-B50 High Performance MCB?
The ABB S801S-B50 is a high-performance single-pole miniature circuit breaker (MCB) designed to provide reliable overload and short-circuit protection in demanding electrical installations. Part of the ABB S800S high-performance circuit breaker range, this current-limiting device combines a 50 A rated current, Type B tripping characteristic and high short-circuit breaking capability for residential, commercial and industrial applications.
The S801S-B50 uses two complementary tripping mechanisms: a thermal mechanism for overload protection and an electromagnetic mechanism for rapid short-circuit protection. Fast arc extinction and current-limiting operation help protect downstream equipment and electrical installations during fault conditions, while the compact DIN rail format supports straightforward integration into distribution and control equipment.
With a rated current of 50 A and a rated ultimate short-circuit breaking capacity of up to 50 kA at 240/415 V AC, the S801S-B50 is engineered for installations where a high fault-current capability is required. Its Type B characteristic, cage terminal design and compliance with IEC/EN 60898-1 and IEC/EN 60947-2 make it a versatile protective device for professional electrical systems.
Key Advantages
- High-performance single-pole miniature circuit breaker for overload and short-circuit protection.
- 50 A rated current for demanding electrical circuits.
- Type B tripping characteristic for rapid response to short-circuit currents.
- Rated ultimate short-circuit breaking capacity of up to 50 kA at 240/415 V AC.
- Current-limiting design with fast arc extinction for enhanced installation protection.
- Suitable for residential, commercial and industrial electrical applications.
Key Features
- ABB S800S high-performance MCB series.
- 1-pole configuration.
- 50 A rated current.
- Type B tripping characteristic.
- Thermal overload and electromagnetic short-circuit tripping mechanisms.
- Rated operational voltage of 230/400 V AC according to IEC 60898-1.
- Rated operational voltage of 400 V AC / 125 V DC according to IEC 60947-2.
- 690 V rated insulation voltage.
- 8 kV rated impulse withstand voltage.
- DIN rail mounting with cage / screw terminal connection.
High-Performance Circuit Protection
Miniature circuit breakers such as the ABB S801S-B50 automatically disconnect a circuit when excessive current occurs. Its thermal tripping mechanism responds to sustained overload conditions, while its electromagnetic mechanism provides rapid operation during short circuits, helping protect cables, equipment and electrical installations from damage.
The ABB S800S range is designed for applications requiring high breaking capacity in a compact modular format. The S801S-B50 combines current-limiting performance, fast arc extinction and internationally recognised standards compliance, making it suitable for distribution boards, industrial control systems and other installations with demanding prospective fault-current levels.
Typical Applications
- Industrial electrical distribution systems.
- Commercial distribution boards and switchgear.
- Machinery and industrial control panels.
- High fault-level electrical installations.
- Building services and infrastructure systems.
- Residential, commercial and industrial circuit protection.
Technical Specifications
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| Certification | UL 1077 | |
|---|---|---|
| Series | S800S | |
| Order code | 2CCS861001R0505 | |
| Product type | High-performance miniature circuit breaker (MCB) | |
| Number of poles | 1 | |
| Protected poles | 1 | |
| Rated current | 50 A | |
| Tripping characteristic | Type B | |
| Rated operational voltage | 230/400 V AC according to IEC 60898-1 | |
| Rated frequency | 50/60 Hz | |
| Rated insulation voltage | 690 V | |
| Rated impulse withstand voltage | 8 kV | |
| Rated ultimate short-circuit breaking capacity (Icu) | 50 kA at 240/415 V AC | |
| Rated short-circuit capacity | 25 kA at 230/400 V AC | |
| Power loss | 4.3 W per pole at rated operating conditions | |
| Protection rating | IP20 | |
| Pollution degree | 3 | |
| Operating temperature | -25 to +60 °C | |
| Terminal type | Cage / screw terminal | |
| Tightening torque | 3.5 N·m | |
| Mounting type | DIN rail | |
| Dimensions (H × W × D) | 95 × 27 × 82.5 mm | |
| Weight | approx. 245 g | |
| Standards | IEC/EN 60947-2, IEC/EN 60898-1, UL 1077 |
Frequently Asked Questions
What is the ABB S801S-B50 used for?
The ABB S801S-B50 is a high-performance miniature circuit breaker used to protect electrical circuits against overloads and short circuits in residential, commercial and industrial installations.
What is the current rating of the ABB S801S-B50?
The S801S-B50 has a rated current of 50 A and uses a Type B tripping characteristic.
What is the breaking capacity of the S801S-B50?
The S801S-B50 has a rated ultimate short-circuit breaking capacity of up to 50 kA at 240/415 V AC, with the applicable breaking capacity depending on operating voltage and standard.
What protection mechanisms does the S801S-B50 use?
The circuit breaker incorporates a thermal tripping mechanism for overload protection and an electromagnetic tripping mechanism for short-circuit protection.
Which standards does the ABB S801S-B50 comply with?
The S801S-B50 is designed in accordance with IEC/EN 60898-1, IEC/EN 60947-2 and UL 1077.
Trusted High-Performance Protection from ABB
ABB S800S high-performance circuit breakers provide reliable overload and short-circuit protection for demanding electrical installations, combining high breaking capacity, current-limiting performance and compact modular construction.
