Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
2CCS894001R0205 ABB S804N-B20 MCB 36 kA 4P Type B 20 A
ABB S804N-B20 is a 20 A four-pole Type B high-performance miniature circuit breaker with a 36 kA short-circuit breaking capacity for demanding commercial and industrial circuit protection.
£197.76
Why Choose the ABB S804N-B20 Miniature Circuit Breaker?
The ABB S804N-B20 is a high-performance 4-pole miniature circuit breaker (MCB) designed to protect electrical circuits against overloads and short circuits in demanding commercial and industrial installations. Part of the ABB S800N high-performance circuit breaker series, it combines a rated current of 20 A with a high 36 kA short-circuit breaking capacity.
Featuring a Type B tripping characteristic, the S804N-B20 is suited to circuits with relatively low normal starting or inrush currents, including appropriate resistive and general-purpose loads. Its thermal overload and electromagnetic short-circuit protection provide dependable automatic disconnection, while the current-limiting S800N design helps reduce the energy passed through during severe fault conditions.
The S804N-B20 provides four protected poles, making it suitable for four-pole and three-phase-plus-neutral circuit arrangements requiring coordinated protection and switching. Its modular DIN-rail construction and compatibility with the ABB S800 platform support straightforward integration into distribution boards, machinery panels and industrial control systems.
Key Advantages
- High 36 kA short-circuit breaking capacity for demanding electrical installations.
- 20 A rated current for four-pole commercial and industrial circuits.
- Type B tripping characteristic suited to circuits with relatively low inrush currents.
- 4-pole configuration for coordinated protection and switching across four poles.
- Thermal overload and electromagnetic short-circuit protection.
- Current-limiting high-performance construction helps reduce fault energy within the protected installation.
Key Features
- ABB S800N high-performance MCB series.
- 4-pole (4P) circuit breaker configuration.
- 20 A rated current.
- B-curve tripping characteristic.
- 36 kA high breaking capacity.
- Thermal protection against sustained overload currents.
- Electromagnetic protection for rapid response to short-circuit faults.
- Current-limiting circuit breaker construction.
- DIN-rail mounting for modular electrical assemblies.
- Compatible with accessories from the ABB S800 platform.
Reliable Four-Pole Circuit Protection
High-performance miniature circuit breakers such as the ABB S804N-B20 automatically disconnect electrical circuits when excessive current results from an overload or short circuit. Thermal tripping responds to sustained overload conditions, while electromagnetic tripping provides rapid interruption during severe short-circuit faults, helping protect conductors and connected equipment.
The Type B characteristic is designed for circuits where normal loads have relatively low temporary starting currents. Combined with four protected poles, high breaking capacity and the current-limiting performance of the S800N platform, the S804N-B20 provides robust protection for demanding four-pole commercial and industrial distribution systems.
Typical Applications
- Three-phase-plus-neutral industrial distribution circuits.
- Four-pole commercial and industrial distribution panels.
- Machinery and automation control cabinets.
- Resistive and general-purpose load circuits.
- Industrial control and auxiliary power systems.
- High fault-level installations requiring high-performance circuit protection.
Technical Specifications
| Series | S800N |
|---|---|
| ABB order code | 2CCS894001R0205 |
| Product type | High-performance miniature circuit breaker (MCB) |
| Number of poles | 4P |
| Number of protected poles | 4 |
| Rated current | 20 A |
| Tripping characteristic | Type B |
| Short-circuit breaking capacity | 36 kA |
| Rated frequency | 50/60 Hz |
| Protection function | Overload and short-circuit protection |
| Mounting type | DIN rail |
| Standards | IEC/EN 60947-2, IEC/EN 60898-1 |
| Product group | S800 / S800P / S750 MCB |
Frequently Asked Questions
What is the ABB S804N-B20 used for?
The ABB S804N-B20 protects four-pole electrical circuits against overloads and short circuits and is suited to demanding commercial and industrial applications where relatively low normal inrush currents are expected.
What is the rated current of the S804N-B20?
The S804N-B20 has a rated current of 20 A.
What is the breaking capacity of the ABB S804N-B20?
The S804N-B20 has a high short-circuit breaking capacity of 36 kA, making it suitable for installations where substantial prospective fault currents may occur.
What does the Type B characteristic mean?
The Type B tripping characteristic is intended for circuits with relatively low temporary starting or inrush currents, including appropriate resistive and general-purpose electrical loads.
How many poles does the ABB S804N-B20 have?
The S804N-B20 is a 4-pole circuit breaker with four protected poles, making it suitable for applications requiring coordinated protection and switching across four poles.
Trusted High-Performance Protection from ABB
ABB S800 high-performance miniature circuit breakers combine dependable overload and short-circuit protection with high breaking capacities, current-limiting performance and compact modular construction for demanding electrical installations.
