Why Choose the ABB S-ARC1 B40 Arc Fault Detection Device?
The ABB S-ARC1 B40 is a compact arc fault detection device (AFDD) with integrated miniature circuit breaker (MCB) designed to provide enhanced protection for single-phase final circuits. As part of the ABB S-ARC1 series, it combines arc fault detection with thermal-magnetic overload and short-circuit protection within a single two-module DIN rail device.
The S-ARC1 protects end-user circuits against earth, parallel and series arc faults as well as conventional overloads and short-circuit currents. By detecting potentially hazardous electrical arcing that conventional MCB protection alone may not identify, the device provides an additional level of protection against electrical faults associated with damaged conductors, deteriorated insulation and poor electrical connections.
With a rated current of 40 A, a B tripping characteristic and a rated operational voltage of 230–240 V AC, the S-ARC1 B40 is designed for 1P+N single-phase circuits. Its 6 kA short-circuit breaking capacity and compact two-module construction make it suitable for higher-current final circuits requiring combined arc fault, overload and short-circuit protection.
Key Advantages
- Combines arc fault detection and MCB protection in one compact device.
- 40 A rated current with B tripping characteristic.
- Protects against earth, parallel and series arc faults.
- Integrated thermal-magnetic protection against overloads and short circuits.
- 6 kA short-circuit breaking capacity.
- 1P+N configuration for single-phase final circuits.
- Top or bottom supply connection provides installation flexibility.
- Supports rigid, flexible and busbar conductor connections.
- Compact two-module design helps conserve distribution board space.
Key Features
- ABB S-ARC1 arc fault detection device series.
- 40 A rated current.
- B tripping characteristic.
- 1P+N configuration.
- 230–240 V AC rated operational voltage.
- 50 Hz rated frequency.
- 6 kA short-circuit breaking capacity.
- 500 V rated insulation voltage.
- 4 kV rated impulse withstand voltage.
- Protection against earth, parallel and series arc faults.
- Integrated thermal-magnetic MCB functionality.
- 6.2 W power loss at rated current.
- Overvoltage category III.
- Supply connection possible from top or bottom terminals.
- DIN rail mounting with screw terminals.
- Compact two-module construction.
Enhanced Arc Fault and Overcurrent Protection
Arc fault detection devices monitor electrical circuits for characteristic conditions associated with potentially dangerous electrical arcing. The ABB S-ARC1 is designed to protect against earth, parallel and series arc faults while its integrated miniature circuit breaker provides thermal-magnetic protection against overloads and short-circuit currents.
Combining AFDD and MCB functionality within a compact two-module device helps simplify distribution board design while providing protection against electrical faults that conventional MCBs alone are not designed to detect. The S-ARC1 series is designed for residential and commercial applications where enhanced protection of single-phase final circuits is required.
Typical Applications
- Residential electrical distribution boards.
- Commercial electrical distribution systems.
- Single-phase final circuits requiring enhanced arc fault protection.
- Circuits protected at 40 A requiring a B tripping characteristic.
- Compatible higher-current single-phase final circuits.
- Installations where enhanced protection against electrically initiated fires is required.
- Installations requiring combined arc fault, overload and short-circuit protection.
