Why Choose the ABB S-ARC1 M B40 Arc Fault Detection Device?
The ABB S-ARC1 M B40 is a compact arc fault detection device (AFDD) with integrated miniature circuit breaker (MCB) designed to protect low-voltage electrical circuits against dangerous arc faults, overloads and short circuits. As part of the ABB S-ARC1 M series, it combines advanced arc fault detection with conventional overcurrent protection in a space-saving two-module device for residential, commercial and other building electrical installations.
The S-ARC1 M B40 monitors the electrical circuit for characteristics associated with hazardous series, parallel and earth arc faults and disconnects the affected circuit when a dangerous condition is detected. Its integrated thermal-magnetic MCB also provides overload and short-circuit protection, reducing the number of separate protective devices required within the distribution board.
With a rated current of 40 A, a B tripping characteristic and a 10 kA rated short-circuit breaking capacity, the S-ARC1 M B40 provides robust protection for suitable final circuits. Its 1P+N configuration, compact 35 mm width and standard DIN rail mounting make it straightforward to integrate into modern low-voltage distribution systems.
Key Advantages
- Combines arc fault detection and miniature circuit breaker protection in one device.
- 40 A rated current with B tripping characteristic.
- 10 kA short-circuit breaking capacity for robust circuit protection.
- Provides protection against series, parallel and earth arc faults.
- Integrated thermal-magnetic MCB provides overload and short-circuit protection.
- Compact 1P+N two-module design helps conserve distribution-board space.
- DIN rail mounting provides straightforward integration into electrical distribution systems.
Key Features
- ABB S-ARC1 M series AFDD with integrated MCB.
- 40 A rated current.
- B tripping characteristic.
- 10 kA rated short-circuit breaking capacity.
- 230 V AC rated voltage.
- 1P+N configuration.
- Thermal-magnetic overcurrent tripping mechanism.
- Protection against arc faults, overloads and short circuits.
- Compact two-module design measuring only 35 mm wide.
- Compatible with ABB System pro M compact accessories.
Reliable Arc Fault and Circuit Protection
Arc faults can develop as a result of damaged conductors, deteriorated insulation, loose electrical connections and other installation faults. Because some dangerous arcing conditions may not draw sufficient current to operate conventional overcurrent protection, an AFDD monitors the circuit for electrical characteristics associated with hazardous arcs and disconnects the affected circuit when required.
The ABB S-ARC1 M series combines arc fault detection technology with an integrated miniature circuit breaker. The S-ARC1 M B40 therefore provides protection against series, parallel and earth arc faults as well as overloads and short circuits within a compact two-module enclosure, helping simplify modern electrical distribution-board design.
Typical Applications
- Residential electrical distribution boards.
- Commercial buildings and offices.
- Electrical circuits requiring enhanced protection against arc faults.
- Higher-current final circuits requiring 40 A B-curve protection.
- Circuits supplying fixed electrical equipment.
- Buildings containing valuable or difficult-to-replace assets.
