S-ARC1 M C20 Arc Fault Detection Device (AFDD) with MCB – 1P+N – C – 20 A – 10 kA

Why Choose the ABB S-ARC1 M C20 Arc Fault Detection Device?

The ABB S-ARC1 M C20 is a compact and reliable 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 arc fault detection and overcurrent protection in a space-saving two-module device for residential, commercial and other building electrical installations.

The S-ARC1 M C20 monitors the electrical circuit for characteristics associated with hazardous arc faults and disconnects the affected circuit when necessary. Its integrated MCB provides conventional overload and short-circuit protection, allowing multiple protective functions to be incorporated within a single DIN rail device and helping simplify electrical distribution-board design.

With a rated current of 20 A, a C tripping characteristic and a 10 kA ultimate short-circuit breaking capacity, the S-ARC1 M C20 is suitable for circuits where moderate starting or inrush currents may occur. It operates at 230–240 V AC and its compact 1P+N configuration occupies only two modules within the distribution board.

Key Advantages

• Combines arc fault detection and miniature circuit breaker protection in one device.
• 20 A rated current with C tripping characteristic.
• 10 kA ultimate short-circuit breaking capacity for robust circuit protection.
• Detects dangerous electrical arc faults that can increase the risk of electrically caused fires.
• Integrated 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 low-voltage electrical distribution systems.

Key Features

• ABB S-ARC1 M series AFDD with integrated MCB.
• 20 A rated current.
• C tripping characteristic.
• 10 kA ultimate short-circuit breaking capacity.
• 7.5 kA service short-circuit breaking capacity.
• 230–240 V AC rated operating voltage.
• 50–60 Hz rated frequency.
• 1P+N configuration with one protected pole.
• Red ON and green OFF contact position indication.
• Compact two-module format for DIN rail distribution boards.

Reliable Arc Fault and Circuit Protection

Arc faults can develop as a result of damaged conductors, deteriorated insulation, loose electrical connections and other electrical 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 C20 therefore provides arc fault, overload and short-circuit protection within a compact two-module enclosure, helping simplify modern electrical distribution-board design while providing enhanced protection against electrically induced fires.

Typical Applications

• Residential electrical distribution boards.
• Commercial buildings and offices.
• Electrical circuits requiring enhanced protection against arc faults.
• Circuits supplying equipment with moderate starting or inrush currents.
• Fixed-equipment and suitable final circuits.
• Low-voltage distribution systems requiring 20 A C-curve circuit protection.