2CSR255180R2205 ABB DS201 B20 A100 RCBO 1P+N 20A Type A 100mA 6kA

Why Choose the ABB DS201 B20 A100 RCBO?

The ABB DS201 B20 A100 is a compact residual current circuit breaker with overcurrent protection (RCBO) designed to protect single-phase circuits against overloads, short circuits and residual earth fault currents. As part of the ABB DS200 / DS201 RCBO range, it combines residual current and overcurrent protection in one modular protective device.

This RCBO provides a 20 A rated current, B tripping characteristic and 100 mA Type A residual current sensitivity. Type A residual current protection detects sinusoidal AC and pulsating DC residual currents, while the B characteristic is suited to circuits with relatively low inrush currents.

With a 1P+N configuration and 6 kA rated short-circuit breaking capacity, the DS201 B20 A100 provides combined circuit and residual current protection in a compact DIN-rail format. ABB order code 2CSR255180R2205 identifies this specific 20 A, B-curve, Type A, 100 mA version.

Key Advantages

• Combines residual current, overload and short-circuit protection in one device.
• 20 A rated current for single-phase electrical circuits.
• 100 mA rated residual operating current.
• Type A residual current detection for sinusoidal AC and pulsating DC residual fault currents.
• B tripping characteristic suited to loads with relatively low inrush currents.
• 6 kA rated short-circuit breaking capacity.
• Compact 1P+N DIN-rail design for distribution boards and control panels.

Key Features

• ABB DS201 RCBO series.
• 20 A nominal current.
• B-curve tripping characteristic.
• Type A residual current protection.
• 100 mA rated residual operating current.
• 1P+N pole configuration.
• 6 kA rated short-circuit breaking capacity.
• Integrated overload, short-circuit and residual current protection.
• Modular construction for DIN-rail electrical distribution systems.

Combined Residual Current and Overcurrent Protection

RCBOs such as the ABB DS201 combine the functions of a miniature circuit breaker and a residual current protective device. The DS201 B20 A100 therefore protects the connected circuit against overload and short-circuit currents while also disconnecting the supply when residual current reaches the device's operating threshold.

The Type A characteristic enables detection of sinusoidal alternating and pulsating direct residual currents. Combined with its 100 mA sensitivity, B tripping characteristic and compact 1P+N construction, the DS201 B20 A100 provides coordinated protection for suitable residential, commercial and industrial electrical circuits.

Typical Applications

• Single-phase electrical distribution circuits.
• Residential and commercial electrical installations.
• Lighting and building-services circuits.
• Control and auxiliary circuits.
• Circuits supplying general electrical loads with relatively low inrush currents.
• Industrial control panels and distribution boards.