2CSR275180R3405 ABB DS201MB40A300 DS201 M B40 A300 RCBO 40A 300mA Type A

Why Choose the ABB DS201MB40A300 RCBO?

The ABB DS201MB40A300, manufacturer type DS201 M B40 A300, is a compact and highly reliable 1P+N 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 advanced ABB DS201 M / System pro M compact series, it combines residual current and overcurrent protection in a compact DIN-rail device.

This Type A RCBO detects sinusoidal alternating and pulsating DC residual currents, while its B-curve overcurrent characteristic is suited to circuits with relatively low starting and inrush currents. Combining these protective functions in one device helps simplify electrical distribution design while providing dedicated protection and isolation for individual circuits.

With a rated current of 40 A, a rated residual operating current of 300 mA and a rated short-circuit breaking capacity of 10 kA, the DS201 M B40 A300 is suitable for residential, commercial and industrial electrical installations. Its 1P+N configuration makes it a practical solution for single-phase distribution systems requiring combined overcurrent and residual current protection.

Key Advantages

• Combined residual current and overcurrent protection in one compact device.
• 40 A rated current with B tripping characteristic.
• 300 mA Type A residual current protection.
• 10 kA rated short-circuit breaking capacity.
• 1P+N configuration for single-phase electrical circuits.
• Compact DIN-rail design simplifies installation in modular distribution boards.

Key Features

• ABB DS201 M RCBO series.
• 40 A rated current.
• B-curve tripping characteristic.
• 300 mA rated residual operating current.
• Type A residual current characteristic.
• 1P+N pole configuration.
• 10 kA rated short-circuit breaking capacity.
• Combined protection against overload, short-circuit and residual currents.
• Test pushbutton for checking residual current protection functionality.
• DIN-rail mounting for integration into modular distribution systems.

Reliable Combined Circuit Protection

RCBOs combine the functions of a miniature circuit breaker and residual current device in a single protective component. The ABB DS201 M series protects circuits against overload and short-circuit currents while also detecting residual earth fault currents, helping provide comprehensive protection within compact electrical distribution systems.

The Type A characteristic enables detection of sinusoidal AC and pulsating DC residual currents. Together with the B-curve overcurrent characteristic and 300 mA residual current sensitivity, the DS201 M B40 A300 provides combined protection for suitable residential, commercial and industrial single-phase electrical circuits.

Typical Applications

• Residential electrical distribution boards.
• Commercial building electrical distribution.
• Industrial control and distribution panels.
• Single-phase equipment circuits.
• Heating and resistive-load circuits.
• DIN-rail distribution systems requiring combined residual current and overcurrent protection.