2CSR255180R3207 ABB DS201K20A300 RCBO 1P+N Type A K20 300mA 6kA

Why Choose the ABB DS201K20A300 RCBO?

The ABB DS201K20A300 is a compact and reliable 1P+N residual current circuit breaker with overcurrent protection (RCBO) designed to protect single-phase electrical circuits against overloads, short circuits and residual earth fault currents. As part of the ABB DS201 series, it combines residual-current and overcurrent protection in a single DIN rail device for residential, commercial and industrial electrical installations.

This RCBO features a 20 A rated current, K tripping characteristic and Type A residual-current detection. Type A protection detects sinusoidal AC and pulsating DC residual currents, while the K characteristic is suited to circuits where connected equipment can produce higher starting currents.

With a rated residual operating current of 300 mA and a rated short-circuit capacity of 6 kA, the DS201K20A300 provides combined circuit and residual-current protection in a compact format. Its 1P+N configuration and DIN rail mounting support straightforward integration into electrical distribution boards and control panels.

Key Advantages

• Combined overcurrent and residual-current protection in one RCBO.
• 20 A rated current with K tripping characteristic.
• Type A residual-current detection for sinusoidal AC and pulsating DC fault currents.
• 300 mA rated residual operating current.
• 6 kA rated short-circuit capacity.
• Compact 1P+N design for DIN rail distribution boards.

Key Features

• ABB DS201 RCBO series.
• 20 A nominal current.
• K characteristic overcurrent protection.
• Type A residual-current protection.
• 300 mA residual-current sensitivity.
• 1P+N pole configuration.
• 6 kA rated short-circuit capacity (Icn).
• DIN rail mounting for distribution boards and control panels.

Combined Circuit and Residual-Current Protection

RCBOs combine the functions of a miniature circuit breaker and a residual current device in one unit. The ABB DS201K20A300 protects single-phase circuits against overload and short-circuit currents while monitoring for residual currents to earth, providing combined electrical protection within a compact distribution-board footprint.

The Type A residual-current characteristic allows the device to respond to sinusoidal AC and pulsating DC residual currents. Its K tripping characteristic provides overcurrent protection for suitable circuits containing equipment that can draw higher starting currents during normal operation.

Typical Applications

• Residential electrical distribution boards.
• Commercial building electrical installations.
• Industrial distribution and control panels.
• Single-phase branch circuit protection.
• Circuits supplying equipment with higher starting currents.
• Installations requiring Type A residual-current detection.