2CSR255180R3027 ABB DS201 K2 A300 RCBO 1P+N 2A Type A 300mA 6kA

Why Choose the ABB DS201 K2 A300 RCBO?

The ABB DS201 K2 A300 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 for commercial and industrial electrical distribution.

This RCBO provides a 2 A rated current, K tripping characteristic and 300 mA Type A residual current sensitivity. Type A residual current protection detects sinusoidal AC and pulsating DC residual currents, while the K characteristic is suited to inductive loads and equipment with elevated starting currents.

With a 1P+N configuration and 6 kA rated short-circuit breaking capacity, the DS201 K2 A300 provides combined circuit and residual current protection in a compact DIN-rail format. ABB order code 2CSR255180R3027 identifies this specific 2 A, K-curve, Type A, 300 mA version.

Key Advantages

• Combines residual current, overload and short-circuit protection in one device.
• 2 A rated current for low-current single-phase circuits.
• 300 mA rated residual operating current.
• Type A residual current detection for sinusoidal AC and pulsating DC residual fault currents.
• K tripping characteristic suited to inductive loads and circuits with elevated starting 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.
• 2 A nominal current.
• K-curve tripping characteristic.
• Type A residual current protection.
• 300 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 K2 A300 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 300 mA sensitivity and K tripping characteristic, the DS201 K2 A300 is well suited to low-current circuits where inductive equipment or other loads can produce elevated starting currents.

Typical Applications

• Low-current single-phase electrical circuits.
• Industrial control and auxiliary circuits.
• Control transformers and inductive loads.
• Automation and machinery control circuits.
• Circuits with elevated starting or inrush currents.
• Commercial and industrial distribution boards.