2CSR255180R1407 ABB DS201 K40 A30 RCBO 1P+N 40A Type A 30mA 6kA

Why Choose the ABB DS201 K40 A30 RCBO?

The ABB DS201 K40 A30 is a compact and reliable residual current circuit breaker with overcurrent protection (RCBO) designed to protect single-phase circuits against overloads, short circuits and earth leakage faults. As part of the ABB DS200 / DS201 RCBO range, it combines residual current and overcurrent protection in a single modular device for efficient electrical distribution and final-circuit protection.

This RCBO provides a 40 A rated current, K tripping characteristic and 30 mA Type A residual current sensitivity. Type A residual current protection detects sinusoidal AC and pulsating DC residual currents, while the K characteristic makes the device particularly suitable for circuits supplying inductive loads and equipment with relatively high starting currents.

With a 1P+N configuration and 6 kA rated short-circuit breaking capacity, the DS201 K40 A30 provides comprehensive protection in a compact DIN-rail format. ABB order code 2CSR255180R1407 identifies this specific 40 A, K-curve, Type A, 30 mA version.

Key Advantages

• Combines residual current, overload and short-circuit protection in one device.
• 40 A rated current for single-phase circuits.
• 30 mA residual current sensitivity for additional protection against electric shock.
• Type A residual current detection for sinusoidal AC and pulsating DC fault currents.
• K tripping characteristic suitable for inductive loads and equipment 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.
• 40 A nominal current.
• K-curve tripping characteristic.
• Type A residual current protection.
• 30 mA rated residual operating current.
• 1P+N pole configuration.
• 6 kA rated short-circuit breaking capacity.
• DIN-rail mounting for modular electrical distribution systems.
• Integrated protection against overload, short circuit and residual current faults.

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 K40 A30 therefore protects the connected circuit against overload and short-circuit currents while also disconnecting the supply when hazardous residual current to earth is detected.

Its Type A residual current characteristic provides protection against sinusoidal alternating and pulsating direct residual currents. The 30 mA sensitivity supports additional protection against electric shock, while the K tripping characteristic helps accommodate the higher starting currents associated with motors, transformers and other inductive equipment.

Typical Applications

• Single-phase industrial and commercial circuits.
• Motors and inductive electrical loads.
• Equipment with elevated starting currents.
• Machinery and automation control circuits.
• Electrical distribution boards.
• Control panels and light industrial installations.