2CSR255188R1257 ABB DS201TK25A30 DS201T K25 A30 RCBO 25 A 30 mA 6 kA

Why Choose the ABB DS201TK25A30 RCBO?

The ABB DS201TK25A30, type designation DS201T K25 A30, is a compact 1P+N 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 DS201T RCBO series, it combines overcurrent and residual-current protection in a single protective device for demanding electrical installations.

This RCBO features a 25 A rated current, K tripping characteristic and Type A residual-current protection. Its rated residual operating current of 30 mA provides additional protection against electric shock, while Type A detection responds to sinusoidal alternating and pulsating DC residual currents.

With a 6 kA short-circuit breaking capacity and a compact 1P+N configuration, the DS201T K25 A30 provides coordinated circuit and residual-current protection while reducing the need for separate protective devices. ABB order code 2CSR255188R1257 identifies this specific 25 A, K-characteristic, 30 mA Type A variant.

Key Advantages

• Combines overcurrent and residual-current protection in one RCBO.
• 25 A rated current with K tripping characteristic.
• 30 mA Type A residual-current protection for enhanced personnel protection.
• 6 kA short-circuit breaking capacity.
• 1P+N configuration for single-phase circuits.
• Compact design helps optimise space within electrical distribution equipment.

Key Features

• ABB DS201T RCBO series.
• 25 A rated current.
• K characteristic overcurrent protection.
• Type A residual-current detection.
• 30 mA rated residual operating current.
• 6 kA rated short-circuit breaking capacity.
• Protection against overload and short-circuit currents.
• Detection of sinusoidal AC and pulsating DC residual currents.
• DIN-rail format for integration into electrical distribution systems.

Reliable Combined Circuit Protection

RCBOs combine the protective functions of a miniature circuit breaker and residual-current device in one unit. This enables a single device to respond to overloads, short circuits and potentially hazardous earth leakage currents while simplifying protective-device selection and installation.

The ABB DS201T K25 A30 combines K-characteristic overcurrent protection with sensitive 30 mA Type A residual-current protection. This makes it suitable for single-phase circuits requiring dependable protection against both overcurrent faults and residual currents.

Typical Applications

• Single-phase electrical distribution circuits.
• Electrical control and auxiliary circuits.
• Commercial and industrial electrical installations.
• Equipment and machinery power circuits.
• Distribution boards and control panels.
• Circuits requiring combined overload, short-circuit and earth leakage protection.