DSE201 B25 AC30 - N Blue Residual Current Circuit Breaker with Overcurrent Protection

Why Choose the ABB DSE201 B25 AC30 RCBO?

The ABB DSE201 B25 AC30 is a compact residual current circuit breaker with overcurrent protection (RCBO) designed to protect single-phase electrical circuits against overloads, short circuits and earth leakage faults. As part of ABB's reliable DSE201 series, it combines miniature circuit breaker and residual current protection into one space-saving DIN rail mounted device, making it ideal for residential and light commercial installations.

Featuring a B tripping characteristic and Type AC residual current protection, the DSE201 B25 AC30 is ideal for conventional electrical circuits where only sinusoidal alternating residual currents are expected. Its B curve characteristic provides rapid disconnection on relatively low fault currents, making it suitable for socket outlets, lighting circuits and general-purpose power circuits.

With a 25 A rated current, 30 mA residual current sensitivity and a 6 kA breaking capacity, the ABB DSE201 B25 AC30 delivers dependable protection while occupying just one DIN rail module, helping maximise available space within consumer units and distribution boards.

Key Advantages

• Combined residual current and overcurrent protection in one compact device.
• 25 A rated current suitable for higher-load final circuits.
• 30 mA residual current sensitivity for additional protection against electric shock.
• Type AC residual current protection for alternating sinusoidal earth leakage currents.
• 6 kA short-circuit breaking capacity.
• Compact single-module DIN rail construction.

Key Features

• ABB DSE201 RCBO series.
• 25 A rated current.
• 1P+N configuration.
• B curve tripping characteristic.
• Type AC residual current protection.
• 30 mA rated residual operating current.
• 6 kA breaking capacity.
• DIN rail mounted with screw terminals.

Technical Specifications

• Manufacturer: ABB
• Series: DSE201
• Model: DSE201 B25 AC30
• Product ID: 2CSR255051R1255
• EAN: 8012542659327
• Product type: Residual Current Circuit Breaker with Overcurrent Protection (RCBO)
• Rated current: 25 A
• Number of poles: 1P+N
• Tripping characteristic: B Curve
• Residual current type: Type AC
• Rated residual operating current: 30 mA
• Rated operational voltage: 240 V AC
• Frequency: 50 / 60 Hz
• Rated short-circuit breaking capacity: 6 kA
• Mounting type: DIN rail
• Terminal type: Screw terminals
• Protection rating: IP20
• Mechanical endurance: 20,000 operations
• Weight: Approx. 0.18 kg
• Dimensions (H × W × D): Approx. 100 × 17.6 × 68.9 mm
• Standards: IEC/EN 61009-1, IEC/EN 61009-2-2

Reliable Circuit and Earth Leakage Protection

The ABB DSE201 B25 AC30 combines thermal-magnetic overcurrent protection with residual current protection in a single compact device. It automatically disconnects the electrical supply during overloads, short circuits or earth leakage faults, helping protect people, wiring systems and connected electrical equipment.

Its Type AC residual current protection is designed for installations where only alternating sinusoidal leakage currents are expected, while the B curve characteristic provides fast protection for domestic and commercial circuits with relatively low inrush currents.

Typical Applications

• Residential consumer units.
• Socket outlet circuits.
• Lighting circuits.
• Small commercial premises.
• Office and retail installations.
• General-purpose final circuits.

Trusted Protection for Everyday Electrical Installations

ABB DSE201 RCBOs are trusted by electricians, contractors and panel builders for providing reliable overload, short-circuit and residual current protection in residential and commercial electrical installations.