2CSR252001R1505 ABB DS202 AC-B50/0.03 RCBO 2 Pole 50 A 30 mA 6 kA

Why Choose the ABB DS202 AC-B50/0.03 RCBO?

The ABB DS202 AC-B50/0.03 is a two-pole residual current circuit breaker with overcurrent protection (RCBO) designed to protect electrical circuits against overloads, short circuits and sinusoidal AC earth-fault currents. Part of the ABB DS200 series, it combines overcurrent and residual-current protection in a single DIN-rail device.

This RCBO combines a B-curve overcurrent characteristic with Type AC residual-current detection. It is rated at 50 A with 30 mA residual-current sensitivity, making it suitable for appropriate residential, commercial and industrial circuits where individual residual-current and overcurrent protection is required.

The DS202 AC-B50/0.03 provides a rated short-circuit capacity of 6 kA, operates at a rated voltage of 230 V AC and supports 50/60 Hz systems. Both poles are protected, and this 50 A version is provided with additional terminals for remote tripping.

Key Advantages

• Combined overload, short-circuit and residual-current protection in one device.
• 50 A rated current for higher-current circuits within the device rating.
• 30 mA residual-current sensitivity for additional protection against electric shock.
• Type AC detection for sinusoidal alternating residual currents.
• B-curve tripping characteristic for appropriate loads with relatively low inrush currents.
• 6 kA short-circuit capacity for dependable fault protection.

Key Features

• ABB DS200 RCBO series.
• 50 A rated current.
• 30 mA rated residual operating current.
• B-curve overcurrent characteristic.
• Type AC residual-current characteristic.
• Two poles, both protected.
• 230 V AC rated voltage.
• 50/60 Hz rated frequency.
• 6 kA rated short-circuit capacity.
• Additional terminals for remote tripping.

Combined Residual-Current and Overcurrent Protection

An RCBO combines miniature circuit breaker and residual-current protection functions within one device. The ABB DS202 AC-B50/0.03 protects against overload and short-circuit currents while also detecting sinusoidal alternating earth-fault currents, providing protection against indirect contact and additional protection against direct contact.

Its 30 mA residual-current sensitivity and individual circuit protection make it suitable for applications where localised fault isolation is desirable. The B-curve characteristic is intended for appropriate circuits with relatively low starting currents, while the two-pole arrangement ensures both poles are protected.

Typical Applications

• Residential electrical distribution systems.
• Commercial electrical installations.
• Industrial distribution systems.
• Higher-current circuits with relatively low inrush characteristics.
• Circuits requiring combined overcurrent and residual-current protection.
• DIN-rail distribution boards requiring individual circuit protection.