2CSR274001R1505 ABB DS204MACB500.03 DS204 M AC-B50/0.03 50 A 30 mA 10 kA 4P Type AC RCBO

Why Choose the ABB DS204MACB500.03 RCBO?

The ABB DS204MACB500.03, manufacturer order code 2CSR274001R1505, is a reliable four-pole residual current circuit breaker with overcurrent protection (RCBO) designed to provide combined protection against overloads, short circuits and sinusoidal AC residual currents. As part of the established ABB DS200 / DS204 M RCBO series, it combines residual-current and overcurrent protection within a single modular protective device.

The DS204 M AC-B50/0.03 provides a 50 A rated current, B tripping characteristic and 30 mA rated residual operating current. Its Type AC residual-current characteristic is designed to detect sinusoidal alternating residual currents, while the integrated overcurrent protection safeguards the circuit against overload and short-circuit conditions.

With a 10 kA short-circuit breaking capacity and four poles, the DS204MACB500.03 is suitable for three-phase electrical distribution applications requiring multi-pole circuit protection. Its modular construction enables straightforward installation within electrical distribution boards and control panels.

Key Advantages

• Combined residual-current and overcurrent protection in a single RCBO.
• 50 A rated current for suitable electrical circuits.
• 30 mA residual operating current for additional protection against electric shock.
• 10 kA short-circuit breaking capacity for robust circuit protection.
• Type AC residual-current detection for sinusoidal alternating residual currents.
• B-curve tripping characteristic suitable for circuits with relatively low inrush currents.
• Four-pole configuration for three-phase electrical distribution systems.

Key Features

• ABB DS200 / DS204 M RCBO series.
• 50 A rated current.
• 30 mA rated residual current.
• 10 kA short-circuit breaking capacity.
• Type AC residual-current characteristic.
• Type B overcurrent tripping characteristic.
• Four-pole configuration.
• Combined protection against overload, short-circuit and residual earth fault currents.
• Modular design for electrical distribution boards and control panels.

Combined Circuit and Residual-Current Protection

RCBOs combine the functions of overcurrent and residual-current protection in one device. The ABB DS204 M AC-B50/0.03 protects connected circuits against excessive current caused by overloads and short circuits while also detecting sinusoidal AC residual currents associated with earth leakage and insulation faults.

The 30 mA residual-current sensitivity provides additional protection against electric shock, while the Type AC characteristic responds to sinusoidal alternating residual currents. Combined with its 10 kA short-circuit breaking capacity and B-curve overcurrent characteristic, the DS204MACB500.03 provides comprehensive protection for suitable four-pole electrical circuits.

Typical Applications

• Three-phase electrical distribution systems.
• Commercial electrical installations.
• Industrial distribution boards and control panels.
• Circuits requiring combined overload and earth-leakage protection.
• Circuits with resistive or relatively low-inrush loads suited to a B tripping characteristic.
• Applications requiring four-pole circuit protection.
• Final distribution circuits requiring 30 mA residual-current protection.