2CSR253001R1065 ABB DS203 AC-B6/0.03 RCBO 3P Type AC 6A 30mA 6kA

Why Choose the ABB DS203 AC-B6/0.03 RCBO?

The ABB DS203 AC-B6/0.03 is a three-pole Type AC residual current circuit breaker with overcurrent protection (RCBO) designed to provide combined protection against overloads, short circuits and residual earth fault currents. As part of the ABB DS200 / DSH200 RCBO range, it integrates residual-current and overcurrent protection in a single DIN-rail device for three-phase commercial and industrial electrical distribution systems.

With a rated current of 6 A, a rated residual operating current of 30 mA and a 6 kA rated short-circuit breaking capacity, the DS203 AC-B6/0.03 provides coordinated protection for lower-current three-phase circuits. Its Type AC residual-current characteristic is designed to detect sinusoidal alternating residual currents, while the three-pole configuration provides protection across all three phases.

The B tripping characteristic is suited to circuits with relatively low inrush currents, making this RCBO appropriate for resistive loads, general distribution and control circuits where high starting currents are not normally expected. Its compact modular construction enables straightforward installation within suitable electrical distribution boards and control panels.

Key Advantages

• Combined residual-current, overload and short-circuit protection in one device.
• 6 A rated current suitable for lower-current three-phase circuits.
• 30 mA residual-current sensitivity for additional protection against electric shock.
• Type AC residual-current detection for sinusoidal alternating residual currents.
• 6 kA rated short-circuit breaking capacity.
• B tripping characteristic suitable for circuits with relatively low inrush currents.
• Three-pole configuration for three-phase electrical systems.
• DIN-rail format for straightforward integration into distribution boards and control panels.

Key Features

• ABB DS200 series RCBO.
• 6 A rated current.
• 30 mA rated residual operating current.
• Type AC residual-current characteristic.
• B overcurrent tripping characteristic.
• 3-pole configuration.
• 6 kA rated short-circuit breaking capacity.
• Combined residual-current and thermal-magnetic overcurrent protection.
• Protection against sinusoidal AC residual earth fault currents.
• Integrated test function for verification of residual-current operation.
• DIN-rail mounting for modular electrical distribution systems.
• Designed for suitable commercial and industrial three-phase circuits.

Reliable Three-Phase Circuit Protection

An RCBO combines the protective functions of an overcurrent circuit breaker and a residual current device in a single assembly. The ABB DS203 AC-B6/0.03 therefore protects connected three-phase circuits against overload and short-circuit currents while monitoring for sinusoidal AC residual earth fault currents.

The B characteristic is designed for circuits with comparatively low inrush currents, making this model suitable for appropriate resistive loads, control circuits and general electrical distribution applications. Together with its 30 mA Type AC residual-current protection and three-pole construction, the DS203 AC-B6/0.03 provides an integrated protection solution for suitable three-phase installations.

Typical Applications

• Three-phase commercial electrical distribution systems.
• Industrial electrical distribution boards.
• Three-phase control and auxiliary circuits.
• Industrial control panels and switchboards.
• Resistive loads and circuits with relatively low inrush currents.
• DIN-rail installations requiring combined 6 A three-pole RCBO protection.