DC Circuit Switching Contactors

The ABB GA75 and GAE75 contactors are specialized low-voltage switching devices engineered for safe and efficient operation in direct current (DC) circuits, where arc suppression poses greater challenges compared to alternating current (AC) systems. These contactors are particularly suited for applications involving non-inductive loads, shunt motors, and series motors, each with varying L/R time constants. Key Features:

• DC Arc Suppression: Equipped with arc chutes containing permanent magnets, these contactors effectively manage arc suppression in DC applications.

• Single-Pole Configuration: Both GA75 (AC-operated) and GAE75 (DC-operated) models are single-pole devices with three contact paths arranged in series, ensuring reliable DC circuit interruption.

• Polarity-Sensitive Connections: Proper polarity connections are crucial for optimal performance, with terminals clearly marked to guide correct installation.

• Versatile Coil Voltage Options: A range of coil voltages is available to accommodate various control circuit requirements, enhancing application flexibility.

• Accessory Compatibility: Standard accessories from ABB's A and AE 40–75 contactor series are compatible, allowing for seamless integration and customization.