2CCS800900R0011 ABB S800-AUX Auxiliary Contact 2CO

Why Choose the ABB S800-AUX Auxiliary Contact?

The ABB S800-AUX is a dedicated auxiliary contact with 2 changeover (2CO) contacts designed for use with compatible ABB S800 high-performance circuit breakers. As part of the ABB S800 accessory range, it provides remote electrical indication of the associated protective device's switching position for monitoring, signalling and control applications.

Auxiliary contacts allow the mechanical state of a circuit breaker to be incorporated into control and automation circuits. The S800-AUX provides two electrically independent changeover contacts, giving system designers flexible normally open and normally closed signalling options for status indication, interlocking and supervisory functions.

Designed as a dedicated accessory for the ABB S800 platform, the S800-AUX integrates with compatible protective devices to provide reliable position signalling without changing the primary circuit protection function. Its compact construction makes it well suited to industrial control panels, switchboards and automated electrical distribution systems.

Key Advantages

• Dedicated auxiliary contact for compatible ABB S800 devices.
• 2 changeover (2CO) contacts for flexible signalling arrangements.
• Provides remote indication of circuit breaker switching status.
• Suitable for monitoring, signalling, interlocking and control circuits.
• Integrates directly with the ABB S800 high-performance circuit breaker platform.
• Compact accessory design for professional electrical panels and switchboards.

Key Features

• ABB S800 accessory range.
• 2CO auxiliary contact configuration.
• Two changeover contacts for status signalling.
• Supports normally open and normally closed signalling functions.
• Designed for compatible ABB S800 circuit breakers.
• Suitable for auxiliary monitoring and control circuits.
• Mechanical coupling to the associated protective device.
• ABB order code 2CCS800900R0011.

Reliable Circuit Breaker Status Signalling

Auxiliary contacts translate the mechanical position of a protective device into electrical signals that can be used by control systems, indicator circuits and automation equipment. This enables operators and supervisory systems to monitor circuit breaker status without relying solely on direct visual inspection.

With two changeover contacts, the ABB S800-AUX provides flexible signalling possibilities for applications requiring multiple status signals or combinations of normally open and normally closed contacts. This makes it a useful accessory for industrial automation, switchboard monitoring and electrical interlocking arrangements.

Typical Applications

• Remote circuit breaker status indication.
• Industrial control and automation panels.
• Switchboard monitoring systems.
• Electrical interlocking circuits.
• Building management and supervisory systems.
• Alarm, indication and control circuits using ABB S800 protective devices.