1SDA062104R1 ABB AUX T7 1Q + 1SY 400V AC Auxiliary Contact

Why Choose the ABB 1SDA062104R1 AUX T7 1Q + 1SY 400V AC Auxiliary Contact?

The ABB 1SDA062104R1 is an auxiliary contact accessory for ABB SACE Tmax T7 circuit breakers. Identified as AUX T7 1Q + 1SY 400V AC, it combines one changeover contact for circuit breaker open/closed position signalling with one changeover contact for automatic trip indication.

Designed for signalling circuits up to 400 V AC, the accessory provides two distinct electrical status signals from a compatible T7 circuit breaker. The 1Q contact indicates the breaker open or closed position, while the 1SY contact provides separate indication when the circuit breaker has operated automatically following a trip.

By combining operating-position and trip-status indication in one accessory, the 1SDA062104R1 supports switchboard annunciation, remote monitoring and integration with suitable control systems. It is supplied as a loose or configurable ABB Tmax T accessory and provides two SPDT changeover contacts in total.

Key Advantages

• Genuine ABB SACE Tmax T7 auxiliary contact accessory.
• Combines 1Q open/closed signalling with 1SY automatic trip signalling.
• Designed for signalling applications up to 400 V AC.
• Provides two changeover contacts within one accessory arrangement.
• Supports remote breaker status indication, alarms and control-system integration.
• Dedicated ABB accessory designed for compatible Tmax T7 circuit breakers.

Key Features

• ABB AUX T7 1Q + 1SY auxiliary contact assembly.
• 400 V AC signalling configuration.
• One Q changeover contact for open/closed breaker status.
• One SY changeover contact for automatic trip indication.
• Two SPDT changeover contacts in total.
• Designed for compatible ABB SACE Tmax T7 circuit breakers.
• Suitable for switchboard status and alarm circuits.
• Loose or configurable accessory configuration.
• Manufactured to applicable IEC requirements.
• ABB order code 1SDA062104R1.

Circuit Breaker Position and Automatic Trip Signalling

Auxiliary contacts convert the mechanical status of a circuit breaker into electrical signals that can be used by switchboard indicators, alarm circuits and control systems. On the ABB 1SDA062104R1, the 1Q changeover contact provides an electrical indication corresponding to the open or closed state of the compatible Tmax T7 circuit breaker.

The separate 1SY changeover contact signals an automatic breaker trip, allowing monitoring equipment to distinguish a protection-related trip from normal opening of the breaker. With its 400 V AC configuration, the accessory provides a practical solution for T7 installations requiring both breaker-position and trip-status signalling.

Typical Applications

• ABB Tmax T7 circuit breaker status monitoring.
• Open and closed position indication in switchboards.
• Automatic trip indication and alarm circuits.
• Industrial low-voltage distribution panels.
• Building and infrastructure power monitoring systems.
• Remote status signalling and control-system integration.