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1SDA054912R1 ABB AUX-C T4-T5-T6 1Q 1SY 400 V AC Auxiliary Contact Set
ABB 1SDA054912R1 is a cabled 400 V AC AUX-C signalling contact set for SACE Tmax T4, T5 and T6 circuit breakers with one changeover contact for open/closed indication and one changeover contact for tripped indication.
£102.11
Why Choose the ABB 1SDA054912R1 AUX-C Auxiliary Contact Set?
The ABB 1SDA054912R1 is a cabled auxiliary and trip-signalling contact set designed for compatible ABB SACE Tmax T4, T5 and T6 moulded case circuit breakers. As part of the ABB Tmax T accessory range, it provides electrical feedback of circuit breaker operating position and trip status to external indication, control and automation systems.
This AUX-C configuration combines one Q changeover contact for open/closed indication with one SY changeover contact for tripped indication. These separate signalling functions allow external equipment to monitor the normal position of the circuit breaker while also identifying when the breaker has operated due to a trip.
Rated for 400 V AC signalling applications, the 1SDA054912R1 provides a dedicated ABB solution for circuit breaker status feedback. Its cabled configuration supports integration into industrial switchboards, distribution panels, control systems and other installations requiring dependable remote indication.
Key Advantages
- Provides open/closed and tripped circuit breaker status signalling.
- Compatible with ABB SACE Tmax T4, T5 and T6 circuit breakers.
- Includes one Q changeover contact for breaker position indication.
- Includes one SY changeover contact for trip indication.
- 400 V AC rating for compatible signalling and control circuits.
- Cabled AUX-C design simplifies integration with external monitoring equipment.
Key Features
- ABB SACE Tmax T series accessory.
- AUX-C cabled auxiliary contact assembly.
- 1Q open/closed indication contact.
- 1SY tripped indication contact.
- Total of two changeover signalling contacts.
- 400 V AC rated voltage.
- Designed for Tmax T4, T5 and T6 moulded case circuit breakers.
- Suitable for remote status indication, alarm and control applications.
Reliable Circuit Breaker Status Signalling
Auxiliary contacts convert the mechanical operating state of a circuit breaker into electrical signals that can be used by external control and monitoring equipment. The Q contact in the ABB 1SDA054912R1 provides feedback of the breaker open or closed position, supporting remote indication and automated system supervision.
The separate SY contact provides trip signalling, allowing external equipment to distinguish a protective trip from normal circuit breaker operation. This combination makes the AUX-C accessory suitable for switchboard indication, PLC inputs, alarm circuits and power management systems requiring clear breaker-status information.
Typical Applications
- Open/closed status indication for ABB Tmax T4, T5 and T6 circuit breakers.
- Circuit breaker trip-status signalling.
- Industrial electrical distribution panels.
- PLC and automation system monitoring.
- Switchboard indication and alarm circuits.
- Building and industrial power management systems.
Technical Specifications
| Series | SACE Tmax T |
|---|---|
| Model / order code | 1SDA054912R1 |
| Product designation | AUX-C T4-T5-T6 1Q 1SY 400 Vac |
| Product type | Cabled auxiliary and signalling contact set |
| Compatible circuit breakers | Tmax T4, T5 and T6 |
| Open/closed indication contacts | 1 changeover contact (1Q) |
| Trip indication contacts | 1 changeover contact (1SY) |
| Total signalling contacts | 2 changeover contacts |
| Rated voltage | 400 V AC |
| Connection version | Cabled |
| Function | Circuit breaker position and trip-status signalling |
| ABB product group | 310511-T-Max T4 - T8 |
Frequently Asked Questions
What is the ABB 1SDA054912R1 used for?
The ABB 1SDA054912R1 provides electrical indication of the open/closed position and tripped status of compatible ABB Tmax T4, T5 and T6 circuit breakers.
How many signalling contacts does the ABB 1SDA054912R1 provide?
It provides two changeover contacts: one Q contact for open/closed position indication and one SY contact for trip indication.
Which circuit breakers are compatible with the ABB 1SDA054912R1?
The AUX-C accessory is designed for ABB SACE Tmax T4, T5 and T6 moulded case circuit breakers.
What is the voltage rating of the ABB 1SDA054912R1?
The 1SDA054912R1 is specified for a rated voltage of 400 V AC.
What is the difference between the Q and SY contacts?
The Q contact provides circuit breaker open/closed position indication, while the SY contact provides dedicated tripped indication, allowing an external control system to distinguish breaker position from a trip condition.
Trusted by Electrical Professionals Worldwide
ABB SACE Tmax circuit breaker accessories provide coordinated signalling, control and protection functions for industrial and commercial electrical distribution systems, helping panel builders, engineers and system integrators implement dependable circuit breaker status monitoring.
