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1SDA073779R1 ABB S51 24V E2.2…E6.2 Trip Signalling Contact
ABB 1SDA073779R1 is a 24 V DC S51 signalling contact designed to indicate tripping of the Ekip protection trip unit on compatible ABB Emax 2 E2.2, E4.2 and E6.2 air circuit breakers.
£55.82
Why Choose the ABB 1SDA073779R1 S51 24V Trip Signalling Contact?
The ABB 1SDA073779R1 is an S51 trip signalling contact designed for compatible ABB Emax 2 E2.2, E4.2 and E6.2 air circuit breakers. It provides an electrical indication when the associated Ekip protection trip unit has tripped the circuit breaker, allowing protection-related trip status to be communicated to external monitoring, signalling and automation systems.
Unlike a standard auxiliary contact that indicates the open or closed state of the breaker, the S51 accessory is specifically intended for signalling operation of the Ekip protection trip unit. This enables operators and control systems to distinguish a protection-related trip event and incorporate that information into alarms, supervisory systems and switchboard control logic.
The 1SDA073779R1 is specified as S51 24V E2.2...E6.2 and is the 24 V DC version for ABB Emax 2 E2.2 through E6.2 breaker frames. It provides a dedicated low-voltage trip indication solution for modern industrial switchboards and automated power distribution systems.
Key Advantages
- Dedicated S51 contact for signalling Ekip protection trips.
- Designed for ABB Emax 2 E2.2, E4.2 and E6.2 air circuit breakers.
- 24 V DC version suited to low-voltage control and signalling systems.
- Helps distinguish a protection-related trip from ordinary breaker operation.
- Supports alarm, remote monitoring and automation functions.
- Purpose-designed ABB accessory for integration with the Emax 2 and Ekip protection platform.
Key Features
- ABB Emax 2 S51 signalling contact.
- Signals tripping of the Ekip protection trip unit.
- 24 V DC signalling version.
- Compatible with E2.2, E4.2 and E6.2 Emax 2 breaker frames.
- Provides protection-trip feedback to external equipment.
- Suitable for alarms, PLC inputs, supervisory monitoring and switchboard automation.
- Dedicated accessory for protection-related trip indication.
- ABB order code 1SDA073779R1.
Dedicated Protection-Trip Feedback for Emax 2 Systems
A circuit breaker can open for different reasons, so an ordinary open-position signal does not by itself identify whether the breaker was opened intentionally or operated because of a protection event. The S51 contact addresses this requirement by providing dedicated signalling associated with tripping of the Ekip protection trip unit.
The ABB 1SDA073779R1 provides this trip indication for compatible Emax 2 E2.2, E4.2 and E6.2 breakers using a 24 V DC signalling arrangement. Its output can be incorporated into suitable alarm, PLC, supervisory and automation systems so that protection-related breaker trips can be identified and acted upon by operators or control logic.
Typical Applications
- ABB Emax 2 E2.2, E4.2 and E6.2 air circuit breaker installations.
- Ekip protection trip status indication.
- Protection-trip alarm circuits.
- PLC and industrial automation inputs.
- Industrial low-voltage switchboards.
- Power distribution monitoring and supervisory systems.
Technical Specifications
| Series | Emax 2 |
|---|---|
| Order code | 1SDA073779R1 |
| Product type | Protection trip signalling contact |
| Accessory designation | S51 |
| Signalling voltage | 24 V DC |
| Compatible breaker frames | E2.2, E4.2 and E6.2 |
| Compatible series | ABB Emax 2 Air Circuit Breakers |
| Associated protection system | Ekip protection trip unit |
| Function | Electrical signalling of protection trip unit operation |
| EAN | 8015644777128 |
| ABB product group | Emax2 Air Circuit Breaker |
Frequently Asked Questions
What is the ABB 1SDA073779R1 used for?
The ABB 1SDA073779R1 is an S51 signalling contact used to provide electrical indication when the Ekip protection trip unit has tripped a compatible ABB Emax 2 circuit breaker.
What does S51 indicate on an ABB Emax 2 circuit breaker?
The S51 contact signals tripping of the Ekip protection trip unit, providing dedicated feedback that can be used to identify a protection-related breaker trip.
What voltage is the ABB 1SDA073779R1 designed for?
The 1SDA073779R1 is the 24 V DC version of the S51 trip signalling contact.
Which ABB circuit breakers are compatible with the 1SDA073779R1?
The accessory is designed for ABB Emax 2 E2.2, E4.2 and E6.2 air circuit breakers.
Is the S51 contact the same as an ordinary open/closed auxiliary contact?
No. An ordinary auxiliary contact indicates breaker operating position, whereas the S51 is specifically associated with signalling operation of the Ekip protection trip unit.
Can the ABB 1SDA073779R1 be used with an automation system?
Yes. Its 24 V DC trip signalling function is suitable for integration with compatible PLC inputs, alarm systems, supervisory equipment and switchboard automation circuits.
Trusted by Electrical and Switchgear Professionals Worldwide
ABB Emax 2 air circuit breakers and their dedicated Ekip signalling accessories provide an integrated platform for low-voltage power distribution, helping switchboard builders and electrical engineers implement dependable protection, trip indication, monitoring and automation.
