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1SDA073752R1 ABB AUX 2Q 400VAC + 2Q 24VDC E1.2 Auxiliary Contact
ABB 1SDA073752R1 is an Emax 2 mixed-voltage auxiliary contact assembly providing two changeover contacts for up to 400 V AC and two changeover contacts for 24 V DC open and closed circuit breaker status signalling.
£203.73
Why Choose the ABB 1SDA073752R1 Emax 2 Auxiliary Contact?
The ABB 1SDA073752R1 is a mixed-voltage four-changeover auxiliary contact assembly designed for open and closed status signalling on compatible ABB SACE Emax 2 air circuit breakers. Identified as AUX 2Q 400VAC + 2Q 24VDC E1.2, it combines two auxiliary changeover contacts for higher-voltage AC signalling circuits with two contacts intended for low-voltage 24 V DC signalling applications.
As part of the ABB SACE Emax 2 electrical accessory range, the 1SDA073752R1 provides dependable circuit breaker position feedback for switchboards, automation systems and power distribution equipment. Its four changeover contacts allow external control and monitoring equipment to identify the open or closed state of the associated breaker.
The mixed contact configuration provides 2Q contacts for up to 400 V AC together with 2Q contacts for 24 V DC, making the accessory particularly useful where conventional switchgear signalling and low-voltage electronic control circuits are required within the same installation. It is designed for the ABB Emax 2 E1.2 frame and is also associated with compatible XT7 and XT7M circuit breaker platforms.
Key Advantages
- Genuine ABB auxiliary contact accessory for circuit breaker status signalling.
- Provides a total of four changeover contacts (4Q).
- Mixed configuration with 2Q for up to 400 V AC and 2Q for 24 V DC.
- Designed for the ABB SACE Emax 2 E1.2 air circuit breaker frame.
- Enables open and closed breaker status to be communicated to external monitoring and control systems.
- Suitable for installations combining conventional AC signalling and low-voltage DC automation circuits.
Key Features
- ABB SACE Emax 2 electrical accessory.
- Four changeover auxiliary contacts in total.
- 2Q contacts rated for up to 400 V AC signalling.
- 2Q contacts for 24 V DC signalling.
- Provides circuit breaker open/closed position indication.
- Suitable for Emax 2 E1.2 air circuit breakers.
- Also associated with compatible XT7 and XT7M circuit breaker applications.
- Spring clamp electrical connection.
- ABB order code and Product ID 1SDA073752R1.
Flexible AC and DC Circuit Breaker Status Signalling
Auxiliary contacts provide electrical indication of a circuit breaker's operating position independently of its main power contacts. When the breaker changes between open and closed states, the auxiliary contacts change state accordingly, enabling connected control, indication and automation equipment to monitor breaker position remotely.
The ABB 1SDA073752R1 combines two higher-voltage AC changeover contacts with two 24 V DC changeover contacts. This mixed-voltage arrangement is especially useful in switchboards where traditional electrical signalling circuits and modern low-voltage PLC, control or monitoring circuits need status information from the same circuit breaker.
Typical Applications
- ABB SACE Emax 2 E1.2 air circuit breaker installations.
- Open and closed circuit breaker position indication.
- Low-voltage switchboards and switchgear assemblies.
- Remote circuit breaker status monitoring.
- PLC and industrial automation signalling circuits.
- Mixed AC and 24 V DC control systems.
Technical Specifications
| Series | SACE Emax 2 |
|---|---|
| Order code / Product ID | 1SDA073752R1 |
| Product type | Auxiliary contact block |
| Function | Circuit breaker open/closed status signalling |
| Total changeover contacts | 4 |
| AC contact configuration | 2Q, up to 400 V AC |
| DC contact configuration | 2Q, 24 V DC |
| Electrical connection | Spring clamp connection |
| Suitable for | Emax 2 E1.2, XT7 and XT7M |
| Product group | Emax 2 Air Circuit Breaker accessories |
Frequently Asked Questions
What is the ABB 1SDA073752R1 used for?
The ABB 1SDA073752R1 is an auxiliary contact assembly used to provide electrical open and closed status signalling from compatible ABB circuit breakers to external control, indication and monitoring systems.
How many contacts does the ABB 1SDA073752R1 provide?
The accessory provides four changeover contacts in total, comprising two contacts for up to 400 V AC signalling and two contacts for 24 V DC signalling.
What does AUX 2Q 400VAC + 2Q 24VDC mean?
It identifies the mixed auxiliary contact configuration: two changeover contacts for up to 400 V AC circuits and two changeover contacts for 24 V DC circuits.
Which circuit breakers are compatible with the ABB 1SDA073752R1?
The accessory is designed for the ABB SACE Emax 2 E1.2 frame and is also associated with compatible ABB XT7 and XT7M circuit breaker applications.
Why use mixed 400 V AC and 24 V DC auxiliary contacts?
The mixed contact configuration allows the same circuit breaker to provide status signals to both higher-voltage AC signalling circuits and low-voltage 24 V DC control or automation circuits.
ABB Emax 2 Power Distribution Accessories
ABB SACE Emax 2 auxiliary contacts provide reliable open and closed circuit breaker status signalling for switchboards, automation equipment and low-voltage power distribution systems, supporting effective integration with modern control and monitoring architectures.
