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1SDA073698R1 ABB YU E1.2..E6.2 110-120 Vac/dc Undervoltage Release
ABB 1SDA073698R1 YU is a 110–120 V AC/DC non-delayed undervoltage release designed for compatible SACE Emax 2 E1.2–E6.2 circuit breakers and fail-safe low-voltage switchgear control.
£167.05
Why Choose the ABB YU E1.2..E6.2 110-120 Vac/dc Undervoltage Release?
The ABB YU E1.2..E6.2 110-120 Vac/dc, order code 1SDA073698R1, is a 110–120 V AC/DC undervoltage release designed for compatible ABB low-voltage circuit breakers. Part of the electrical accessory range for ABB SACE Emax 2, it provides fail-safe circuit-breaker control by monitoring the control supply and operating the breaker mechanism if the voltage falls below the required level or is removed.
The YU undervoltage release is used in protection and control schemes where a circuit breaker must open automatically following loss or excessive reduction of control voltage. It also prevents normal breaker closing unless sufficient voltage is available to energise the release, making it suitable for safety-related control, power distribution and automation applications.
Rated for a 110–120 V AC/DC control supply, the 1SDA073698R1 supports both AC and DC control systems. It is designed for ABB SACE Emax 2 E1.2, E2.2, E4.2 and E6.2 circuit breakers, providing a manufacturer-engineered accessory for dependable undervoltage control in industrial, commercial and infrastructure switchgear.
Key Advantages
- Genuine ABB YU undervoltage release for compatible circuit breakers.
- 110–120 V AC/DC control voltage supports AC and DC control systems.
- Provides automatic breaker opening following loss or excessive reduction of control voltage.
- Suitable for ABB SACE Emax 2 E1.2 through E6.2 circuit breakers.
- Helps prevent circuit-breaker closing when adequate control voltage is unavailable.
- Fail-safe operating principle supports dependable protection and control schemes.
- Designed for industrial, commercial and infrastructure power distribution systems.
Key Features
- ABB YU undervoltage release.
- 110–120 V AC/DC rated control supply.
- Suitable for 50/60 Hz AC control circuits.
- Compatible with DC control supplies within the specified voltage range.
- Non-delayed undervoltage operation.
- Suitable for E1.2, E2.2, E4.2 and E6.2 Emax 2 circuit breakers.
- Designed for automatic opening when the control supply falls below the required operating level.
- ABB-engineered accessory for low-voltage power circuit breakers.
Reliable Undervoltage Circuit Breaker Control
An undervoltage release provides a fail-safe method of controlling a circuit breaker according to the condition of an external control supply. If the voltage falls sufficiently or disappears, the YU release acts on the breaker mechanism so that the protected circuit is disconnected rather than remaining energised under an unwanted control condition.
The ABB 1SDA073698R1 combines this functionality with a 110–120 V AC/DC operating range, making it suitable for common industrial and switchgear control voltages. Its compatibility across the Emax 2 E1.2 to E6.2 platform supports consistent control architecture across a broad range of low-voltage distribution applications.
Typical Applications
- Undervoltage control of ABB SACE Emax 2 air circuit breakers.
- Low-voltage power distribution switchboards.
- Industrial electrical control and automation systems.
- Fail-safe circuit-breaker control schemes.
- Emergency and safety-related electrical control systems.
- Commercial and infrastructure power distribution installations.
Technical Specifications
| Series | SACE Emax 2 Accessories |
|---|---|
| ABB order code | 1SDA073698R1 |
| Product type | Undervoltage release |
| Accessory function | Undervoltage circuit-breaker release |
| Rated control supply voltage | 110–120 V AC/DC |
| AC frequency | 50 / 60 Hz |
| Actuating voltage type | AC/DC |
| Delayed operation | No |
| Compatible Emax 2 sizes | E1.2, E2.2, E4.2, E6.2 |
| Product family | SACE Emax 2 |
| Suitable for power circuit breakers | Yes |
Frequently Asked Questions
What is the ABB 1SDA073698R1 used for?
It is an undervoltage release used to operate compatible ABB circuit breakers when the control supply falls below the required operating level or is removed.
What control voltage does the ABB 1SDA073698R1 require?
The YU undervoltage release is designed for a 110–120 V AC/DC control supply.
Which Emax 2 circuit breakers are compatible with the ABB 1SDA073698R1?
The release is designed for ABB SACE Emax 2 E1.2, E2.2, E4.2 and E6.2 circuit breakers.
Is the ABB 1SDA073698R1 a delayed undervoltage release?
No. The YU 1SDA073698R1 is a non-delayed undervoltage release for direct undervoltage operation.
Can the ABB 1SDA073698R1 be used with both AC and DC control circuits?
Yes. It is designed for 110–120 V AC/DC control supplies, with AC operation suitable for 50/60 Hz systems.
Trusted Circuit Breaker Accessories from ABB
ABB SACE Emax 2 circuit-breaker accessories provide purpose-designed control and protection functions for low-voltage switchgear, supporting dependable operation and integration into industrial, commercial and infrastructure power distribution systems.
