ABB 1SDA073685R1 Shunt Closing Release (YC)

Key Features

• Remote Electrical Closing – Enables closing of the circuit breaker from a remote control panel, PLC, or SCADA system without manual intervention

• Universal Voltage Compatibility – Rated for both AC and DC applications at 110–120 V, simplifying inventory and reducing spare parts variants

• Wide Breaker Compatibility – Designed for SACE Emax 2 (E1.2, E2.2, E4.2, E6.2) and Tmax XT7M frames

• Factory-Engineered Accessory – Direct mounting to the breaker mechanism, no external adapters required

• RoHS Compliant – Following EU Directive 2011/65/EU and Amendment 2015/863

Technical Specifications

Core Advantages

1. Remote Closing Capability for Automated Systems

The YC release converts an electrical control signal into a mechanical closing action, allowing the circuit breaker to be closed remotely from a control room, PLC, or SCADA system. This is essential for automated transfer switching, generator synchronization, and remote restoration of power after fault clearing .

2. Universal AC/DC Voltage Design

The 1SDA073685R1 operates on both 110–120 V AC and 110–120 V DC. This reduces inventory complexity and ensures the correct spare is available regardless of the control power source in your facility .

3. Broad Breaker Compatibility

One part number serves multiple breaker families: the SACE Emax 2 air circuit breakers (E1.2 through E6.2) and the Tmax XT7M moulded case breakers. This compatibility simplifies maintenance planning for facilities using a mix of ABB breaker platforms .

4. Essential for Full Remote Operation

The YC release is a key element in automated power distribution schemes. When combined with the YO (Shunt Opening Release) and the spring-charging motor (M), it enables full remote open/close operation of the breaker . This is a prerequisite for automated transfer switching, generator synchronization, and protection coordination systems.

5. Proven OEM Design

The YC release is a factory-engineered accessory from ABB, designed specifically for these breaker platforms. As a new and original ABB product, it ensures reliable performance and maintains system integrity .

Applications

The ABB 1SDA073685R1 YC release is deployed across critical power distribution and control applications:

Recommended Models & Related Accessories

Note: The YC release is the closing coil. For remote opening, the YO shunt opening release is required. Both can be installed together on the same breaker for full remote operation.

What's Included

• 1 × ABB 1SDA073685R1 Shunt Closing Release (YC)

Note: Circuit breaker, YO opening release, spring-charging motor, and Ekip trip unit are sold separately.

Why Buy From Us?

• New and Original – Genuine ABB factory accessory

• In Stock – Ready to ship same/next business day

• Fully Tested – Each unit verified for functionality

• Warranty Included – Purchase with confidence

• Technical Support – Breaker compatibility assistance available

Frequently Asked Questions (FAQ)

Q1: What is the ABB 1SDA073685R1?

It is a Shunt Closing Release (YC) for ABB SACE Emax 2 and Tmax XT7M circuit breakers. It enables remote electrical closing of the breaker by converting a control signal into a mechanical closing action .

Q2: What is the difference between YC and YO?

YC (Shunt Closing Release) closes the breaker. YO (Shunt Opening Release) opens/trips the breaker. The 1SDA073685R1 is a YC — it closes the breaker .

Q3: What voltage does this YC release operate at?

It operates at 110–120 V AC/DC — the same voltage for both AC and DC applications .

Q4: Which circuit breakers are compatible?

It is designed for SACE Emax 2 frames (E1.2, E2.2, E4.2, E6.2) and Tmax XT7M moulded case breakers .

Q5: Does this YC release work with both AC and DC control power?

Yes. The 1SDA073685R1 is rated for 110–120 V AC/DC, covering both control power types with a single part number .

Q6: Can I install both YO and YC on the same breaker?

Yes. The YO (opening) and YC (closing) releases can both be installed, enabling full remote open/close operation when combined with a spring-charging motor .

Q7: Is this a genuine ABB product?

Yes. This is a new and original ABB factory accessory with catalog number 1SDA073685R1 .

Q8: What are the physical dimensions?

The product net width is 105 mm .

Q9: What standards does this product comply with?

The YC release complies with IEC standards and is RoHS compliant following EU Directive 2011/65/EU and Amendment 2015/863 .