1SDA104963R1 ABB YU-C XT6 W 48…60 V AC/DC Undervoltage Release

Why Choose the ABB 1SDA104963R1 YU-C XT6 W 48...60 V AC/DC Undervoltage Release?

The ABB 1SDA104963R1 is a YU-C wired undervoltage release designed specifically for ABB SACE Tmax XT6 withdrawable circuit breakers. Rated for 48...60 V AC/DC, it provides voltage-dependent circuit-breaker operation for installations where the breaker must respond automatically when its control supply falls below the required operating level.

ABB identifies this accessory as an undervoltage release (UVR) for the XT6 frame. The wired YU-C configuration is intended for the withdrawable circuit-breaker execution, providing a manufacturer-engineered means of integrating undervoltage response into industrial switchboards, power-distribution assemblies and automated electrical systems.

With support for both 48...60 V AC and 48...60 V DC supplies, the 1SDA104963R1 provides flexibility for installations using AC or DC auxiliary control power. Its genuine ABB construction ensures compatibility with the specified SACE Tmax XT6 platform and helps maintain a coordinated circuit-breaker accessory system.

Key Advantages

• Genuine ABB SACE Tmax XT6 electrical accessory.
• YU-C wired undervoltage release for voltage-dependent breaker operation.
• Designed specifically for XT6 withdrawable circuit breakers.
• Supports both 48...60 V AC and 48...60 V DC control supplies.
• Enables automatic breaker response when the release supply falls below the required operating level.
• Manufacturer-engineered for integration with the ABB SACE Tmax XT6 platform.

Key Features

• ABB SACE Tmax XT accessory range.
• YU-C undervoltage release.
• Wired configuration.
• XT6 frame compatibility.
• Designed for withdrawable (W) circuit breakers.
• 48...60 V AC/DC rated voltage.
• Suitable for AC or DC auxiliary control systems.
• Provides undervoltage-dependent circuit-breaker operation.
• Designed in accordance with applicable IEC and UL circuit-breaker standards.

Reliable Undervoltage Operation for Tmax XT6 Circuit Breakers

An undervoltage release provides a voltage-sensitive interface with the circuit-breaker mechanism. During normal service the release is supplied with the appropriate control voltage; when that voltage falls sufficiently, the release acts on the circuit-breaker mechanism. This makes undervoltage releases useful where circuit operation needs to depend on the availability of a suitable auxiliary control supply.

The ABB 1SDA104963R1 provides this functionality specifically for the SACE Tmax XT6 withdrawable platform. Its wired construction and dual 48...60 V AC/DC rating make it suitable for a wide range of industrial control architectures while retaining manufacturer-matched compatibility with the XT6 circuit-breaker system.

Typical Applications

• ABB SACE Tmax XT6 withdrawable circuit breakers.
• Industrial low-voltage switchboards.
• Power distribution and protection panels.
• Systems requiring circuit-breaker response to auxiliary supply undervoltage.
• Automated machinery and process-control installations.
• Switchgear using 48...60 V AC/DC auxiliary control supplies.