1SDA101983R1 ABB UVD XT5-XT6 24–30 V AC/DC Undervoltage Release Delay Device

Why Choose the ABB UVD XT5-XT6 24–30 V AC/DC 1SDA101983R1?

The ABB 1SDA101983R1 is an electronic time-delay device for undervoltage releases designed for ABB SACE Tmax XT5 and XT6 circuit breakers. Operating from a 24–30 V AC/DC supply, the UVD accessory is designed to work with the circuit breaker's undervoltage release and introduce a controlled delay before an undervoltage condition results in breaker opening.

Undervoltage releases are used to open a circuit breaker when their control supply falls below the required operating level or is lost. Adding a UVD time-delay device helps prevent unnecessary operation caused by brief voltage disturbances, making the arrangement useful in installations where short-duration supply dips should not immediately disconnect the protected circuit.

This version of the UVD is specifically intended for the ABB SACE Tmax XT5 and XT6 platforms and accepts both AC and DC control supplies across the 24–30 V range. It is an ABB electrical accessory for integration with compatible undervoltage-release arrangements in industrial, commercial and infrastructure switchgear.

Key Advantages

• Genuine ABB SACE Tmax XT electrical accessory.
• Electronic time-delay device for a compatible undervoltage release (UVR).
• Designed specifically for ABB SACE Tmax XT5 and XT6 circuit breakers.
• 24–30 V AC rated control-voltage range.
• 24–30 V DC rated control-voltage range.
• Helps avoid immediate breaker operation during brief undervoltage disturbances.
• Supports controlled undervoltage protection in low-voltage switchgear.
• Designed for integration with ABB's Tmax XT circuit-breaker accessory system.

Key Features

• ABB UVD electronic time-delay device.
• Designed for undervoltage-release applications.
• Compatible with SACE Tmax XT5 and XT6.
• 24–30 V AC/DC control-voltage range.
• Electronic delay functionality.
• Part of the ABB Tmax XT electrical accessory range.
• Suitable for low-voltage circuit-breaker installations.
• Designed to complement compatible ABB undervoltage releases.
• IEC and UL certification.
• Associated with IEC 60947-2 circuit-breaker installations.

Controlled Undervoltage Protection for Circuit Breakers

An undervoltage release is used to trip a circuit breaker when its control supply falls below an acceptable level or disappears. This functionality can be important in electrical systems where equipment must automatically disconnect following loss of the control supply, but immediate operation in response to every momentary voltage dip may be undesirable.

The ABB UVD electronic time-delay device is designed to introduce a delay into a compatible undervoltage-release arrangement. This allows the system to tolerate brief voltage disturbances before the undervoltage release operates, helping provide more controlled circuit-breaker behaviour in industrial power distribution, automation and infrastructure applications.

Typical Applications

• ABB SACE Tmax XT5 and XT6 circuit-breaker installations.
• Undervoltage-release control circuits.
• Industrial low-voltage switchboards.
• Commercial power distribution systems.
• Industrial automation and process installations.
• Infrastructure electrical distribution systems.
• Applications subject to short-duration control-voltage disturbances.
• Switchgear requiring delayed undervoltage-release operation.