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ABB Tmax XT Circuit Breaker Accessory Under Voltage Release 480-525Vac 1SDA066394R1 UVR XT1..XT4 480-525VAC

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ABB Tmax XT Circuit Breaker Accessory Under Voltage Release 480-525Vac 1SDA066394R1 UVR XT1..XT4 480-525VAC

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Category Circuit Breaker Accessories Brand ABB Condition New

Specifications

Country of Origin	Italy
Range	Tmax XT
Brand	ABB
Height	60mm
Model	1SDA066394R1 UVR XT1..XT4 480-525VAC
Depth	140mm
Width	110mm
Standard	IEC 60947-2
Series	Tmax XT
Standards/Approvals	IEC, RoHS
Rated AC Voltage	525V ac

Key Features

Guarantees opening when voltage drops between 70% to 35% of nominal.
Allows closing after tripping when voltage exceeds 85% of nominal.
Prevents closure of circuit-breaker and main contacts if release is not energized.
Enables remote emergency opening via connected opening button.
Designed for easy fitting on Tmax XT circuit breakers.
Complies with IEC 60947-2 and RoHS standards.
Manufactured in Italy ensuring high quality.

Product Description

ABB 1SDA066394R1 UVR XT1..XT4 480-525VAC is an under voltage release accessory designed for Tmax XT series circuit breakers. It functions to trigger circuit breaker opening during power failure or significant voltage drop between 70% and 35% of the nominal voltage, thus protecting electrical installations from undervoltage conditions.

Once tripped, the circuit breaker can only be reclosed if the supply voltage recovers above 85% of the nominal voltage, ensuring safe operation and minimizing risk of electrical faults. When the under voltage release (UVR) is de-energized, the circuit breaker and its main contacts cannot be closed, providing an additional safety mechanism.

The accessory also supports remote-controlled emergency opening by connecting an external opening button to the UVR, enhancing operational flexibility and emergency response in industrial or commercial electrical systems.

This UVR accessory is rated for AC voltage between 480 and 525 volts, compatible with Tmax XT1, XT2, XT3, and XT4 circuit breaker models. Its installation is straightforward, intended for easy fitting onto Tmax XT breakers.

Compliance with IEC 60947-2 ensures adherence to international standards for low-voltage switchgear and controlgear, while conformance with RoHS directives confirms restriction of hazardous substances, supporting safer and environmentally responsible use.

Manufactured in Italy, this product brings quality and reliability for demanding electrical automation and protection applications in industrial, commercial, and infrastructure sectors.

Rated AC voltage range: 480 to 525 Vac suitable for Tmax XT series. Enables protected circuit-breaker tripping on under voltage events. Supports remote emergency opening functionality. Easy-to-fit robust accessory for MCCB protection enhancement.

Meets IEC 60947-2 electrical safety standards. RoHS compliant for hazardous substance restriction. Dimensions: 60mm height x 110mm width x 140mm depth. Country of origin: Italy.

Explore more high-quality Circuit Breaker Accessories and components in the Electronics & Electricals category at EnvMart for reliable electrical protection and automation solutions.

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Frequently Asked Questions

This under voltage release accessory is rated for an AC voltage range of 480 to 525 volts, making it suitable for use with Tmax XT series circuit breakers.

It is compatible with Tmax XT1, XT2, XT3, and XT4 circuit breaker models, enhancing their functionality with under voltage protection.

The circuit breaker will open when the voltage drops between 70% and 35% of the nominal voltage, providing protection against undervoltage conditions.

Once tripped, the circuit breaker can only be reclosed if the supply voltage exceeds 85% of the nominal voltage, ensuring safe operation before reconnection.

Yes, it enables remote emergency opening by connecting an external opening button, which enhances operational flexibility in emergency situations.

The dimensions are 60mm in height, 110mm in width, and 140mm in depth, allowing for straightforward installation on compatible circuit breakers.

It complies with IEC 60947-2 standards for low-voltage switchgear and controlgear, and it is RoHS compliant, confirming the restriction of hazardous substances.

This under voltage release accessory is manufactured in Italy, ensuring adherence to quality standards in its production.

When the under voltage release is de-energized, the circuit breaker and its main contacts cannot be closed, adding an additional safety mechanism.

The installation is straightforward and designed for easy fitting onto Tmax XT circuit breakers, facilitating quick setup.

Its primary purpose is to trigger circuit breaker opening during power failures or significant voltage drops, protecting electrical installations from undervoltage conditions.

The model number is 1SDA066394R1 UVR XT1..XT4 480-525VAC, identifying it specifically within the Tmax XT series.