ABB KXTAUVR1 Under Voltage Release Relay Module

ABB KXTAUVR1 Under Voltage Release Relay Module is an undervoltage release accessory for ABB Tmax XT1–XT4 molded‑case circuit breakers. It prevents the breaker from closing when the supply voltage falls below a preset threshold, enhancing safety in systems where voltage sag could lead to unsafe re-energization. The module is designed for XT1–XT4 frames and operates with a control voltage of 24–30 V AC or DC. It is part of ABB’s Tmax XT low‑voltage protection accessories and is suitable for UL/CSA‑listed configurations across the XT1–XT4 families. Typical installations include motor control centers, process automation panels, and industrial power distribution where reliable shutdown on voltage loss is required. Key specs: UVR module for XT1..XT4; input voltage 24–30 V AC/DC; compatible with Tmax XT series breakers; part of ABB’s KXTA accessory lineup for enhanced control of switching behavior.