ABB – 1SDA066399R1 – UVR-C XT1..XT4 Fixed-Plug Undervoltage Release

The ABB SDAR (UVR‑C XT..XT) is a fixed‑plug undervoltage release accessory designed for installation in ABB Tmax XT through XT molded-case circuit breakers. It instantly trips the breaker when line voltage drops below a preset threshold and prevents automatic reclosure until the supply voltage stabilizes, ensuring reliable protection for industrial electrical systems.

Key Features:

• Model: SDAR (UVR‑C XT..XT F/P)

• Function: Fixed-plug Undervoltage Release (UVR)

• Rated Voltage: – V AC / – V DC  

• Designed for fixed or removable breakers (F/P) in XT, XT, XT, XT ranges  

• Compliance: IEC ‑

• Physical Length:  mm