GURX-277 is an undervoltage release with switch designed for right side mounting on Carlo Gavazzi GMS-32 to GMS-100 manual motor starters. It features integrated 2NO auxiliary contacts and is compatible with rotary handle operation only. The device operates with a rated control voltage of 240V 50Hz / 277V 60Hz, with pull-in voltage range of 0.85 to 1.1 × Us and drop-out voltage range of 0.7 to 0.35 × Us. Coil ratings include 8.5VA/6W for pull-in and 3VA/1.2W for hold, with 100% on-time duty cycle. This accessory is ideal for motor protection applications requiring undervoltage monitoring with auxiliary contact feedback for control circuit integration.