ACB: 3WJ Accessories & Spares For Undervoltage release (UVR) – 3WJ9111-0AE07

Product Description

Siemens ACB Accessories – Undervoltage Release (UVR) – 3WJ9111-0AE07

The Siemens 3WJ9111-0AE07 is an Undervoltage Release (UVR) accessory designed for SENTRON 3WJ Air Circuit Breakers (ACB). It ensures that the breaker automatically trips when the supply voltage drops below a safe operating level, protecting equipment and preventing unsafe restart after power restoration.

This accessory is widely used in main LT panels, industrial switchboards, and critical power distribution systems where controlled shutdown and electrical safety are essential.

Key Features

• Siemens SENTRON ACB accessory
• Part Number: 3WJ9111-0AE07
• Type: Undervoltage Release (UVR)
• Compatible with Siemens 3WJ ACB series
• Rated control voltage: 380–415V AC
• Operating principle: Trip on voltage drop / loss of supply
• Instantaneous tripping with fast response time (ACB dependent)
• Prevents automatic restart after voltage recovery
• Plug-in modular accessory design
• High reliability for industrial switchgear systems
• Complies with IEC 60947 switchgear standards