![[LS ELECTRIC] — Metasol MMS RUX Undervoltage Release with Alarm (6 Voltages)](https://img.prosourcemro.com/2026/04/001-1511-1024x731.png)
Accessories
LS ELECTRIC
[LS ELECTRIC] — Metasol MMS RUX Undervoltage Release with Alarm (6 Voltages)
Family ID: LSE-MMS-ACC-RUX
RUX combines undervoltage release function with built-in alarm contact for remote signaling of undervoltage events. IMPORTANT: NOT compatible with MMS-32S — use with MMS-32H/HI or 63/100AF only. Pickup 0.85~1.1×Us, opening time 20ms. 6 voltages available. Right side-mount, single unit, mutually exclusive with RS and RU. After undervoltage trip, MMS handle must be moved to OFF position before re-energizing.
6 product codes available in this family
Product Codes & Specifications
| Product Code | Description | Brand | Spec | ||
|---|---|---|---|---|---|
| RUX-AC24 | RUX Undervoltage Release with Alarm Switch, 24V 50Hz / 28V 60Hz | LS ELECTRIC | Type: Undervoltage Release with Alarm Switch (RUX) | Function: Trips MMS on undervoltage AND provides alarm contact | Mount: Right side-mount (single unit only) | Operating Voltage: 24V 50Hz / 28V 60Hz | Compatible MMS: MMS-32H/HI, MMS-63S/H/HI, MMS-100S/H/HI | Incompatible MMS: MMS-32S (NOT supported) | Pickup Voltage: 0.85~1.1 × Us | Drop-out Voltage: 0.7~0.35 × Us | Inrush Power: 8.5VA / 6W | Holding Power: 3VA / 1.2W | Opening Time: 20ms | Weight: 120g | Alarm Contact: Built-in (D1-07 / D2-08 terminals) | Mutual Exclusion: Cannot be installed simultaneously with RS or RU | ||
| RUX-AC110 | RUX Undervoltage Release with Alarm Switch, 110V 50Hz / 120V 60Hz | LS ELECTRIC | Type: Undervoltage Release with Alarm Switch (RUX) | Function: Trips MMS on undervoltage AND provides alarm contact | Mount: Right side-mount (single unit only) | Operating Voltage: 110V 50Hz / 120V 60Hz | Compatible MMS: MMS-32H/HI, MMS-63S/H/HI, MMS-100S/H/HI | Incompatible MMS: MMS-32S (NOT supported) | Pickup Voltage: 0.85~1.1 × Us | Drop-out Voltage: 0.7~0.35 × Us | Inrush Power: 8.5VA / 6W | Holding Power: 3VA / 1.2W | Opening Time: 20ms | Weight: 120g | Alarm Contact: Built-in (D1-07 / D2-08 terminals) | Mutual Exclusion: Cannot be installed simultaneously with RS or RU | ||
| RUX-AC220 | RUX Undervoltage Release with Alarm Switch, 220-230V 50Hz / 240-260V 60Hz | LS ELECTRIC | Type: Undervoltage Release with Alarm Switch (RUX) | Function: Trips MMS on undervoltage AND provides alarm contact | Mount: Right side-mount (single unit only) | Operating Voltage: 220-230V 50Hz / 240-260V 60Hz | Compatible MMS: MMS-32H/HI, MMS-63S/H/HI, MMS-100S/H/HI | Incompatible MMS: MMS-32S (NOT supported) | Pickup Voltage: 0.85~1.1 × Us | Drop-out Voltage: 0.7~0.35 × Us | Inrush Power: 8.5VA / 6W | Holding Power: 3VA / 1.2W | Opening Time: 20ms | Weight: 120g | Alarm Contact: Built-in (D1-07 / D2-08 terminals) | Mutual Exclusion: Cannot be installed simultaneously with RS or RU | ||
| RUX-AC240 | RUX Undervoltage Release with Alarm Switch, 240V 50Hz / 277V 60Hz | LS ELECTRIC | Type: Undervoltage Release with Alarm Switch (RUX) | Function: Trips MMS on undervoltage AND provides alarm contact | Mount: Right side-mount (single unit only) | Operating Voltage: 240V 50Hz / 277V 60Hz | Compatible MMS: MMS-32H/HI, MMS-63S/H/HI, MMS-100S/H/HI | Incompatible MMS: MMS-32S (NOT supported) | Pickup Voltage: 0.85~1.1 × Us | Drop-out Voltage: 0.7~0.35 × Us | Inrush Power: 8.5VA / 6W | Holding Power: 3VA / 1.2W | Opening Time: 20ms | Weight: 120g | Alarm Contact: Built-in (D1-07 / D2-08 terminals) | Mutual Exclusion: Cannot be installed simultaneously with RS or RU | ||
| RUX-AC380 | RUX Undervoltage Release with Alarm Switch, 380-400V 50Hz / 440-460V 60Hz | LS ELECTRIC | Type: Undervoltage Release with Alarm Switch (RUX) | Function: Trips MMS on undervoltage AND provides alarm contact | Mount: Right side-mount (single unit only) | Operating Voltage: 380-400V 50Hz / 440-460V 60Hz | Compatible MMS: MMS-32H/HI, MMS-63S/H/HI, MMS-100S/H/HI | Incompatible MMS: MMS-32S (NOT supported) | Pickup Voltage: 0.85~1.1 × Us | Drop-out Voltage: 0.7~0.35 × Us | Inrush Power: 8.5VA / 6W | Holding Power: 3VA / 1.2W | Opening Time: 20ms | Weight: 120g | Alarm Contact: Built-in (D1-07 / D2-08 terminals) | Mutual Exclusion: Cannot be installed simultaneously with RS or RU | ||
| RUX-AC415 | RUX Undervoltage Release with Alarm Switch, 415-440V 50Hz / 460-480V 60Hz | LS ELECTRIC | Type: Undervoltage Release with Alarm Switch (RUX) | Function: Trips MMS on undervoltage AND provides alarm contact | Mount: Right side-mount (single unit only) | Operating Voltage: 415-440V 50Hz / 460-480V 60Hz | Compatible MMS: MMS-32H/HI, MMS-63S/H/HI, MMS-100S/H/HI | Incompatible MMS: MMS-32S (NOT supported) | Pickup Voltage: 0.85~1.1 × Us | Drop-out Voltage: 0.7~0.35 × Us | Inrush Power: 8.5VA / 6W | Holding Power: 3VA / 1.2W | Opening Time: 20ms | Weight: 120g | Alarm Contact: Built-in (D1-07 / D2-08 terminals) | Mutual Exclusion: Cannot be installed simultaneously with RS or RU |
