WattStopper ELCU-200-U Emergency Lighting Control Unit

The WattStopper ELCU-200-U Emergency Lighting Control Unit is a self-contained device that enables standard lighting control systems to manage emergency fixtures in concert with normal lighting circuits. It operates on 120/277 VAC, 50/60 Hz, automatically energizing emergency lighting when normal power is interrupted, while allowing occupancy sensors, relays, dimmers, wall switches, and other control devices to operate emergency fixtures during normal conditions. Commonly used across commercial, institutional, healthcare, educational, and industrial facilities to meet life-safety code requirements and reduce energy consumption, it suits office buildings, schools, universities, hospitals, retail spaces, warehouses, manufacturing plants, government buildings, and energy management systems. Technical specifications include a maximum ballast/LED load of 20A at 120/277 VAC and a maximum incandescent load of 10A at 120/277 VAC; motor rating from 1/4 HP to 1 HP (application dependent); function: Emergency Lighting Control and Power Monitoring; control method: Automatic Emergency Transfer Operation; integral test feature: Push-to-Test Button; remote activation via 24 VDC dry contact closure; mounting type: Fixture / 1/2" KO mounting; switching technology: Zero Cross Switching; operating temperature range: 32°F to 122°F (0°C to 50°C); dimensions: 1.7" H × 2.97" W × 1.64" D; compliance: UL 924, NEC, OSHA, NFPA 101, UL 2043 Plenum Rated; application type: Emergency Lighting and Life Safety Systems; equipment category: Lighting Control Relay Unit. Common replacements include Legrand Wattstopper ELCU-200, Bodine ELI-S-20, and Philips Bodine units.