TELE Controls Inc. Monitor - Relay Output E1PF480Y/277VSY10

The E1PF480Y/277VSY10 from Quarktwin Technology Ltd. is a voltage monitoring device designed for 3-phase mains applications. It monitors phase sequence, phase failure, and asymmetry, with adjustable settings for asymmetry and tripping delay ranging from 0.1 seconds to 20 seconds. The device features a single changeover contact with a rated voltage of 250V a.c. and a switching capacity of 1250VA at 5A. The product is housed in a self-extinguishing plastic casing with an IP40 rating and is suitable for DIN-rail mounting. It operates within a supply voltage range of 208/120V to 480/277V and has a rated frequency of 48 to 63Hz. The device includes multiple LED indicators for supply voltage, failure, and relay output status. With a mechanical life of 20 million operations and an electrical life of 200,000 operations at a resistive load, the E1PF480Y/277VSY10 is designed for reliability in demanding environments. It can operate in ambient temperatures from -25°C to +70°C and has a pollution degree of 2. This product is suitable for applications requiring precise monitoring of voltage conditions in industrial settings.