MTD20 Series Transfer Switch

The MTD20D works in conjunction with an auxiliary generator or central inverter system to power designated lighting loads up to 20 amps regardless of local switch position. The device consists of relay switching circuitry in a single, wall-mountable enclosure. The MTD20D senses the loss of normal power and, in response, switches the lighting load to a designated emergency power source. The device can be used to: (1) transfer a lighting load from normal power to generator or central inverter system power when normal power is lost; (2) bypass a wall switch to allow generator- or central inverter system-supplied lighting loads to energize when normal power is lost; (3) bypass a dimming panel and prevent backfeed to allow lighting to energize at full brightness when normal power is lost; and (4) bypass most dimming controls using an auxiliary relay contact. The MTD20D includes three dry form C contacts, which allows the user a wide variety of wiring options. For additional applications and information, contact the factory. The MTD20D is suitable for use in indoor and damp locations.