Trane UHEC-DCS403 (DCS403/5100) is a 3-pole, 40 A unit-mounted safety disconnect switch rated for 120–600 VAC, designed to be installed directly on Trane UHEC Series electric unit heaters and 5100 Series heaters to provide a local power isolation point. Factory or field installed, it enables ON/OFF operation for maintenance, servicing, and lockout/tagout in commercial HVAC and industrial heating environments. Manufactured by Trane / TPI Corporation, this disconnect switch supports code-compliant electrical isolation in commercial buildings, warehouses, and manufacturing facilities.
