Tekmar Controls 304P Relay Panel 326010-701 The Lennox 52M74 Rollout Switch

The Lennox 52M74 Rollout Switch is a critical safety component designed for precise over-temperature protection in Lennox furnace units and residential HVAC systems

000 hours in harsh industrial and residential environments

though a weather shield is recommended in areas with extreme ice or snow buildup to ensure the vent remains clear

Contractors rely on this Robertshaw thermal limit for its precise mechanical action and durable capillary tubing

This specific model features a fixed 200°F (93°C) set point with a manual reset mechanism

Tekmar Controls 304P Relay Panel 326010-701 The Lennox 52M74 Rollout SwitchThe Tekmar Controls 304P Relay Panel is a professional grade 4 zone switching relay engineered to manage up to four low voltage thermostats and four 120V circulating pumps in hydronic heating applications. Built for technicians who demand reliability in zoned radiant floor or baseboard systems, this hydronic zone control utilizes a microprocessor based design to coordinate calls for heat with precision. The 304P switching relay features RoomResponse