The Marley Engineered Products 4506-2012-000 Plug Button is a critical replacement component designed for commercial cabinet unit heaters and architectural convection heaters

We recommend verifying the torque on all terminal screws during every preventative maintenance cycle

High Load Rating: Engineered for 30-amp HVAC contactor requirements

Designed specifically for ducts spanning 2 feet to 4 feet in width

Armstrong Furnace R33191A001 Relay The Marley Engineered Products 4506-2012-000The Armstrong Furnace R33191A001 Relay is a mission critical Time Delay Relay (TDR) designed for HVAC blower motor control and sequence timing. This SPST (Single Pole Single Throw) component is engineered to manage the delayed start and stop functions of Armstrong furnace blowers, ensuring optimal heat exchanger cooling and improved system efficiency. Operating primarily on a 24V control circuit, this relay prevents rapid cycling and reduces