Honeywell L456A 1008 Temperature Controller

The Honeywell L456A-1008 is a mechanical temperature controller designed for industrial heating and process systems, delivering precise control in the 240°F to 385°F (116°C–196°C) range via a remote bulb/capillary sensing element and a manual setpoint dial. It uses an SPDT electromechanical switch and is housed in a metal enclosure with a protective cover, suitable for panel or surface mounting depending on configuration, with a voltage rating up to 250 VAC and a typical 2 W pilot-duty power draw. Designed as a legacy Honeywell component, it is commonly installed in boilers, industrial ovens, furnaces, drying equipment, and other process heating systems where high-temperature control is essential. For retrofits or replacements, it is often matched to compatible Honeywell replacements such as the L4006A, T675F, and T991A models.