Honeywell Thermal Solutions FSG L408J1025 Pressure and Limit Controller

Experience precise control with the Honeywell Thermal Solutions FSG L408J1025 Pressure and Limit Controller, a reliable solution for automatic limit control in heating systems. This diaphragm-operated, adjustable subtractive differential controller handles pressure in liquids, air, and gas with an operating range of 0 to 16 oz/in2 and a differential range of 2 to 16 oz/in2.

Built for commercial applications, it features SPST two-circuit contacts and robust electrical ratings, plus UL and CSA approvals for safety and compliance. The compact enclosure (4-1/2 in W x 4-1/2 in D x 5-1/8 in H) with a clear plastic cover and gray finish fits well in mechanical rooms and control panels.

Mounting is versatile with 1/4 in female threaded connections or surface mounting, and use across a wide temperature range from -35 to 150 deg F. The controller adopts auto recycle and make-on-pressure-rise switching to ensure dependable automatic limit control in heating systems.

• Type: Adjustable Subtractive Differential, Diaphragm-operated
• Operating range: 0–16 oz/in2; differential 2–16 oz/in2
• Media: Liquid, Air, Gas
• Contacts: SPST, 2 circuits; 120V AC 8A full load / 48A locked rotor; 240V AC 5.1A full load / 30.6A locked rotor
• Connection: 1/4" female threaded
• Ratings: UL, CSA approvals
• Temperature: -35 to 150°F
• Mounting: 1/4" female threaded or surface mount