Laars Heating Systems E2328000 Relay 319852-301 Professional contractors use the S1-FRSR60

Professional contractors use the S1-FRSR60 time-delay fuse because non-time-delay alternatives often blow during the initial inrush current of HVAC compressors

maintaining a normally closed circuit that opens upon reaching the 160°F high-limit threshold to prevent terminal overheating

essential for maintaining indoor air quality sensors in harsh environments

this unit integrates seamlessly into 48-frame mounting configurations and connects via standard 120V harnesses without the need for field programming or additional wiring modifications

Generic boards often lack the specific logic required for multi-stage compressor control

Laars Heating Systems E2328000 Relay 319852-301 Professional contractors use the S1-FRSR60The Laars E2328000 Relay is a mission critical DPDT switching relay designed for demanding hydronic and steam boiler control circuits. Engineered for 120V AC input, this Double Pole Double Throw component provides reliable isolation and simultaneous control of multiple high load circuits, such as circulating pumps, blowers, or localized zone valves. In the field, this relay is frequently utilized within Laars heating systems to interface low voltage