Maxitrol SC11-B Signal Conditioner Els PW 17895 The York S1-026-34028-005 Limit Switch

The York S1-026-34028-005 Limit Switch is a mission-critical OEM replacement furnace part designed for high-limit protection in gas furnaces and air handling units

It operates purely on pressure differentials between the two input ports

This 10A pilot duty relay features a single-pole single-throw (SPST) configuration

The Weil McLain 383-500-630 Gauge Assembly is a high-precision OEM replacement component engineered specifically for Weil McLain Ultra series boilers

OEM Compatibility: Designed specifically for Reznor unit heaters

Maxitrol SC11-B Signal Conditioner Els PW 17895 The York S1-026-34028-005 Limit SwitchThe Maxitrol SC11 B Signal Conditioner is a track mounted interface designed for veteran technicians needing to integrate modern Building Automation Systems (BAS) with Selectra modulating valves. This analog signal conditioner provides a clean 0 20 VDC output signal, enabling precise burner control for both direct fired and indirect fired gas applications. By converting a standard controller input, the SC11 B allows you to drive multiple modulating