The York S1-025-47853-000 Wiring Harness is a critical OEM replacement component designed specifically for two-stage furnace and air handler control systems

this split-core current sensor accurately distinguishes between normal amperage fluctuations caused by frequency changes and genuine belt loss detection or mechanical failures

allowing for efficient brazing without warping the internal valve components or compromising the mechanical refrigerant valve functionality

The integration of a silicone seat and a fabric-reinforced molded diaphragm effectively isolates the spring chamber from water contact at all times

protecting internal windings from moisture and debris common in walk-in coolers and freezers

Siemens Industrial Controls 3RH1921-1EA20 Contact 320788-704 The York S1-025-47853-000 Wiring HarnessThe Siemens 3RH1921 1EA20 is a high performance SIRIUS auxiliary switch block designed for veteran contractors and electrical technicians. This side mount auxiliary contact features a 2NO (Normally Open) configuration, specifically engineered for seamless lateral integration with SIRIUS 3RT1 contactors and 3RH1 control relays. Built to withstand rigourous industrial environments, it supports frames from sizes S0 to S12, providing consistent feedback