this relay’s 20A resistive rating at 277Vac ensures reliable switching under heavy inductive and resistive loads

an electrical suppressor to mitigate signal interference

Adjustments are made via the front-facing mechanism

Direct OEM Fitment: Eliminates the risks associated with generic HVAC orifice sizing

Dwyer Instruments A-301 Pressure Tip 318172-701 this relay’s 20A resistive ratingThe Dwyer Instruments A 301 Static Pressure Tip is an essential field component for technicians requiring precise differential pressure measurements in high velocity ductwork. Engineered for permanent installation, this angled sensor features a 4 inch insertion depth designed to position the sensing orifice away from duct walls, effectively minimizing the measurement errors typically caused by air turbulence or aspiration. Constructed for durability,