Dwyer Instruments 1640-0 Switch 318423-701 Standardized Specs: Features a common

Standardized Specs: Features a common 1/2-inch shaft diameter and 1100 RPM speed to maintain original airflow performance and heat transfer rates

Vibration Resistance: Designed to withstand the mechanical stresses and thermal expansion common in condenser and evaporator line sets

the R120AAA-701 features high-grade electrical contacts capable of handling the inductive loads characteristic of PSC motors and single-phase condenser fan motors

The brass body construction provides structural integrity

Common Questions What is the torque rating for the H-series cap screws

Dwyer Instruments 1640-0 Switch 318423-701 Standardized Specs: Features a commonThe Dwyer Instruments 1640 0 Switch is a high precision differential pressure switch engineered for specialized HVACR applications requiring floating contact null switch logic. Unlike standard snap acting switches, the 1640 series utilizes a single pole double throw (SPDT) floating contact design to provide two distinct actuation pointshigh and lowwith a defined "null" zone in between. This makes it an ideal solution for motorized damper control and