Ashcroft D420V Snap Action Switch is a compact, precision snap‑action electrical switch manufactured by Ashcroft. It is used as the switching element in Ashcroft’s D‑series differential pressure switches, delivering a fast, decisive change in electrical state when the differential pressure reaches the setpoint, enabling reliable control of relays, alarms, or other control circuitry in industrial applications. As part of the D‑series family, the D420V is designed for robust operation in challenging environments and is intended for integration within differential pressure sensing assemblies used in process monitoring, HVAC, and related instrumentation setups.
