Products tagged with 'spst auxiliary switch'

The Danfoss HPA2 (087N6579) is a robust 230 V, 2‑port spring‑return actuator with SPST auxiliary switch designed for H‑series motorised shoe valves. It features a manual override lever for filling, fast opening (≤ 35 s) and closing (≤ 20 s), and a voltage‑free SPST contact — ideal for controlling central heating or hot water flow in domestic or commercial systems.

The Danfoss HSA3 (087N6587) is a reliable 230 V, 3-port mid-position spring-return actuator for H-series motorised valves. Featuring an internally-linked SPST auxiliary switch, it provides precise control over heating and hot water flow. Its fast response (≤ 35s open / ≤ 20s close) and manual override lever make it a dependable choice for upgrades or replacements in domestic and commercial heating systems.