Danfoss HSA3 3-Port Mid-Position Valve Actuator 087N6587

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.