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Honeywell MT4-230S-NO Thermoelectric Actuator 230V with Aux. Switch

Honeywell

Honeywell MT4-230S-NO Thermoelectric Actuator 230V with Aux. Switch

Honeywell MT4-230S-NO thermoelectric actuator, 230V, supplied with an auxiliary switch.

At a glance

  • Also known as 4200385
Manufacturer part no.
MT4-230S-NO
Showing prices

£78.55

£65.46 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Honeywell MT4-230S-NO is a thermoelectric actuator operating on a 230V supply and fitted with an auxiliary switch. It is a control component used to drive compatible valve bodies in heating and hot water circuits, opening or closing the valve in response to the signal applied to the actuator. The auxiliary switch provides a separate switching function alongside the actuator's own movement.

Before you order

  • Confirm the existing actuator is a 230V unit and that the circuit can supply it before ordering.
  • Check whether the installation requires the auxiliary switch function, as this variant includes it.
  • Verify the part number MT4-230S-NO against the actuator being replaced.
  • Isolate the electrical supply to the circuit before removing or fitting the actuator.

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.