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Honeywell Thermoelectric Actuator MT4-230-NO 230V

Honeywell

Honeywell Thermoelectric Actuator MT4-230-NO 230V

Honeywell MT4-230-NO thermoelectric actuator for 230V mains operation, normally open.

At a glance

  • Also known as 4200375
Manufacturer part no.
MT4-230-NO
Showing prices

£50.40

£42.00 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 MT4-230-NO is a thermoelectric actuator designed for 230V AC mains operation. It drives the valve it is mounted to using a thermal element rather than a motor, and it is configured as normally open (NO), so the valve sits open until the actuator is powered. It is supplied as the actuator head only, identified by part number MT4-230-NO.

Before you order

  • Confirm the valve body you are working on takes an MT4 series actuator head and that the mounting interface matches.
  • Check that the system control wiring supplies 230V to the actuator, not a low-voltage output.
  • Verify the required fail position — this unit is normally open, so an NC version is needed where the valve must close on power loss.
  • Match the part number MT4-230-NO against the existing actuator or the appliance's parts listing before ordering.

Not sure which part?

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