Name: Caleffi 656354 : TwisTop Thermo-Electric Actuator 24V w/ Auxiliary Microswitch
Brand: Caleffi
SKU: 656354
Price: 107.12 USD
Availability: InStock

Description
Warranty Information
Features

Warranty2-Year Limited

The Caleffi 656354 is a thermo-electric actuator, 24V.

Best for adding or replacing actuation on an installed Caleffi zone valve body.

Specifications transcribed from Caleffi North America published technical literature. Last verified August 2026.

Warranty

Caleffi 2-Year Limited Warranty. Caleffi North America warrants this product free from defects in material and workmanship for two years from the date of transfer of ownership - the point Caleffi hands the goods to the first carrier - subject to correct installation and use. Coverage runs to the purchaser identified as "Ship To" on Caleffi's order confirmation and is subject to the eligibility conditions, exclusions and remedies set out in Caleffi North America's published Limited Warranty and Terms and Conditions of Sale. This summary is provided for convenience and does not replace those documents.

Key Features

Thermo-Electric Actuation

A heated element drives the valve open or closed on a low-voltage signal, silently and without a motor.

TwisTop Quick Mounting

The actuator twists onto the valve body without tools, so it can be fitted or swapped without breaking the piping.

Auxiliary Microswitch Included

An integral auxiliary microswitch rated 5 A at 24 V confirms actuator position, allowing circulator or boiler interlock so the pump runs only once the valve has opened.

Technical Specifications

Product Type	Thermo-Electric Actuator
Ambient temperature range	32 to 122 °F (0 to 50 °C)
Power consumption at full capacity	3 W
Protection class	IP 40
Supply cable length	0.8 m
Starting current	<= 250 mA
Auxiliary microswitch contact rating (24 V)	5 A

Documentation

Instruction sheet (Italian)
68180

Instruction sheet
68457

Frequently Asked Questions

What does Caleffi 656354 do?

It is a thermo-electric actuator. A heated element opens or closes the valve on a low-voltage signal, silently and without a motor, and it mounts directly to a Caleffi zone valve body.

Caleffi 2-Year Limited Warranty. Caleffi North America warrants this product to be free from defects in material and workmanship for two years from the date of transfer of ownership (when the goods are handed to the first carrier), when installed and operated in accordance with published instructions. Coverage runs to the purchaser identified as "Ship To" on Caleffi's order confirmation and is subject to the eligibility conditions, exclusions and remedies set out in Caleffi North America's published Limited Warranty and Terms and Conditions of Sale. This summary is provided for convenience and does not replace those documents. ZOT Supply is an authorized Caleffi distributor.