Phone icon

ThermoSphere Contactor Snubber Unit

£131.69£187.85 (inc VAT)

SKU: N/A Categories: ,


The ThermoSphere Contactor Snubber Unit is an accessory for large electric underfloor heating circuits over 16A/3600W that are run on a single ThermoSphere thermostat.

A single ThermoSphere thermostat is only rated for a maximum load of 16A/3600W, which roughly equates to 23m². So if the total load of your underfloor heating circuit exceeds 16A/3600W, and you want to control it from one thermostat, then you must install a suitably rated Contactor snubber.

The ThermoSphere Contactor Snubber is available in 3 different capacities: 25 Amp, 40 Amp and 63 Amp.

For instructions on how to wire up the snubber unit, please refer to the video guide below or the product datasheet, linked below.


  • Control high load heating systems
  • Snubber for ultimate protection
  • IP30 rated safe for home use
  • Up to 63A maximum load

Technical Data:
Dimensions (mm): 180 x 110 x 82
Double insulated: Yes
Mounting: Surface mount
Protection rating: IP30

Product Datasheet

Click here to view this product on the manufacturers website.

Additional information

Weight N/A

25A / 5700W, 40A / 9000W, 63A / 14440W