HVAC Controls (Heating, Ventilation and Air Conditioning)


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Heater boost switch

For control of electric heating loads (or other electric loads).

Switches heating load on for a limited time only. Pressing the button selects each time lag choice in turn. The heating then remains on for the chosen time lag before switching off automatically. The button can also be used at any time for selecting a different time lag or for switching off.

Bespoke versions are available on request.

Product code: TLSW HB

A heater boost switch with longer time lag is also available (order code TLSW HB1246).

Multi-selectable time lag switches (TLSW MS and TLSW MS1246) are also available.


Selectable time lag: ¼ hour, ½ hour, 1 hour, 2 hours
Loading: Up to 13 amps (3000W) of resistive load, or 6 amps (1500W) of transformer load
Dimensions: 86 x 86 x 12mm. Wall box depth: 25mm