SST4-PB Soft Start Timer

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SST4-PB 4kW Soft Start Timer Control for Infrared Heating

Product Code: SST4-PB

The SST Soft Start Timer is a fully weatherproof solution for controlling up to 4kW of electric heaters (such as infrared quartz halogen). It provides timed heat on demand delivering energy savings of up to 30%* by switching off automatically when unattended. The timer will also prolong the life of the heating elements through soft-start and soft-stop technology, thus reducing maintenance costs.

The SST4-PB is operated using an integral pushbutton, which features an LED indicator to ensure the button is easily located in the dark.  When triggered, power is gradually applied to the heater over 3 seconds so avoiding large inrush currents and reducing stress to both the heating element and the electrical supply. The heater remains powered for the pre-set time period, set by an internal dial (fully adjustable from 5 to 60 minutes), before being automatically turned off in a similar manner.

The integral LED blinks to notify room users when there is less than 1 minute remaining of the time delay before the heater automatically switches off. The time delay may be reset with a brief press of the pushbutton. The timer can be cancelled at any time with a prolonged button press.

The unit is designed for outdoor installation, rated to IP65 and housed in a robust high-quality polycarbonate enclosure. All connections are made through preinstalled cable glands, and wall mounting is achieved via pre-drilled holes in the enclosure which maintain its ingress protection rating.

The SST4-PB can control a maximum load of 4kW.

This 4kW Soft Start Timer is ideally suited to a number of applications, including retrofitting to existing equipment to achieve significant savings on energy usage and lamp replacement costs.

Ideal applications:

  • Pub and beer gardens
  • Restaurants and Hotels
  • Patio and gardens
  • Smoking shelters
  • Outdoor event heaters
  • Warehouse infrared halogen heaters
  • Workshops
  • Garages and hangers
  • Churches
  • Agriculture and stabling

(*estimates are based on typical usage estimates)

Download product datasheet (2010Kb)

Product features:

  • 3 year guarantee
  • Energy-saving product
  • IP rated enclosure
  • Money-saving product
  • Selectable timer / timeout
  • Suitable for heating control
  • Suitable for lighting control

£78.25 (ex. VAT)

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IPTDS2 - IP65 Time Delay Switch 2-Wire

IPTDS2 IP65 Weatherproof Time Delay Switch 2 Wire £39.00

Product Code: IPTDS2

The IP65 Rated Time Delay Switches have been designed to switch external lighting and heating on at the press of a button and automatically off after a pre-determined duration has elapsed. read more

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SST6-RPB 6kW Soft Start Timer with Remote Pushbutton Input for Infrared Heating £89.25

Product Code: SST6-RPB

The SST6-RPB is a fully weatherproof Soft Start Timer to control up to 6kW infrared and quartz halogen heating loads while prolonging the life of heating elements and reducing energy consumption by up to 30%.  Designed for remote activation this timer is equipped with low voltage terminals which are isolated from the mains to provide a safe connection for a remote pushbutton. read more

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manfactured to order - please allow up to 7 working days for delivery

Power supply

220V – 240V AC 50Hz (live/neutral/earth)

Load capacity

35W – 4,000W (resistive)

Power consumption (control circuit)

<1W (standby), 2W (active)

Internal fuse (for control circuit)

250V F1A (fast blow), 5 x 20mm glass cartridge

Output type

Triac soft-start/stop with relay bypass (switched live, common neutral)

Cable gland capacity

Supply/load: M20, for 7-13mm dia. round cable

Time delay

5 to 60 minutes (continuously adjustable)

Operating temperature

-10°C to +40°C

Ingress protection



5 years




160mm x 80mm x 55mm