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Electrisaver SIR021

£45.60 £38.00
In stock
Delivery Time:
48 Hour Delivery
2 Years
Quick Code:
Order Line:
01977 663331
  • Provides energy saving failsafe
  • Big energy saving device
  • Compact and easy to install
  • Simple push button operation to set timer

Energy saver, ideal for use in Hotels, Offices, Student Accommodation


The Electrisaver push button boost timer can be used to control immersion elements and other electrical appliances up to 3kW or as an override / extension timer for central heating systems.

Provides energy saving fail-safe, Ideal for use in hotels, offices, student accommodation or in the home where electric heating appliances may be left on or forgotten.

Equipment such as immersion heaters and panel heaters are often needed for relatively short periods but overlooked and left active.

The Horstmann ‘Electrisaver’ time switch is an easy-to-use, energy and cost saving device.

Electrisaver is a fixed, push button electronic timer for short term power boosting 30-60 and 120 minute settings.

It has a 3kW load switching capability which makes it ideal for electrical equipment such as heaters that is likely to be left powered when not required.

Compact and easy to install, Electrisaver can be flush or surface mounted with a single gang moulded box.

  • Suitable for heated towel rails, immersion heaters, panel heaters and oil filled heaters
  • Electrisaver is a fixed, push button electronic timer for short term power boosting
  • Provides energy saving failsafe
  • Big energy saving device
  • Compact and easy to install
  • Simple push button operation to set timer
  • SIR021 with its 30min, 60min and 120 minute durations!
  • Ideal controller for any high kW electrical equipment
  • Can be mounted directly to any standard 35mm deep flush mounting single gang wiring
  • Suitable for mounting directly on to any surface mounted single gang depth of 28mm
  • NOT suitable for mounting on an unearthed metal surface
Operating Temperature 0°C to 35ºC
Purpose of control Electronic Timer (Idependently mounted)
Power Supply 230V AC 50Hz
Classification Type 1C Action (RL1)
Contact rating 13(3)A 230V AC Suitable for loads up to 3kw
Shock Protection Class 1 (Live parts enclosed)
Dirt protection Normal situations
Enclosure protection IP 30
Limitation Intermittent
Case material Thermoplastic, flame retardant
Mounting Single gang surface moulded box (35mm minimum) 
Boost Period: Model E30  30min / 60 min / 120min
Model E30 1/2 Hour / 1 Hour / 2 Hour
Timing Accuracy +/- 5%
Height (mm) 87
Width (mm) 87
Depth (mm) 16







File-1422630148 (231.34 kB)

Our Delivery Charges and times are explained:


Delivery Charges
All deliveries have a standard charge of £7.99 + VAT up to 20kg. Where stated, certain products are delivered FREE of charge (mainland UK only*). Check the description of the desired product and if it says free delivery then you will not be charged for delivery*

Extra Charges
Where the weight is over 20kg we reserve the right to charge more dependent on product type and delivery postcode, our customer service team will be in touch and inform you of any extra charges before we despatch.

Delivery Times
All products will have a delivery time stated in their description. Next Working Day - these products will be delivered Next Working Day if ordered before 12.00, or in certain circumstances up until 4:00 pm. Please call if you require a Next Working Day and we will try our best to get it to you. Certain products will state within 48hrs, within 3 Days or within 5 days. These products will be delivered within the time stated. If you require delivery on a certain day please put this in the comments and we will aim to deliver on that day.

Certain products such as radiators are delivered after 5 working days, when purchasing a radiator please put in the desired delivery date which is 5 working days after ordering. In some cases, stock permitting, we can get radiators out sooner. Please call or put in the customer comments if you need something urgently and we will try our best.

Saturday Deliveries
We can arrange for a Saturday delivery for certain products, please call 01977 663331 for more details.

Please note: Although we will do our utmost to deliver your product in the time stated we cannot be held responsible for any unforeseen delays. Please do not book a plumber, electrician, etc until you have received the goods as we will not be held responsible for their time. Please read our terms and conditions for further details.

additional charges may be applicable dependent on your location please double-check with our customer service team

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