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Time Guard Immersion Heater Controller 24 Hour

£26.40 £22.00
In stock
Delivery Time:
Next Working Day
3 Years
Quick Code:
Order Line:
01977 663331
  • Replaces existing immersion heater on / off switches
  • This segmented time guard fits on a single gang wall box
  • Permanent ON/OFF control
  • Timer Mode: 24 Hour
  • Minimum depth of wall box: 32mm


Time Guard Immersion Heater Controller 24 Hour

This time switch is a compact and easy to use segment timer, which fits on a single gang wall box. It can control outputs of up to 16A which makes it suitable for domestic immersion heaters. This time guard has 96 quick-set segments for up to 48 ON/48 OFF programmes. This enables the heater under control to be turned off when alternative methods of heating are available, or during a holiday period. Shortest switching time of 15 minutes increasing in 15 minute steps. It also enables the heater to be permanently turned ON. The NTT01 has Red LED ‘Mains ON’ and green LED ‘Output’ indicators for easy viewing. Switches ON and OFF at preset times. Easy to use captive segment dial. Fits a standard flush or surface mount box with a minimum 32mm deep box. Simply replaces existing immersion heater On / Off switches, ensuring you have more control of your hot water!


Special ‘Traffic Light’ slider switches for easy ON (green), Auto (green & red) and OFF (red) mode indication!


  • Replaces existing immersion heater on / off switches, giving you more controllability!
  • 16A load rating
  • Permanent ON/OFF control
  • Timer Mode: 24 Hour
  • Setting Type Segment
  • Operating Voltage 230V AC
  • Switch Rating 230V AC 16A Resistive (3.68kW), Inductive 4A
  • Operating Temperature -10 to 50ºC
  • Up to 48 programmes per day
  • Operating temperature: 0°C to 40°C
  • Cable Connection 1.5 – 2.5mm 2 Flexible Cable
  • Minimum depth of wall box: 32mm
  • Conforms to Directives 73/23/EEC, 89/336/EEC
  • Please Note: Product not suitable for discharge lighting

Timer Mode 24 Hour
Setting Type Segment
Operating Temperature 0°C to +40ºC
Cable Connection 1.5 – 2.5mm² Flexible Cable
EC Directives Conforms to Latest Directives
Switch Rating 16A Resistive (3.68kW), Inductive 4A
Operating Voltage 230V AC
Height (mm) 80
Width (mm) 75
Depth (mm) 62







4ft Series 2000 Led Batten 44W

File-1427278339 (401.58 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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