Timeguard 24hr Compact Immersion Time Switch - NTT01 has a rating of 4.9 stars based on 9 reviews.
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Timeguard 24hr Compact Immersion Time Switch - NTT01

Quick Find Code: NTT01

3 Year Warranty
Free Next Day Delivery on orders over £50*
  • Full 24-hour schedule — 4 ON / 4 OFF events daily
  • 16A relay supports immersion and resistive loads
  • Self-cancelling override for temporary bypass
  • Automatic summer/winter clock adjustment included
  • Retains programming for ~100 hours during power cuts

Timeguard 24hr Compact Immersion Time Switch - NTT01

Quick Find Code: NTT01

3 Year Warranty
Free Next Day Delivery on orders over £50*
  • Full 24-hour schedule — 4 ON / 4 OFF events daily
  • 16A relay supports immersion and resistive loads
  • Self-cancelling override for temporary bypass
  • Automatic summer/winter clock adjustment included
  • Retains programming for ~100 hours during power cuts

£26.93
£17.95 (inc. VAT)

You save: £8.98

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Product Overview

Timeguard 24hr Compact Immersion Time Switch - NTT01

The Timeguard NTT01 is a compact and efficient 24-hour electronic immersion heater timeswitch ideal for regulating hot water systems on a daily schedule. Operating on a 230 V AC / 50 Hz supply, it allows users to set up to 4 ON / 4 OFF switching periods per 24-hour cycle, giving flexibility to match hot water usage throughout the day. Its design supports both daily repeat mode and manual override, making it perfect for daily household routines or variable heating needs.

Designed for accessibility and ease of use, the NTT01 features a clear backlit display and intuitive button layout for programming. A self-cancelling override allows the heater to be temporarily bypassed and return to the programmed time at the next interval. The unit is built for both flush and surface mounting and fits within a standard wall box (with a minimum depth of approx. 32 mm). Its compact dimensions make it unobtrusive yet effective in a variety of installation locations.

With an internal relay rated at 16A (resistive loads), the NTT01 is capable of controlling immersion heaters, as well as other resistive appliances. It includes automatic summer/winter time adjustment, which ensures the times remain accurate as the clocks change, and a memory feature that retains programming for up to 100 hours during power interruptions. The combination of flexibility, reliability, and ease of installation makes the NTT01 a dependable choice for daily immersion control.

Downloads

Download ntt01-instructions

Specification

24 Hour Digital ClockNo
Battery BackupYes
Battery RechargeableYes
Gang1
MPNNTT01
Old GTIN05012483012291
Operating Temperature Maximum40 °C
Operating Temperature Minimum-20 °C
Shortest Switching Time15 min
Timer Mode24 Hour
Voltage230 V
Depth60 mm
Height92 mm
Width92 mm

We always aim to dispatch your order for delivery on the next working day. Simply place your order before the same-day dispatch cut-off time. The countdown timer on the product page shows this cut-off time. While we work with trusted couriers, delivery times cannot be guaranteed.

Free UK Delivery on All Qualifying Orders Over £50. Orders under £50 will incur a £5.90 Delivery Fee.

This Excludes Delivery to the Scottish Highlands, Offshore Islands and Northern Ireland. These will be charged at an extra rate, which will be calculated at the checkout.

Heavier Items may also incur an extra fee.