Immersion Heater Timer Switch
- Pre-Settable Timer for Automatic Light On-Off Control
- User Friendly & Intuitive User Interface Design
- Works over wide input Voltage range of 120V to 320V AC/ 50Hz
- Support weekly, cycle and pulse programs, automatic summer and winter time changeover, automatic correct the time error, etc
- Letop time switches can be installed on a DIN rail (overall width of 1 to 6 modules)
- Analogue time switches with daily 10, 15, 30 minute programs.
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Letop Immersion Heater Timer Switch
Immersion heater timer switches give you greater and easier control over your heating, which means you can pre-set the heating to come at a specific time. Immersion heater timers are not only easy to use and provide extra convenience, but they also keep your energy costs under control.
Letop offers a variety of time switches to turn the immersion on and off at specific times or intervals as needed. It works in any setting – industrial, residential or commercial. By installing a time switch, your home or business will become more energy efficient.
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Featured Immersion Heater Timer Switch
How the time switch works to control the Immersion Heater
Immersion heater timer switches are programmable devices that control when a water heater is turned off and on. With this device, your water heater will provide hot water only when it’s scheduled to do so instead of maintaining hot water throughout the day. Program the timer to only heat water during peak off-times.
Besides, a time switch for an immersion heater works just like a thermostat. This means that when the water reaches the desired temperature, the immersion tank will automatically turn off, so you aren’t wasting money.

















Immersion Heater Timer Switch FAQ
It has been found that water heater timers can save up to 25% of the annual cost of water heating. On average, this translates to savings of $30 per year for a family in California. Water heater timers can be an economical, easy-to-use way to save money on water heating costs quickly.
- Remove the timer from the casing. Remove the timer from the casing. This item only applies to electric water heaters.
- Remove the mains power cable. Remove the power cord.
- Connect new wires. Connect new wires.
- Tighten the screws to secure the wires to the timer. Complete the project.
The lower immersion is the Economy 7 (Night), which should turn on or start under the control of the clock. Another further boost is boost & use only if you run out of water during the day and need a recharge. Hope that helps.
The main cable of the immersion heater is a two-core grounded 2.5mm cable. This cable should be connected to a 20 amp double pole isolator switch (with neon indicator light) from which it should be connected to a heat resistant 16 amp cable or flexible connector.
It’s just simple power on and off, unscrew the current switch from the wall, disconnect the wires, connect the timer switch, connect it to the wall, turn on the power, and we’re off. Basically yes. As long as your current immersion heater is 3KW or less then the Maplin switch will do.
Newer digital time switches are quite similar to modern dimmer switches in the way they are wired. They generally fit into standard wall switch boxes, and most have wire leads that connect directly to circuit wires with wire connectors.
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