Reed Relays and
Electronics India Limited
Manufacturer of Reed Switches, Reed Sensors and Reed-based products
Reed Relays and Electronics India Limited Incorporated in 1971

Reed switches in Instant Water heaters and Power showers

Reed switches in instant water heater

Bathrooms appliances such as Instant Water Heaters and power showers use reed switch based Flow switches to detect if the water supply has been turned on. As soon as the shower is turned on, the flow switch detects this and this signal is used to activate a relay that controls the high power instant heater.

Some models also use this signal to turn on a pressure pump to increase the water flow rate. In addition to switching on the heaters, thermal reed switches are used cut in and cut out the multiple heaters that heat the water as it is pumped through. This is to ensure that the heat of the water is matched to the flow rate set, as a higher flow rate would require more heaters to be turned on.

When the shower is turned off, the flow switch will senses this and turns the heaters and the pressure pump off. Such instant heater power showers conserve as much as 40% more energy than conventional tank based heaters or geysers.

Recommended Products

The Reed Switches and Reed Sensors used in such applications need to be robust, durable and efficient in meeting a high life expectancy. Our engineers work hard in life testing our products under various conditions, and we want to ensure that the the end product has a long working life. Although we wouldn’t want to restrict our products for use in only certain applications, the recommended products for use in Instant Water Heaters and Power Showers are listed below.

TRS-W Thermal Reed Sensor

Thermal Reed Sensor All dimensions in mm Highlights ♦ Switching range available from 25°C to 130°C with...Continue reading ->

LV-1925 Reed Switch for Line Voltage switching

Reed Switch for Line voltage switching Features Contact Rating Configurable. Ruthenium contact. 20.0 mm Glass length. Normally Open. Inert gas...Continue reading ->

HB-2232 Reed Switch with High Breakdown

Reed Switch with high breakdown voltage Features Breakdown Voltage Configurable. Ruthenium contact. 22.0 mm Glass length. Normally Open. Inert gas...Continue reading ->