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Install Manual

The EH Series Electronic Time Switches provide control for electric water heaters with to-the-minute accuracy in programming and time-keeping. The use of a water heater timer allows the customer to shift electricity use to "off-peak" time periods to reduce utility costs. These time switches can be programmed for repeat daily scheduling, 5-day work week scheduling, weekend scheduling or individual day scheduling. Models are available for both 120 and 240 VAC applications.


  • 42 ON/OFF events per week
  • 7-day scheduling
  • To-the-minute programming and time-keeping accuracy
  • External override switch
  • LED load indicator
  • Replaceable battery backup


  • Agriculture Feeders
  • Greenhouse Misting Control
  • Water Heater Control


  • Backup Type: Battery
  • Switch Type: SPST
  • Mechanism Type: Digital/Electrical
  • Backup Protection Time: 3 years
  • Category: Specialty Time Switches Web
  • Rating: General Purpose
  • Timer Type: Digital
  • Maximum ON/OFF Operations: 42
  • Enclosure Type: Indoor type 1 metal
  • Warranty Period: 1-Year limited
  • Battery Service Type: Replaceable
  • Has Override Switch: Yes
  • Switch Rating For EH10: 30 A Inductive, 30 A Resistive, 5 A Tungsten, 1 HP, 120 VAC, 60 Hz
  • Watts: 3600

    Backup Type
    Battery Color Gray
    MaximumOnOffOperations 42
    Number Of Circuits 1
    Switch Type SPST
    Enclosure Type Indoor type 1 metal
    Maximum ON/OFF Times 1min
    OnOffOperations 42
    Backup Protection Time 3 years
    Warranty Period 1-Year limited
    Battery Service Type Replaceable
    Battery Type AA
    Body Material Metal
    Please see the Warning @
    Country Of Origin China
    General Purpose (NC) 30 A
    General Purpose (NC) Range(s) 30 A
    Inductive (NO) 30 A
    Inductive Load Ratings NC Ranges 30 A
    Knockout Dimensions Back (1) combination 1/2" - 3/4"
    Knockout Dimensions Bottom (2) combination 1/2" - 3/4"
    Material Metal
    Motor Load Ratings NC Ranges 30 A
    Resistive (NC) Range(s) 30 A
    RoHS Certification No
    Wire Size Min #10 AWG
    Operating Temperature Max (°C) 40
    Operating Temperature Max (°F) 104
    Operating Temperature Min (°C) -40
    Operating Temperature Min (°F) -40

    Product Depth (in) 3
    Product Depth (mm) 76.2
    Product Height (in) 7.5
    Product Height (mm) 190.5
    Product Width (in) 5.08
    Product Width (mm) 129.032

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