Intermatic - WH40 - Mechanical Water Heater Time Switch

IntermaticSKU: WH40

Sale price $81.74
Sold out


Install Manual

With the easy-to-set "Yellow Dial," these time switches allow for basic control of electric water heaters. These time switches offer a minimum ON/OFF time of one hour, and are available for 208-250 VAC applications. With the proven reliability of our mechanical line, these time switches provide dependable electric water heater control.


  • Two sets of ON/OFF trippers
  • Enables shifting electricity use into off-peak hours to reduce energy costs
  • Convenient external override switch
  • Up to 12 ON/12 OFF events


  • Agriculture Feeders
  • Greenhouse Misting Control
  • Water Heater Control


Color Gray Input Voltage Range(s) 208-277 VAC, 60 Hz
Maximum ON/OFF Operations 12 Mechanism Type Analog/Mechanical
Operation Mode 24 hour Switch Type DPST
Enclosure Type Indoor type 1 metal Minimum ON/OFF Times 1 hour
Maximum Power Consumption (W) 3 W Wiring Option Terminals
Resistive Load Ratings Ranges 40 A Max, 208-277 VAC, 60 Hz Warranty Period 1-Year limited
Application Compatibilities Electric Water Heater Amps Per Pole 40 A
Clock Motor Voltage 208/277 VAC, 60 Hz Has Manual Override Yes
Has Override Switch Yes Knockout Dimensions Back (1) combination 1/2" - 3/4"
Knockout Dimensions Bottom (2) combination 1/2" - 3/4" Knockout Dimensions Left (1) combination 1/2" - 3/4"
Number of Trippers Included 2 ON/2 OFF Watts Resistive 10000
Wire Size Max #8 AWG Wire Size Min #14 AWG
Operating Temperature Max (°C) 54 Operating Temperature Max (°F) 130
Operating Temperature Min (°C) -40 Operating Temperature Min (°F) -40
Product Depth (in) 3 7/16 Product Height (in) 7 7/8
Product Width (in) 5 1/8 Unit Carton Height (in) 8.25
Unit Carton Length (in) 5.5 Unit Carton Weight (lb) 2.794
Unit Carton Width (in) 3.5

Shipping Policy



You may also like

Recently viewed