Utilities in many
areas of the country offer two electric rates for
residential or commercial customers. One rate has the regular
daytime electrical rate, the other is the “off-peak” rate. The “offpeak”
rate provides customers with “lower-priced” electricity during
the nighttime and weekend periods. These time switches allow the
customer to shift electricity use into these “off-peak” time periods in
an attempt to save utility costs.
external override switch (WH40 only)
Water Heater Control for:
• Residential • Commercial • Industrial
• Institutional/Schools • Military Facilities
Enclosure: NEMA 1 Rated Indoor steel in gray finish.
Spring hasp, with hole for lock, holds permanently attached, side hinged door
Three mounting holes on back plus handy box mounting holes.
73 ⁄4 in. (19.7 cm) H x 5 in. (12.7 cm) W x 3 in. (7.6 cm) D
Knockouts: Combination 1 ⁄2 – 3 ⁄4 in. nominal knockouts, one on back and
each side of
enclosure and two on bottom.
Switch Rating: 10,000 W (40 amp) Max 250 volt, 60 Hz.
Clock Supply Volts AC 60 Hz: 208, 240 Watts: 10000 External Switch:
No Amps/Pole: 40