Brochure

Mechanical Time Switches
Mechanical Time Switches
33
24-Hour Heavy-Duty
Model # Switch Input Voltage Skipper Wheel
Metal Indoor Enclosure
T1905HD
SPDT 125 VAC, 60 Hz No
T1975EHD
SPDT 480 VAC, 60 Hz Yes
Metal Outdoor Enclosure
T1905HDR
SPDT 125 VAC, 60 Hz No
T1975HDR
SPDT 125 VAC, 60 Hz Yes
T1975EHDR
SPDT 480 VAC, 60 Hz Yes
Mechanism Only
T1905HDM
SPDT 125 VAC, 60 Hz No
T1975HDM
SPDT 125 VAC, 60 Hz Yes
T1975EHDM
SPDT 480 VAC, 60 Hz Yes
T1905HD and T1975HD
24-Hour Heavy-Duty
These heavy-duty time switches are designed to handle the
toughest environments, and have fully encapsulated motors to
prevent dust or debris from entering the motor. The ON/OFF
trippers are permanently attached to the metal dial to avoid the
accidental loss of a tripper. These time switches offer 15-minute
intervals, providing up to 96 operations each day.
Applications
• Oil well pumps • Silo unloaders • Process equipment
• Other electrical loads that may be in harsh environments
Features
• Heavy-duty metal dial and metal enclosure withstands the most
punishing environmental conditions
• Models with skipper wheel allow for operations to be
omitted on selected day(s) of the week
• Easy-to-set trippers rotate in/out for fast, accurate setting
• Up to 96 operations (48 ON/48 OFF) every 24 hours
• 15-minute intervals between events
• Fully encapsulated motor with protected gears
T1975EHD
Ratings
Resistive 20 A, 125-480 VAC
Motor ½ HP, 120 VAC
1 HP, 240 VAC
Max Power Consumption 3 W
Operating Temperature -40º F to 130º F (-40º C to 54º C)
Enclosure Dimensions H x W x D
Metal Indoor 7
7
⁄8" x 5
1
⁄8" x 3
7
⁄16" (200 mm x 130.2 mm x 87.3 mm)
Metal Outdoor 10
1
⁄8" x 6 ½" x 3
5
⁄8" (257.2 mm x 165.1 mm x 92.1 mm)
Knockout Dimensions
Side/Back (1) ½" and ¾" combination
Bottom (2) ½" and ¾" combination
Wire Size #12 - #14 AWG
Warranty 1-year
For enclosure options and dimensions, see pages 164-165