Intermatic TimeMaster GM40 Operating instructinos
INSTALLATION
1. Open door and then remove interior protective cover by releasing spring clip on bottom.
2. Remove timer mechanism by releasing spring clip on bottom.
3. Select knockouts to be used. Remove inner 1/2” knockout by inserting a screwdriver in
the slot and carefully punch knockout loose. Remove slug. If 3/4” knockout is required,
remove the outer ring with pliers after removing the 1/2” knockout. Smooth edges with
knife if necessary.
4. Place enclosure in desired mounting location and mark the three mounting holes (refer to
diagram). Start by placing set screw on top and attaching enclosure over keyhole; then
screw in remaining two screws on bottom.
5. Connect conduit hubs to conduit before connecting the hubs to the enclosure. After
inserting hubs into enclosure, carefully tighten hub lock nut. Do not over-torque.
6. Verify input voltage selection. Refer to DIP switch diagram for desired input voltage.
7. Wire in accordance with National and Local Codes (see wiring diagrams).
8. Grounding: Terminate all ground wires to ground lug on bottom of enclosure.
9. Replace interior protective cover.
Note: For outdoor locations, raintight or wet location conduit hubs that comply with require-
ments of UL 514B (standard for fittings for conduit and outlet boxes) must be used.
6-1/8”
2-1/2”
File #E83486
Covered by U.S. Patent #6,563,2371.
Interior
Protective
Cover
Step 1
Diagram not to scale.
All dimensions in inches.
Ground Lug
Step 2
Timer Mechanism
GM40 General Purpose
Multi-Voltage Commercial
Time Switch
ELECTRICAL RATINGS:
N.O. Contacts:
40A Resistive @ 120~277VAC
1HP, 16FLA, 90LRA @ 120VAC
2HP, 12FLA, 52LRA @ 208~277VAC
30A Ballast @ 120VAC
20A Ballast @ 277VAC
15A Tungsten @ 120VAC
300VA Pilot Duty 120~240VAC
N.C. Contacts:
30A Resistive @ 120~277VAC
1HP, 12FLA, 30LRA @ 120VAC
2HP, 10FLA, 30LRA @ 240VAC
2A Tungsten @ 120VAC
10A Ballast @ 277VAC
WIRING CONNECTIONS:
Screw box lug terminals
ENVIRONMENTAL RATINGS:
Operating Temperature Range:
–40°F to 131°F (–40°C to 55°C)
Operating Humidity: 0 to 95% non-condensing
ENCLOSURE DIMENSIONS:
8.795” x 6.631” x 2.935” (H x W x D)
SHIPPING WEIGHT: 2 lbs.
4
3
2
1
ON
ON
ON
ON
120VAC
4
3
2
1
OFF
OFF
OFF
OFF
277VAC (Default)
4
3
2
1
OFF
ON
OFF
ON
208~240VAC
NOTE: Unit is shipped with DIP Switches set for 277VAC Input Voltage.
CAUTION: Do not check circuits by “sparking” wires to terminals. Damage to
the timer may result.
INPUT VOLTAGE DIP SWITCH SETTING:
1. Do not apply power to the GM40 prior to setting correct Input Voltage DIP switch.
2. Determine the input voltage which will be applied to the GM40 (i.e. L1 and L2/N terminals,
see wiring diagrams).
3. Set the DIP Switch according to the diagram below.
NEMA 3R Enclosure
Bracket
Mount with
Dimensions