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WARNING
This Time Switch is designed to control one or two single phase loads. Do Not use to directly control
three phase loads. Consult a qualified electrician if you are required to control three phase equipment.
GM40AV SERIES TERMINAL DESIGNATIONS
T
TIMER
L 1
L 2/N
NC
GM40AV SERIES TYPICAL WIRING DIAGRAMS
120 VAC One Load
T
TIMER
L 1
L 2/N
NC
J1
L
N
120VAC
When the GM40AV is used to control a single phase 120 VAC
load, connect a jumper wire (J1) between L1 and COM.
240 VAC One Load
T
TIMER
L 1
L 2/N
NC
J1
J2
L1
L2
240VAC
When the GM40AV is used to control a single phase 240 VAC
load, connect a jumper wire (J1) between L1 and COM and
connect a second jumper wire (J2) between L2 and COM2.
NO
COM
NC 2
NO
COM
NC 2
NO 2
LOAD
NO
COM
NC 2
NO 2
LOAD
#1
NOTICE
•
The circuit conductors shall have an ampacity not
less than the maximum total load to be controlled.
•
For all connections, use min. 8 AWG wire for 40 A
loads or 10 AWG for 30 A loads, min. 90 o C (194
o F) rating.
•
Over current protection shall have an interrupting
rating sufficient for the application control circuit
NO 2
COM2
voltage and the total load current of the equipment
being controlled.
•
A fuse or circuit breaker shall be connected in
series with each ungrounded conductor (and shall
be able to simultaneously open each conductor).
•
Jumper wires are not included.
120 VAC Two Loads
T
TIMER
COM2
L 1
L 2/N
L
N
120VAC
When the GM40AV is used to control two single phase 120
VAC loads, connect a jumper wire (J1) between L1 and COM
and connect a second jumper wire (J2) between COM and
COM2.
NOTICE! Make sure that the combined amperage of Load 1
and Load 2 do not exceed the limits of the feed circuit.
277 VAC Two Loads
T
TIMER
COM2
L 1
L 2/N
L
N
277VAC
When the GM40AV is used to control two single phase 277
VAC loads, connect a jumper wire (J1) between L1 and COM
and connect a second jumper wire (J2) between COM and
COM2.
NOTICE! Make sure that the combined amperage of Load 1
and Load 2 does not exceed the limits of the feed circuit.
NC
NO
COM
NC 2
LOAD
J1
#1
NC
NO
COM
NC 2
LOAD
J1
#1
NO 2
COM2
LOAD
J2
#2
NO 2
COM2
LOAD
J2
#2
3
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