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Grasslin GM40AVE Series Installation & Operating Manual page 3

General purpose electronic commercial time switches

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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.
GM40AVE SERIES TERMINAL DESIGNATIONS
T
TIMER
L 1
L 2/N
NC
GM40AVE SERIES TYPICAL WIRING DIAGRAMS
120 VAC One Load
T
TIMER
L 1
L 2/N
NC
J1
L
N
120VAC
When the GM40AVE 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 GM40AVE 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 GM40AVE 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 GM40AVE 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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