BLACK
GREEN
RED
COLOR KEY
Bk
Gn
Rd
YELLOW
3
L2
5
L3
13
NO
2
T1
4
T2
6
T3
14
NO
TEST
TRIP IND.
97 NO
98 NO
95 NC
96 NC
2
T1
4
T2
6
T3
O R
54
NO
NO
53
ON
OFF RESET
2 HP 110V Motor
110 Volt
Single-Phase
Power Source
M
A
1
L1
TECO
CU-
16
Ground
Contactor TECO
CU-16 (110V Coil)
Thermal Overload
Relay TECO RHN-10K
(22–30A)
IMPORTANT: This magnetic switch toggles a motor ON and OFF, and helps provide thermal overload pro-
tection for the motor if the operating temperature gradually increases due to heavy work loads. The thermal
overload relay inside is not designed to cut power in the event of a sudden motor overload or stall. To help
protect a motor from this type of overload, the power supply circuit must be properly sized for the full-load
current rating of the motor.
OPERATION: When pushed, the green ON button on the outside cover of the magnetic switch allows cur-
rent to flow to the magnetic coil, which pulls the contactor closed. The main current then passes through
the thermal overload relay to the motor. If the motor begins to overheat, the relay breaks the magnetic field,
which opens the contactor and cuts current to the motor. The red OFF button manually breaks the magnetic
field, which opens the contactor and disconnects the current to the motor.
Figure 1. Model G8291 magnetic
switch.
Electrocution or
fire could occur if
this switch is not
installed or adjust-
ed by a qualified
electrician!
MODEL G8291
2 HP 110V MAGNETIC
SWITCH
INSTRUCTIONS
