Grizzly G4573 Instructions

Figure 1. Model G4573 magnetic
switch.
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.
3 HP 220V MAGNETIC
Electrocution or
fire could occur if
this switch is not
installed or adjust-
ed by a qualified
electrician!
Contactor TECO
CU-16 (220V Coil)
COLOR KEY
BLACK
Bk
GREEN
Gn
RED
Rd
YELLOW
Thermal Overload
Relay TECO RHN-10K
(17–24A)
MODEL G4573
SWITCH
INSTRUCTIONS
220 Volt
Single-Phase
Power Source
1 3 5 13
L1 L2 L3
TECO
CU-
16
2 4 14
6
T1 T2 T3
TRIP IND.
O R
TEST
OFF
97 NO 98 NO 95 NC
2 6
4
T1 T2 T3
3 HP 220V Motor
NO
NO
53
Ground
ON
54
NO
NO
M
A
RESET
96 NC