Datasheet

Series MR
Half-Inch Diameter Rotary Switches
Each switch is supplied with the stopper set for the
maximum number of positions allowed for that model.
Prior to installation, the desired position setting should
be made.
1. Using the actuator knob, turn the shaft counterclock-
wise to the extreme left. If the shaft is not turned to
this extreme position where the white line on the
knob points to the number 1 position shown on the
side of the switch, proper setting cannot be
achieved.
2. Remove the knob from the shaft and loosen the nut
far enough to allow raising the stopper plate for
resetting to the desired position.
3. Note the position numbers on the side of the switch;
these correspond to the terminal numbers and
stopper holes. Insert the stopper in the hole
numbered for the maximum desired number of stop
settings. Satisfactory switch functioning cannot be
assured if the stopper plate is not properly posi-
tioned.
4. Tighten the nut (beveled side up) firmly against the
stopper plate.
Pole Model Number of Positions Stopper Settings Number of Terminals Schematics
MRX108 2-8 2, 3, 4, 5, 6, 7, 8 1 COM, 8 LOAD
SP
MRY106 2-6 2, 3, 4, 5, 6 1 COM, 6 LOAD
DP MRX204 2-4 2, 3, 4 2 COM, 8 LOAD
MRT22 2 ON-NONE-ON
DPDT
MRT23 3 ON-OFF-ON
4P MRX402 2 1 & 2 4 COM, 8 LOAD
12345678
A
123456
A
12341234
A B
134 6
2 5
(COM)
12121212
A B
C D
POLES & CIRCUITS
POSITION SETTING FOR MRX & MRY MODELS
2–3 2–1
5–6 5–4
2–3 OPEN 2–1
5–6 OPEN 5–4
1
2
1
8
1
6
Standard Mounting Hardware
Packaged Loose with Each Switch:
Hex Face Nut
Locking Ring
Lockwasher
Factory Assembled:
Hex Nut
Stopper Plate
MRX MRY
10-10-00
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