MR Series Half-Inch Sealed Rotaries Datasheet

NKK Switches

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Datasheet

Series MR Half-Inch Diameter Process Sealed Rotaries
G16
Indicators
AccessoriesSupplement Tactiles Keylocks Pushbuttons
Illuminated PB
Slides Programmable Rockers
Touch Tilt Toggles
G
Rotaries
www.nkkswitches.com
Electrical Capacity (Resistive Load)
For MRA: 250mA @ 125V AC
For MRF or MRK: 0.4VA maximum @ 28V AC/DC maximum
(Applicable Range 0.1mA ~ 0.1A @ 20mV ~ 28V)
Note: Find additional explanation of operating range in Supplement section.
Other Ratings
Contact Resistance: 10 milliohms maximum for MRA; 50 milliohms maximum for MRF & MRK
Insulation Resistance: 100 megohms minimum @ 500V DC
Dielectric Strength: 1,000V AC minimum for 1 minute minimum for MRA
500V AC minimum for 1 minute minimum for MRF & MRK
Mechanical Life: 30,000 operations minimum
Electrical Life: 10,000 operations minimum
Range of Operating Torque: 0.02 ~ 0.07Nm for MRA; 0.005 ~ 0.02Nm for MRF & MRK
Contact Timing: Nonshorting (break-before-make)
MRA – self-cleaning, sliding contact; MRF & MRK – self-cleaning, rotary contactor disk
Indexing: 30°
Materials & Finishes
Shaft: Brass with nickel plating
Stopper Plate: Steel with zinc plating for MRA & MRK; polyamide cover with stopper for MRF
Bushing/Housing: Zinc alloy with zinc plating
Movable Contacts: Copper with silver plating for MRA; phosphor bronze with gold plating for MRF & MRK
End Contacts & Terminals: Brass with silver plating for MRA; phosphor bronze with gold plating for MRF & MRK
Common Contacts & Terminals: Brass with silver plating for MRA; phosphor bronze with gold plating for MRF & MRK
Base: Diallyl phthalate for MRA; fiberglass reinforced polyamide for MRF & MRK
Environmental Data
Operating Temperature Range: –10°C through +70°C (+14°F through +158°F)
Humidity: 90 ~ 95% humidity for 96 hours @ 40°C (104°F)
Vibration: 10 ~ 55Hz with peak-to-peak amplitude of 1.5mm traversing the frequency range & returning
in 1 minute; 3 right angled directions for 2 hours
Shock: 50G (490m/s2) acceleration (tested in 3 right angled directions, with 3 shocks in each direction)
Sealing: MRK model meets IP67 of IEC60529 standards
Installation
Mounting Torque: .686Nm (6.08 lbin)
Cap Installation Force: 19.6 ~ 29.4N (4.41 ~ 6.61 lbf) for MRA & MRK
Processing
Soldering Time & Temperature: Wave Soldering for MRA: See Profile A in Supplement section.
Wave Soldering for MRF & MRK: See Profile B in Supplement section.
Manual Soldering for MRA: See Profile A in Supplement section.
Manual Soldering for MRF & MRK: See Profile B in Supplement section.
Cleaning: Automated cleaning recommended. Stopper plate, as well as washers for MRA & MRK, must be in
place to maintain automated cleaning. See Cleaning specifications in Supplement section.
Standards & Certifications
MRA, MRF, & MRK models have not been tested for UL recognition or CSA certification.
These switches are designed for use in a low-voltage, low-current, logic-level circuit.
When used as intended in a logic-level circuit, the results do not produce hazardous energy.
General Specifications
Series MR
Half-Inch Diameter Process Sealed Rotaries
G17
Indicators
AccessoriesSupplement Tactiles Keylocks PushbuttonsIlluminated PBSlides Programmable Rockers
Touch Tilt Toggles
G
Rotaries
www.nkkswitches.com
Actual Size
Low profile body of MRF model accommodates space limitations
required for PCB mounting. For the MRA and MRK bushing
mount models, the range of behind panel body depths is .323”
to .669” (8.2mm to 17.0mm).
Positive detent mechanism for distinct feel and audible feedback.
Metal bushing and housing construction increases durability.
Adjustable stopper plate allows 2–12 position settings.
High contact reliability achieved by the self-cleaning
contact mechanism.
Break-before-make contact timing with sliding contacts
in MRA and rotary contactor disk in MRF and MRK
models.
Interior housing seal and molded-in PC terminals, plus shaft
rubber o-ring on MRA and MRK and polyamide cover on MRF
model, allow cleaning after automated soldering.
MRK model meets IP67 of IEC60529 specifications (similar to NEMA 4 & 13).
Distinctive Characteristics
Series MR Half-Inch Diameter Process Sealed Rotaries
G18
Indicators
AccessoriesSupplement Tactiles Keylocks Pushbuttons
Illuminated PB
Slides Programmable Rockers
Touch Tilt Toggles
G
Rotaries
www.nkkswitches.com
TYPICAL SWITCH ORDERING EXAMPLE
Knobs
APlain Black
BSmall Color Tipped
CLarge Color Tipped
206
DESCRIPTION FOR TYPICAL ORDERING EXAMPLE
MRA206-A
Colors
For Plain Knob
No
Code Black
For Color Tipped
ABlack
BWhite
CRed
EYellow
FGreen
GBlue
HGray
A
AShaft Actuated
with PC Terminals
ACTUATORS & TERMINALS
Shaft Terminal
MR
Shaft Actuated with
Plain Black Knob
DP with 2-6
Adjustable Positions
PC Terminals
F
A
Actuators & Terminals
AShaft Actuated with PC Terminals
FLow Profile Screwdriver Actuated
with PC Terminals
KLow Profile Shaft Actuated with
PC Terminals
Poles & Circuits
112 SP with 2-12 Positions
206 DP with 2-6 Positions
403 4P with 2-3 Positions
Low Profile
Screwdriver Actuated
with PC Terminals
KLow Profile
Shaft Actuated
with PC Terminals
Slotted for Terminal
Screwdriver
Shaft Terminal
(3.15) Dia
.124
(0.8)
.031
(1.0)
.039
12
11
10
9
1
12
11
10
2
(0.5)
.020
Thk = (0.25)
.010
(3.5)
.138
(0.5)
.020
Thk = (0.25)
.010
(3.5)
.138
(0.5)
.020
Thk = (0.25)
.010
(3.5)
.138
2
1C
12
11
10
M
R
-
1
2
3
4
5
6
7
8
9
10
11
12
M
R
-
K
1
1
2
2
1C
12
11
10
9
12
11
10
9
(10.0)
.394
(10.0)
.394
(3.1)
.122
(2.28)
.090
(3.1)
.122
(2.28)
.090
Series MR
Half-Inch Diameter Process Sealed Rotaries
G19
Indicators
AccessoriesSupplement Tactiles Keylocks PushbuttonsIlluminated PBSlides Programmable Rockers
Touch Tilt Toggles
G
Rotaries
www.nkkswitches.com
Pole Model Number of Positions Stopper Settings Number of Terminals Schematics
SP
MRA112
MRF112
MRK112
2–12
2–12
2–12
2, 3, 4, . . . 12
2, 3, 4, . . . 12
2, 3, 4, . . . 12
1 COM, 12 LOAD
1 COM, 12 LOAD
1 COM, 12 LOAD
DP
MRA206
MRF206
MRK206
2–6
2–6
2–6
2, 3, 4, 5, 6
2, 3, 4, 5, 6
2, 3, 4, 5, 6
2 COM, 12 LOAD
2 COM, 12 LOAD
2 COM, 12 LOAD
4P
MRA403
MRF403
MRK403
2–3
2–3
2–3
2, 3
2, 3
2, 3
4 COM, 12 LOAD
4 COM, 12 LOAD
4 COM, 12 LOAD
POLES & CIRCUITS
123456789101
112
A
12
34561234
56
A B
12
31 231231
23
A B C D
POSITION SETTING FOR MRA, MRF, & MRK MODELS
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. Contact factory for continuous rotation.
MRF Models
1. Remove the protective cover from the switch body.
2. Turn the shaft counterclockwise to the extreme left by using a screwdriver.
3. Inside the cover is a magnifying lens which would be positioned over the
number which is to be the maximum position used; when the cover is then
snapped into the switch, the projection beside the lens fits into the correct
hole for setting the stop.
2
1C
12
11
10
M
R
-
1
2
3
4
5
6
7
8
9
10
11
12
Lens
MRK & MRA Models
1. Using the actuator knob, turn the shaft
counterclockwise to the extreme left. If
the shaft is not turned counterclockwise
to the extreme left, proper setting can-
not be achieved. At this extreme posi-
tion, the white line on the knob points
to the number 1 position shown on the
side of the switch.
2. Remove the knob from the shaft and
loosen the nut far enough to allow rais-
ing the stopper plate, plus washer(s),
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 func-
tioning cannot be assured if the stopper
plate is not properly positioned.
4. Tighten the nut (beveled side up) firmly
against the stopper plate.
12
11
10
9
1
12
11
10
2
M
R
-
K
1
1
2
2
1C
12
11
10
9
12
11
10
9
Standard Mounting Hardware
Packaged Loose with Each Switch:
Hex Face Nut
Locking Ring
Lockwasher
Rubber Ring (MRK)
Factory Assembled:
Hex Nut
Stopper Plate
Metal Washer (MRA)
Rubber Washer
Series MR Half-Inch Diameter Process Sealed Rotaries
G20
Indicators
AccessoriesSupplement Tactiles Keylocks Pushbuttons
Illuminated PB
Slides Programmable Rockers
Touch Tilt Toggles
G
Rotaries
www.nkkswitches.com
TYPICAL SWITCH DIMENSIONS
Single Pole
MRA112
MRA • PC Terminals 1 Pole 2 Pole 4 Pole
MRF • PC Terminals 1 Pole 2 Pole 4 Pole
MRA112
MRK112 MRK devices are designed to be panel mounted. Installation without panel mounting will affect reliability.
MRK • PC Terminals 1 Pole 2 Pole 4 Pole
MRF403
FOOTPRINTS
Double Pole
MRA206
Four Pole
MRA403
Single Pole
MRF112
MRK112
Double Pole
MRF206
MRK206
Four Pole
MRF403
MRK403
(10.0)
.394
(10.0)
.394
(17.0)
.669
M6 P0.75
(5.0)
.197
(1.0)
.039
(2.28)
.090
(6.0)
.236
(0.8) Dia Typ
.031
A
1
2
3
4
5
6
7
8
9
1
0
1
1
1
2
3
0
°
T
y
p
(9.5) Dia
.374
(3.0) Dia
.118
AA
1
2
3
4
5
6
1
2
3
4
5
6
3
0
°
T
y
p
(9.5) Dia
.374
(3.0) Dia
.118
B
AA
1
2
3
1
2
3
1
2
3
1
2
3
3
0
°
T
y
p
(9.5) Dia
.374
(3.0) Dia
.118
B
D
C
(4.2)
.165
(8.2)
.323
(3.5)
.138
(0.5) Typ
.020
(12.0) Dia
.472
(0.25) Typ
.010
Cover
B
3
2
1
C
3
2
1
A
3
2
1
D
3
2
1
(12.6) Dia
.496
1
5
°
T
y
p
1
5
°
3
0
°
1
2
3
4
5
6
7
8
9
1
0
1
1
1
2
(14.0) Dia
.551
(0.8)
.031
B
6
5
4
3
2
1
A
6
5
4
3
2
1
(12.6) Dia
.496
1
5
°
T
y
p
1
5
°
3
0
°
(12.6) Dia
.496
7
6
5
4
3
2
1
A
1
2
1
1
1
0
9
8
1
5
°
T
y
p
1
5
°
3
0
°
(12.6) Dia
.496
7
6
5
4
3
2
1
A
1
2
1
1
1
0
9
8
1
5
°
T
y
p
1
5
°
3
0
°
(12.6) Dia
.496
6
5
4
3
2
1
A
6
5
4
3
2
1
B
1
5
°
3
0
°
1
5
°
T
y
p
1
5
°
T
y
p
(12.6) Dia
.496
3
2
1
C
3
2
1
A
3
2
1
D
3
2
1
B
1
5
°
T
y
p
(9.5) Dia
.374
(3.0) Typ
.118
(1.0) Dia Typ
.039
A
1
2
3
1
2
312
3
1
2
3
B
D
C
9
0
°
3
0
°
T
y
p
(9.5) Dia
.374
(3.0) Typ
.118
(1.0) Dia Typ
.039
A
1
2
3
4
5
612
3
4
5
6
B
3
0
°
T
y
p
1
8
0
°
(9.5) Dia
.374
(3.0) Typ
.118
(1.0) Dia Typ
.039
A
1
2
3
4
5
678
9
10
11
12
3
0
°
T
y
p
A
1
2
3
C
1
2
3
B123
D
1
2
3
(12.0) Dia
.472
(0.8) Dia Typ
.031
1
5
°
T
y
p
1
5
°
T
y
p
(0.8) Dia Typ
.031
(12.0) Dia
.472
A
1
2
3
4
5
6
B23
4
5
6
1
1
5
°
T
y
p
3
0
°
T
y
p
(0.8) Dia Typ
.031
(12.0) Dia
.472
A
1
2
3
4
5
6
78
9
10
11
12
3
0
°
T
y
p
1
5
°
T
y
p
(10.0)
.394
(10.1)
.398
M6 P0.75
(2.28)
.090
(5.5)
.217
(3.5)
.138
(0.5) Typ
.020
(12.0) Dia
.472
(0.25) Typ
.010
Keyway
(3.1)
.122
Keyway
(3.1)
.122
(16.0) Dia
.630
Series MR
Half-Inch Diameter Process Sealed Rotaries
G21
Indicators
AccessoriesSupplement Tactiles Keylocks PushbuttonsIlluminated PBSlides Programmable Rockers
Touch Tilt Toggles
G
Rotaries
www.nkkswitches.com
KNOBS
AAT433
Plain Black
Color Codes: Black White Red Yellow Green Blue
A B C E F G Gray
H
(11.0) Dia
.433
(19.0) Dia
.748
(9.5)
.374
(13.0)
.512
(0.5)
.020
(16.0) Dia
.630
(9.5) Dia
.374
(14.3)
.563
(9.5)
.374
(0.5)
.020
(11.0) Dia
.433
(18.0) Dia
.709
(9.5)
.374
(15.8)
.622
(0.5)
.020
Base Material:
Polyester
Base Color:
Black
Polyamide Tip
Colors:
A, B, C, E, F, G, H
Material:
Polyacetal
Color:
Black
only
Base Material:
Polyester
Base Color:
Black
Polyamide Tip
Colors:
A, B, C, E, F, G, H
BAT4103 Small
Color Tipped CAT4104 Large
Color Tipped
PANEL CUTOUTS & MAXIMUM EFFECTIVE PANEL THICKNESS
Without
Keyway
STANDARD MOUNTING HARDWARE
AT513M
Metric Hexagon Nut
Material:
Brass, nickel plating
1 for MRA; 1 for MRK
AT545
Locking Ring
Material:
Steel, chromate over zinc plating
1 for MRA; 1 for MRK
AT509
Lockwasher
Material:
Steel, chromate over zinc plating
1 for MRA; 1 for MRK
AT535
Rubber Ring
Material:
Nitrile butadiene rubber
1 for MRK
(9.0)
.354
(1.5)
.059
(0.5)
.020
(6.4) Dia
.252
(10.2) Dia
.402
Nonsealed Panel Sealed Panel
With Standard Hardware on Nonsealed Panel:
MRA .067” (1.7mm) MRK .087” (2.2mm)
Without Locking Ring on Nonsealed Panel:
MRA .098” (2.5mm) MRK .118” (3.0mm)
With AT513M & AT535 only on Sealed Panel:
MRK .106” (2.7mm)
With
Keyway
(6.35) Dia
.250
(5.6)
.220
(0.6)
.024
(6.2) Dia
.244
(5.4)
.213
(6.35) Dia
.250
(6.5)
.256
(2.2) Dia
.087
OPTIONAL SUPPORT BRACKET
AT543
Support Bracket for MRK
Material:
Steel with tin plating
A support bracket
is needed when
the MRK is mounted
only to a PC board
and does not have
the bushing through
a panel.
(18.0)
.709
(18.0)
.709
(14.9)
.587
(0.8) Typ
.031
(3.8)
Typ
.150
(0.5) Ty
p
.020
(14.0)
.551
(8.0)
.315
M6 P0.75
(1.3)
.051
(6.2) Dia
.244
(9.4) Dia
.370
(17.5)
.689
(17.2)
.677
(1.2) Dia Ty
p
.047
MRA & MRK MRK
(1.7)
.067
(0.8)
.031
(2.0)
.079
(5.5)
.217 (6.0)
.236
(11.6)
.457
(12.0)
.472

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