MRB12B-A NKK Switches, MRB12B-A Datasheet - Page 5

• Manufacturer Part Number: MRB12B-A
• Description: SW ROTARY SPDT STR KNOB BLACK
• Manufacturer: NKK Switches
• Series: MRBr
• Type: Miniature PCB Process Sealed Rotariesr

Specifications of MRB12B-A

• Number Of Positions: 2
• Number Of Decks: 1
• Number Of Poles Per Deck: 1
• Circuit Per Deck: SPDT
• Contact Rating @ Voltage: 0.4VA @ 28VAC/DC
• Actuator Type: Knob
• Mounting Type: Panel, PCB Through Hole
• Termination Style: PC Pin
• Orientation: Vertical
• Angle Of Throw: 90°
• Index Angle: 90 deg
• Contact Style: Non Shorting
• Contact Form: SPDT
• Color: Black
• Contact Material: Brass
• Contact Plating: Tin
• Dielectric Strength: 500 VoltsAC
• Voltage Rating: 28 VoltsAC/DC
• Current Rating: 0.4 Volt-Amp at 28 VoltsAC/DC
• Actuator: Shaft Actuated, with Knob
• Cap Color: Black
• Contact Rating: 0.4 Volt-Amp at 28 VoltsAC/DC
• Switch Function: ON - NONE - ON
• Voltage Rating Ac: 28 Volts
• Voltage Rating Dc: 28 Volts
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

G
Series MRB
G32
45° Indexing • SP3T • Right Angle PC
45° Indexing • DP3T • Right Angle PC
Material:
Polyacetal
Color:
Black
Color Codes:
Shaft Detail
With Standard
Hardware
.087” (2.2mm)
MRB14H
MRB24H
A
.122
(3.1) Dia
AT433
Plain Black
(0.5)
.020
(13.0)
.512
(2.28)
.090
(10.0)
.039
.394
(1.0)
(2.28)
(2.28)
.090
A
.090
Keyway
Keyway
(6.35) Dia
.250
.122
.122
PANEL CUTOUTS & MAXIMUM EFFECTIVE PANEL THICKNESS
(3.1) Dia
(3.1) Dia
(19.0) Dia
(11.0) Dia
.433
.748
(2.2) Dia
.087
Black
Mounting Precaution
for Cap Clearance on
Right Angle Models
When mounting a right
angle switch, a cap clear-
rance of .035” (0.9mm)
is recommended.
(15.24)
(15.24)
.600
.600
(9.5)
.374
.256
(6.5)
B
Polyester Base:
Black
Polyamide Tip
Colors:
A, B, C, E, F, G, H
(0.5) Typ
.020
45°
(0.5) Typ
.020
45°
POS 1
45°
POS 1
45°
POS 3
POS 3
White
B
TYPICAL SWITCH DIMENSIONS
POS 2
POS 2
Without
Locking Ring
.118” (3.0mm)
AT4103 Small
Color Tipped
Double Flat with
M6 P0.75
Double Flat with
M6 P0.75
(10.0)
.394
(10.0)
.394
www.nkk.com
C
(0.7) Typ
.028
Interruption
by end of PCB
(7.0)
.276
Actuator shown in Position 1
Actuator shown in Position 1
Red
(0.7) Typ
.028
(9.4)
.370
(7.0)
.276
(9.4)
.370
KNOBS
.020
(0.5)
(14.3)
.563
(7.62)
.300
(7.62)
.300
(6.35) Dia
.250
E
(16.0) Dia
.630
(9.5) Dia
.374
Miniature PCB Process Sealed Rotaries
.035
(0.9)
(2.54)
.100
Yellow
(2.54)
.100
(2.54)
.100
(2.54) Typ
.024
.100
(2.54) Typ
(0.6)
.100
(2.54) Typ
(9.5)
.374
.100
(2.54) Typ
.220
.100
(5.6)
F
Polyester Base:
Black
Polyamide Tip
Colors:
A, B, C, E, F, G, H
PCB
4
1
1
C
(15.74)
5
.620
(15.74)
2
.620
2
Green
3
6
3
Sealed Panel
with 1 Hex Nut &
1 Rubber O-ring
.165” (4.2mm)
C2
C1
AT4104 Large
Color Tipped
C1
(0.7) Dia Typ
.028
(5.08)
.200
(0.7) Dia Typ
.028
(5.08)
.200
Standard Hardware Supplied
AT513M Hex Nut
AT545 Locking Ring
AT509 Lockwasher
Optional Hardware
AT535 O-ring for Panel Seal
See Supplement for details
(9.0)
.354
.354
(9.0)
(16.3)
.642
(16.3)
.642
G
(3.5)
.138
(3.5)
.138
(5.08)
(5.08)
(0.5)
.020
Blue
.200
.200
(2.54) Typ
(2.54) Typ
.100
.100
(15.8)
.622
C1
C2
C1
C L
C L
3
6
3
(18.0) Dia
.709
(11.0) Dia
.433
(5.4)
.213
2
5
2
H
1
4
1
.244
(2.54) Typ
(6.2) Dia
(7.62)
.039
(2.54) Typ
(7.62)
.039
.100
.300
(1.0) Dia Typ
.100
(1.0) Dia Typ
.300
Gray
(2.54)
(2.54)
.100
.100
.374
(9.5)