Datasheet

ManualsBrandsNKK ManualsRotary SwitchesRotary Switch, 2 Poles, 12 Positions, 45°, Panel Mount

Series MR

Half-Inch Diameter Process Sealed Rotaries

G15

Indicators

AccessoriesSupplement Tactiles Keylocks PushbuttonsIlluminated PBSlides Programmable Rockers

Touch

Tilt

Toggles

Rotaries

www.nkk.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: 24.5 ~ 73.5mNm for MRA; 4.90 ~ 24.5mNm 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

Mount: Zinc alloy with zinc plating

Movable Contacts: Phospher Bronze 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

Case: 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/s

) 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 lb•in)

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

Summary of content (11 pages)

PAGE 1
Toggles Series MR Rockers General Specifications Electrical Capacity (Resistive Load) Environmental Data Operating Temperature Range: Humidity: Vibration: Shock: Sealing: Installation Mounting Torque: Cap Installation Force: Processing Soldering Time & Temperature: Cleaning: Standards & Certifications Pushbuttons Programmable Illuminated PB .686Nm (6.08 l b • in) 19.6 ~ 29.4N (4.41 ~ 6.61 lbf) for MRA & MRK Wave Soldering for MRA: See Profile A in Supplement section.
PAGE 2
Toggles Series MR Rockers Distinctive Characteristics Programmable Illuminated PB Pushbuttons 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. Rotaries Keylocks Adjustable stopper plate allows 2–12 position settings.
PAGE 3
Series MR Toggles Half-Inch Diameter Process Sealed Rotaries TYPICAL SWITCH ORDERING EXAMPLE Knobs Pushbuttons Poles & Circuits Actuators & Terminals Rockers A Colors A Shaft Actuated with PC Terminals 112 SP with 2-12 Positions A Plain Black F Low Profile Screwdriver Actuated with PC Terminals 206 DP with 2-6 Positions B Small Color Tipped 4P with 2-3 Positions C Large Color Tipped K Low Profile Shaft Actuated with PC Terminals 403 For Plain Knob No Code Programmable Illuminated
PAGE 4
Series MR Toggles Half-Inch Diameter Process Sealed Rotaries POLES & CIRCUITS Rockers Pole Pushbuttons SP Programmable Illuminated PB DP 4P Model Number of Positions Stopper Settings Number of Terminals MRA112 2–12 2, 3, 4, . . . 12 1 COM, 12 LOAD MRF112 2–12 2, 3, 4, . . . 12 1 COM, 12 LOAD MRK112 2–12 2, 3, 4, . . .
PAGE 5
Series MR Toggles Half-Inch Diameter Process Sealed Rotaries TYPICAL SWITCH DIMENSIONS Pushbuttons 2 C 3 1 2 4 3 2 A 3 5 1 5 6 6 7 8 4 2 3 1 D 2 1 3 1 5 6 A B 3 4 10 11 2 1 B 3 9 12 A (3.0) Dia .118 (3.0) Dia .118 2 1 (2.28) .090 (1.0) .039 (3.1) .122 (6.0) .236 (10.0) .394 (16.0) Dia .630 (17.0) .669 (5.0) .197 p 30° Ty (9.5) Dia .374 (10.0) .394 p 30° Ty (9.5) Dia .374 p 30° Ty (9.5) Dia .
PAGE 6
Series MR Toggles Half-Inch Diameter Process Sealed Rotaries KNOBS Rockers A AT433 Plain Black Pushbuttons (19.0) Dia .748 (11.0) Dia .433 Programmable Illuminated PB (13.0) .512 A Color Codes: Polyamide Tip Colors: A, B, C, E, F, G, H (9.5) .374 (15.8) .622 C White (9.5) .374 (0.5) .
PAGE 7
Toggles Series MRB Rockers General Specifications Electrical Capacity (Resistive Load) Operating Temperature Range: Humidity: Vibration: Shock: Sealing: Installation Mounting Torque: Cap Installation Force: PCB Processing Soldering: Cleaning: Standards & Certifications Pushbuttons Programmable Illuminated PB Keylocks Slides G –10°C through +70°C (+14°F through +158°F) 90 ~ 95% humidity for 96 hours @ 40°C (104°F) 10 ~ 55Hz with peak-to-peak amplitude of 1.
PAGE 8
Toggles Series MRB Rockers Distinctive Characteristics Pushbuttons Double flatted bushing prevents rotation in panel and increases stability. Programmable Illuminated PB Totally sealed construction, achieved with combination of an interior o-ring, a seal between the frame and base, plus insert molded terminals, prevents contact contamination and allows automated soldering and cleaning. Tilt Tactiles Slides Rotaries Keylocks Positive detent mechanism for distinct feel and audible feedback.
PAGE 9
Series MRB Toggles Miniature PCB Process Sealed Rotaries TYPICAL SWITCH ORDERING EXAMPLE SPDT SP3T 2 DPDT DP3T B Straight with Bracket H Right Angle with Bracket Circuits & Indexing Rockers Knobs Terminals Colors A Plain Black For Plain Knob B Small Color Tipped C Large Color Tipped No Code ON NONE ON 90° 4 ON ON ON 45° MRB12B-A Plain Black Knob SPDT with ON-NONE-ON Circuit & 90° Indexing Black For Color Tipped DESCRIPTION FOR TYPICAL ORDERING EXAMPLE 2 Pushbuttons 1
PAGE 10
Series MRB Toggles Miniature PCB Process Sealed Rotaries TYPICAL SWITCH DIMENSIONS Rockers 90° Indexing • SPDT & DPDT • Straight PC 90° Pushbuttons POS 1 (0.5) Typ .020 (2.54) .100 M6 P0.75 POS 3 (2.28) .090 Programmable Illuminated PB (3.1) .122 Keyway (14.5) .571 (10.0) .394 (7.0) .276 (11.0) .433 2 5 C1 C2 Keylocks (2.28) .090 POS 1 C2 C1 (10.16) .400 (5.08) .200 (1.0) Dia Typ .039 Single pole model does not have terminals 4, 5 & C2 MRB12B (15.74) .
PAGE 11
Series MRB Toggles Miniature PCB Process Sealed Rotaries TYPICAL SWITCH DIMENSIONS 45° (9.0) .354 45° Keyway POS 3 (3.1) .122 (7.0) .276 (0.7) Typ .028 (9.4) .370 (0.5) Typ .020 (15.24) .600 (10.0) .394 MRB14H 2 1 (7.62) .300 (2.54) .100 C1 3 (2.54) Typ .100 (2.54) Typ .100 (16.3) .642 3 2 1 (2.54) Typ .100 (2.54) .100 (7.62) .300 (3.5) (0.7) Dia Typ .138 .028 (5.08) .200 (1.0) Dia Typ .039 CL Programmable Illuminated PB POS 2 (2.54) Typ .100 (5.08) .200 C1 Pushbuttons (15.