Datasheet

ManualsBrandsNKK SWITCHES ManualsKey & Rotary SwitchesRotary switch 28 V DC/AC 0.1 A Switch postions 3 2 x 45 ° 1 pc(s)

Series MRB

Miniature PCB Process Sealed Rotaries

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G28

Indicators

AccessoriesSupplement

Tactiles

Keylocks

Pushbuttons

Illuminated PB

Slides

Programmable

Rockers

Touch Tilt

Toggles

Rotaries

Electrical Capacity (Resistive Load)

Logic Level: 0.4VA maximum @ 28V AC/DC maximum

(Applicable Range 0.1mA ~ 0.1A @ 20mV ~ 28V)

Note: See Supplement Index to ﬁnd explanation of operating range.

Other Ratings

Contact Resistance: 80 milliohms maximum

Insulation Resistance: 100 megohms minimum @ 500V DC

Dielectric Strength: 500V AC minimum for 1 minute minimum

Mechanical Life: 30,000 operations minimum

Electrical Life: 10,000 operations minimum

Operating Torque: 0.04Nm average

Contact Timing: Nonshorting (break-before-make)

Indexing: 45° for On-On-On & 90° for On-None-On

Materials & Finishes

Shaft: Brass with nickel plating

Bushing: Zinc alloy with nickel plating

Frame/Bracket: Steel with tin plating

Movable Contacts: Beryllium copper spring with gold plating

Stationary Contacts: Copper with gold plating

Terminals: Brass with tin plating

Base: Polyamide

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 5 shocks in each direction)

Sealing: Use of optional o-ring AT535 with MRB meets IP67 of IEC60529 speciﬁcations

Installation

Mounting Torque: .686Nm (6.08 lb• in)

Cap Installation Force: 19.6 ~ 29.4N (4.41 ~ 6.61 lbf)

PCB Processing

Soldering: Wave Soldering Recommended: See Proﬁle B in Supplement section

Manual Soldering: See Proﬁle B in Supplement section

Cleaning: Automated cleaning. See Cleaning speciﬁcations in Supplement section.

Standards & Certifications

The MRB Series rotaries 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 (5 pages)

PAGE 1
Toggles Series MRB Rockers General Specifications Electrical Capacity (Resistive Load) Pushbuttons Logic Level: Programmable Illuminated PB Other Ratings Tilt Tactiles Slides Rotaries Keylocks Contact Resistance: Insulation Resistance: Dielectric Strength: Mechanical Life: Electrical Life: Operating Torque: Contact Timing: Indexing: Materials & Finishes Shaft: Bushing: Frame/Bracket: Movable Contacts: Stationary Contacts: Terminals: Base: G Environmental Data Operating Temperature Ra
PAGE 2
Toggles Series MRB Miniature PCB Process Sealed Rotaries 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. Break-before-make contact timing with sliding contact mechanism.
PAGE 3
Series MRB Toggles Miniature PCB Process Sealed Rotaries TYPICAL SWITCH ORDERING EXAMPLE 1 Pushbuttons Rockers MRB Programmable Illuminated PB Poles 1 SPDT SP3T 2 DPDT DP3T B B Straight with Bracket H Right Angle with Bracket Circuits & Indexing A Knobs Terminals Colors A Plain Black B Small Color Tipped For Plain Knob 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 Tippe
PAGE 4
Series MRB Toggles Miniature PCB Process Sealed Rotaries TYPICAL SWITCH DIMENSIONS (0.7) Dia Typ .028 Keyway (14.5) .571 (10.0) .394 (11.0) .433 (7.0) .276 C1 C2 4 1 5 2 C2 C1 (15.74) .620 (0.7) Typ .028 (2.54) Typ .100 (3.5) .138 (10.16) .400 (10.16) .400 Actuator shown in Position 1 (5.08) .200 (1.0) Dia Typ .039 Single pole model does not have terminals 4, 5 & C2 MRB12B 90° Indexing • SPDT • Right Angle PC POS 1 (15.74) .620 Double Flat with M6 P0.75 90° (9.0) .
PAGE 5
Series MRB Toggles Miniature PCB Process Sealed Rotaries TYPICAL SWITCH DIMENSIONS Rockers 45° Indexing • SP3T • Right Angle PC (2.28) .090 POS 1 (15.74) .620 Double Flat with M6 P0.75 45° Pushbuttons POS 2 (9.0) .354 45° Keyway POS 3 Programmable Illuminated PB (3.1) Dia .122 (0.5) Typ .020 (15.24) .600 (7.0) .276 (0.7) Typ .028 (9.4) .370 (10.0) .394 MRB14H 2 1 (7.62) .300 (2.54) .100 C1 3 (2.54) Typ .100 (2.54) Typ .100 2 1 (1.0) Dia Typ .