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MRK112-BH

Description
SWITCH ROTARY 2-12POS 0.4VA 28V
Categoryaccessories   
File Size871KB,6 Pages
ManufacturerNKK Switches
Environmental Compliance
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MRK112-BH Overview

SWITCH ROTARY 2-12POS 0.4VA 28V

MRK112-BH Parametric

Parameter NameAttribute value
Number of pins2 ~ 12
Index stopAdjustable
Number of layers1
Number of poles per layer1
circuit per layerSP12T
Contact timeNot short circuit (BBM)
Rated current0.4VA(AC/DC)
Rated voltage - AC28V
Rated voltage - DC28V
Actuator typeKnob
Actuator length14.30mm
Projection angle30°
Contact materialPhosphor bronze
Contact platinggold
Installation typePanel mount, through hole
Terminal typePC pin
characteristicprocess seal
Depth behind panel10.10mm
Panel opening sizeRound - 6.35mm diameter
force0.510 ~ 2.039gfm
Series MR
Toggles
Half-Inch Diameter Process Sealed Rotaries
Rockers
General
Specifications
Electrical Capacity (Resistive Load)
For MRA:
For MRF or MRK:
250mA @ 125V AC
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.
Pushbuttons
Programmable Illuminated PB
Other Ratings
Contact Resistance:
Insulation Resistance:
Dielectric Strength:
Mechanical Life:
Electrical Life:
Range of Operating Torque:
Contact Timing:
Indexing:
Keylocks
10 milliohms maximum for MRA; 50 milliohms maximum for MRF & MRK
100 megohms minimum @ 500V DC
1,000V AC minimum for 1 minute minimum for MRA
500V AC minimum for 1 minute minimum for MRF & MRK
30,000 operations minimum
10,000 operations minimum
0.02 ~ 0.07Nm for MRA; 0.005 ~ 0.02Nm for MRF & MRK
Nonshorting (break-before-make)
MRA – self-cleaning, sliding contact; MRF & MRK – self-cleaning, rotary contactor disk
30°
Materials & Finishes
G
Slides
Shaft:
Stopper Plate:
Bushing/Housing:
Movable Contacts:
End Contacts & Terminals:
Common Contacts & Terminals:
Base:
Brass with nickel plating
Steel with zinc plating for MRA & MRK; polyamide cover with stopper for MRF
Zinc alloy with zinc plating
Copper with silver plating for MRA; phosphor bronze with gold plating for MRF & MRK
Brass with silver plating for MRA; phosphor bronze with gold plating for MRF & MRK
Brass with silver plating for MRA; phosphor bronze with gold plating for MRF & MRK
Diallyl phthalate for MRA; fiberglass reinforced polyamide for MRF & MRK
Rotaries
Environmental Data
Tactiles
Operating Temperature Range:
Humidity:
Vibration:
Shock:
Sealing:
Tilt
–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 1.5mm traversing the frequency range & returning
in 1 minute; 3 right angled directions for 2 hours
50G (490m/s
2
) acceleration (tested in 3 right angled directions, with 3 shocks in each direction)
MRK model meets IP67 of IEC60529 standards
Installation
Touch
Mounting Torque:
Cap Installation Force:
.686Nm (6.08 lb
in)
19.6 ~ 29.4N (4.41 ~ 6.61 lbf) for MRA & MRK
Processing
Indicators
Soldering Time & Temperature:
Cleaning:
Accessories
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.
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
Supplement
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.
G16
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