Miniature Power Level Rotaries
Series MR
General Specifications
Electrical Capacity (Resistive Load)
For MRX:
For MRY:
For MRT:
2A @ 125V AC or 1A @ 30V DC
For MRY106G: 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.
For all other MRY models: 3A @ 125V AC or 2A @ 30V DC
For MRT22: 10A @ 125V AC or 4A @ 30V DC
For MRT23: 5A @ 125V AC or 3A @ 30V DC
Other Ratings
Contact Resistance:
Insulation Resistance:
Dielectric Strength:
Mechanical Life:
Electrical Life:
Range of Operating Torque:
Contact Timing:
Indexing:
10 milliohms maximum for MRX, MRY, & MRT; 20 milliohms maximum for MRY106G
100 megohms minimum @ 500V DC for MRX & MRY
200 megohms minimum @ 500V DC for MRT
1,000V AC minimum for 1 minute minimum
15,000 operations minimum
7,500 operations minimum
0.03 ~ 0.15Nm for MRX; 0.02 ~ 0.10Nm for MRY; 0.02 ~ 0.05Nm for MRT
Nonshorting (break-before-make)
MRX: Self-cleaning, sliding contact; MRY: Rotary contactor dish; MRT: Butt contacts
45° for MRX; 60° for MRY; 120° for MRT22; 60° for MRT23
Materials & Finishes
Shaft:
Stopper Plate:
Bushing/Housing:
Movable Contacts:
End Contacts & Terminals:
Common Contacts & Terminals:
Base:
Brass with nickel plating
Steel with zinc plating for MRX & MRY
Brass with nickel plating
Silver alloy for MRX & MRT; copper with silver plating for MRY106;
copper with gold plating for MRY106G
Silver alloy & copper with silver plating for MRX & MRT; silver alloy plus brass with silver plating
for MRY106; silver alloy with gold plating for MRY106G
Copper with silver plating for MRX, MRY106 & MRT22; brass with gold plating for MRY106G;
brass with silver plating for MRT23
Phenolic resin
Environmental Data
Operating Temperature Range:
Humidity:
Vibration:
Shock:
–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)
Installation
Mounting Torque:
Cap Installation Force:
Soldering Time & Temperature:
.686Nm (6.08 lb
•
in)
19.6 ~ 29.4N (4.41 ~ 6.61 lbf)
Manual Soldering: See Profile A in Supplement section.
Standards & Certifications
UL & C-UL
Recognized:
R
MRT22 models recognized at 10A @ 125V AC; MRT23 models recognized at 5A @ 125V AC
UL File No. WOYR2.E44145
Add “/U” to end of part number to order UL mark on switch
C-UL File No. WOYR8.E44145
Add “/C-UL” to end of part number to order C-UL mark on switch
NKK Switches • email: sales@nkkswitches.com • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com
03-07
NKK [ NIHON KAIHEIKI INDUSTRY CO. LTD. ]
