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03-07

Miniature Power Level Rotaries

Series MR

General Specifications

Electrical Capacity (Resistive Load)

For MRX:

2A @ 125V AC or 1A @ 30V DC

For MRY:

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 MRT:

For MRT22: 10A @ 125V AC or 4A @ 30V DC

For MRT23: 5A @ 125V AC or 3A @ 30V DC

Other Ratings

Contact Resistance:

10 milliohms maximum for MRX, MRY, & MRT; 20 milliohms maximum for MRY106G

Insulation Resistance:

100 megohms minimum @ 500V DC for MRX & MRY

200 megohms minimum @ 500V DC for MRT

Dielectric Strength:

1,000V AC minimum for 1 minute minimum

Mechanical Life:

15,000 operations minimum

Electrical Life:

7,500 operations minimum

Range of Operating Torque:

0.03 ~ 0.15Nm for MRX; 0.02 ~ 0.10Nm for MRY; 0.02 ~ 0.05Nm for MRT

Contact Timing:

Nonshorting (break-before-make)

MRX: Self-cleaning, sliding contact; MRY: Rotary contactor dish; MRT: Butt contacts

Indexing:

45° for MRX; 60° for MRY; 120° for MRT22; 60° for MRT23

Materials & Finishes

Shaft:

Brass with nickel plating

Stopper Plate:

Steel with zinc plating for MRX & MRY

Bushing/Housing:

Brass with nickel plating

Movable Contacts:

Silver alloy for MRX & MRT; copper with silver plating for MRY106;

copper with gold plating for MRY106G

End Contacts & Terminals:

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

Common Contacts & Terminals:

Copper with silver plating for MRX, MRY106 & MRT22; brass with gold plating for MRY106G;

brass with silver plating for MRT23

Base:

Phenolic resin

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:

Installation

Mounting Torque:

Cap Installation Force:

19.6 ~ 29.4N (4.41 ~ 6.61 lbf)

Soldering Time & Temperature:

Manual Soldering: See Profile A in Supplement section.

Standards & Certifications

UL & C-UL

MRT22 models recognized at 10A @ 125V AC; MRT23 models recognized at 5A @ 125V AC

Recognized:

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

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