Series MR Miniature Power Level Rotaries 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 G 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 2 Shock: 50G (490m/s ) acceleration (tested in 3 right angled directions, with 3 shocks in each direction) Installation Mounting Torque: .686Nm (6.08 lb•in) 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: File No. E44145 - Recognized only when ordered with marking on switch. Add “/U” or “/CUL” before dash in part number to order UL recognized switch. MRT22 models recognized at 10A @ 125V AC; MRT23 models recognized at 5A @ 125V AC G22 www.nkk.com Supplement Accessories Indicators Touch Tilt Tactiles Slides Rotaries Keylocks Programmable Illuminated PB Pushbuttons Rockers Toggles Miniature Power Level Rotaries Series MR Distinctive Characteristics Positive detent mechanism for distinct feel and audible feedback. Metal bushing and housing construction increases durability. Adjustable stopper plate allows 2-8 position settings. High contact reliability achieved by the self-cleaning contact mechanism. Break-before-make contact timing with various mechanism types: sliding contacts in MRX, contactor dish in MRY, and butt contacts in MRT models. G Terminal types include PC-turret for MRX, turret for MRY, and solder lug for MRT models. Molded-in PC-turret and turret terminals prevent entry of flux and other contaminants. Actual Size www.nkk.com G23 Supplement Accessories Indicators Touch Tilt Tactiles Slides Rotaries Keylocks Programmable Illuminated PB Pushbuttons Rockers Toggles 2 MRT-22 Series MR Miniature Power Level Rotaries TYPICAL SWITCH ORDERING EXAMPLE MR X 108 A Actuators & Terminals Poles & Circuits Knobs Colors A Plain Black For Plain Knob 108 SP with 2-8 Positions B Small Color Tipped No Black Shaft Actuated with Code X 204 DP with 2-4 Positions C Large Color Tipped PC-Turret Terminals For Color Tipped 402 4P with 2 Positions A Black 106 SP with 2-6 Positions B White Shaft Actuated with Y SP with 2-6 Positions C Red Turret Terminals 106G Gold Contacts 0.4VA E Yellow F Green 22 DPDT ON-NONE-ON Shaft Actuated with T G Blue Solder Lug Terminals * 23 DPDT ON-OFF-ON H Gray * Wire harness & cable assemblies DESCRIPTION FOR TYPICAL ORDERING EXAMPLE offered only in Americas MRX108-A G Shaft Actuated with Plain Black Knob IMPORTANT: MRT Switches are supplied without UL & cULus marking unless specified. SP with 2-8 UL & cULus recognized only when Adjustable Positions ordered with marking on the switch. Specific models, ratings, & ordering in- structions are noted on General Specifi- cations page. PC-Turret Terminals ACTUATORS & TERMINALS Shaft Actuated with Shaft Actuated with Shaft Actuated with Y T X PC-Turret Terminals Turret Terminals Solder Lug Terminals (2.3) (2.3) (2.3) .091 .091 .091 1 1 8 (4.0) (3.15) Dia (3.15) Dia (3.15) Dia .157 (5.0) (5.0) (2.0) .124 .124 .124 (20.0) .197 (20.0) .197 (20.0) .079 (2.4) .787 .787 .787 .094 (0.8) (1.3) Dia (0.9) .031 .051 .035 (1.0) Thk = (0.9) (1.0) (1.0) Thk = (0.7) .039 .035 .039 .039 .028 Shaft Terminal Shaft Terminal Shaft Terminal G24 www.nkk.com 1 6 Supplement Accessories Indicators Touch Tilt Tactiles Slides Rotaries Keylocks Programmable Illuminated PB Pushbuttons Rockers Toggles B B 2 2 2 1 3 3 C 2 4 4 p 2 y 50° T ° 5 4 Miniature Power Level Rotaries Series MR POLES & CIRCUITS Pole Model Number of Positions Stopper Settings Number of Terminals Schematics A MRX108 2-8 2, 3, 4, 5, 6, 7, 8 1 COM, 8 LOAD 12 34 56 78 SP A MRY106 2-6 2, 3, 4, 5, 6 1 COM, 6 LOAD MRY106G 12 34 56 A B DP MRX204 2-4 2, 3, 4 2 COM, 8 LOAD 12 34 12 34 2-3 2-1 MRT22 2 ON-NONE-ON 5-6 5-4 2 (COM) 5 DPDT 13 4 6 2-3 OPEN 2-1 MRT23 3 ON-OFF-ON 5-6 OPEN 5-4 A B C D 4P MRX402 2 1 & 2 4 COM, 8 LOAD 12 12 12 12 POSITION SETTING FOR MRX & MRY MODELS Mounting Hardware Packaged Loose with Each Switch G Each switch is supplied with the stopper set for the maximum number of positions allowed for that model. Prior to installation, the desired position AT513M Hex Face Nut setting should be made. Contact factory for continuous rotation. AT507M Locking Ring 1. Using the actuator knob, turn the shaft counterclockwise to the extreme left. AT509 Lockwasher If the shaft is not turned to this extreme position where the white line on the Factory Assembled: knob points to the number 1 position shown on the side of the switch, proper setting cannot be achieved. Hex Nut 2. Remove the knob from the shaft and loosen the nut far enough to allow Stopper Plate raising the stopper plate for resetting to the desired position. 3. Note the position numbers on the side of the switch; these correspond to the terminal numbers and stopper holes. Insert the stopper in the hole numbered for the maximum desired number of stop settings. Satisfactory switch functioning cannot be assured if the stopper plate is not properly 1 1 8 positioned. MRX MRY 4. Tighten the nub (beveled side up) firmly against the stopper plate. TYPICAL SWITCH DIMENSIONS Single, Double & Four Pole MRX • PC-Turret Terminals 5 (0.9) Typ M6 P0.75 .035 (1.5) Typ .059 (0.5) Typ 1 .020 (0.8) Typ (2.3) .031 .091 1 (4.0) Dia (1.0) (5.0) .157 .039 .197 Keyway (14.0) Dia (3.15) Dia (17.3) (20.0) (5.6) (10.0) .551 .124 .681 .787 .220 .394 MRX108 www.nkk.com G25 1 22.5° 6 A A 6 2 2 p y T ° 0 9 3 7 1 Supplement Accessories Indicators Touch Tilt Tactiles Slides Rotaries Keylocks Programmable Illuminated PB Pushbuttons Rockers Toggles D 4 8 2 1 COM 1 COM 1 COM 1 C A 2 p 3 p y T y ° p 0 T y 9 T ° ° ° ° 0 ° 0 6 5 5 5 6 . . . 2 2 2 2 2 2 Series MR Miniature Power Level Rotaries TYPICAL SWITCH DIMENSIONS MRY • Turret Terminals Single Pole (3.15) Dia (1.3) Dia Typ M6 P0.75 .124 .051 4 3 A (9.0) Dia 5 .354 2 6 (2.3) 1 (1.85) Dia Typ .091 .073 (1.0) (5.0) .039 .197 (14.0) Dia (20.0) (5.6) (16.9) (8.0) Keyway .551 .787 .220 .665 .315 MRY106 MRT • Solder Lug Terminals Double Pole (2.3) 120° M6 P0.75 .091 (5.0) G .197 (24.0) (3.15) Dia Keyway .945 .124 (4.5) .177 4 5 6 32 1 (7.5) (1.1) x (2.0) Typ .295 .043 x .079 (13.0) (4.0) (20.0) (8.5) (12.0) .512 .157 .787 .335 .472 MRT22 PC FOOTPRINTS FOR MRX SINGLE, DOUBLE, & FOUR POLE Single Pole Double Pole (1.98) Dia (1.98) Dia Typ 5 1 .078 .078 4 6 4 2 A A (10.0) Dia (10.0) Dia 3 .394 7 3 .394 3 B 2 8 2 4 (1.32) Dia Typ 1 1 (4.5) Dia (1.32) Dia Typ (4.5) Dia .052 .177 .052 .177 Four Pole (1.98) Dia Typ 1 .078 2 2 A C (10.0) Dia 1 .394 1 D B 2 2 1 (4.5) Dia (1.32) Dia Typ .177 .052 G26 www.nkk.com 18° p p p y y y T T T ° ° ° 4 5 5 5 4 4 4 5 Supplement Accessories Indicators Touch Tilt Tactiles Slides Rotaries Keylocks Programmable Illuminated PB Pushbuttons Rockers Toggles M 6 O Miniature Power Level Rotaries Series MR KNOBS AT433 AT4103 Small AT4104 Large A B C Plain Black Color Tipped Color Tipped (18.0) Dia (16.0) Dia .709 (19.0) Dia .630 .748 (11.0) Dia (9.5) Dia .433 (11.0) Dia .374 .433 (15.8) (14.3) (13.0) .622 .563 (9.5) (9.5) (9.5) .512 .374 .374 .374 (26.3) (24.8) (23.5) 1.035 .976 .925 Base Material: Polyester Base Material: Polyester Material: Polyacetal Base Color: Black Base Color: Black Color: Black only Polyamide Tip Polyamide Tip Colors: A, B, C, E, F, G, H Colors: A, B, C, E, F, G, H A B C E F G H Color Codes: Black White Red Yellow Green Blue Gray G PANEL CUTOUTS & MAXIMUM EFFECTIVE PANEL THICKNESS Without With Maximum Effective Panel Thickness Keyway Keyway With Standard Hardware: MRX & MRY .095” (2.4mm); MRT .106” (2.7mm) (5.6) .220 (6.5) (6.35) Dia Without Locking Ring: MRX & MRY .126” (3.2mm); MRT .138” (3.5mm) (6.35) Dia .256 (0.6) .250 .250 .024 (2.2) Dia .087 www.nkk.com G27 Supplement Accessories Indicators Touch Tilt Tactiles Slides Rotaries Keylocks Programmable Illuminated PB Pushbuttons Rockers Toggles