Snap-Action Pushbuttons Series MB2400 Distinctive Characteristics Snap-acting mechanism gives smooth actuation, short stroke, light touch, and audible feedback. This mechanism also provides long mechanical life. High torque bushing construction prevents rotation or separation from frame during installation. Antijamming design protects contacts from damage due to excessive downward force on the actuator. Compatible companions with M series toggles. Body, bushing, and footprint dimensions ideal for mounting MB2400 pushbuttons and M toggles next to one another. Stainless steel frame resists corrosion. Longer center solder lug terminal simplifies wiring and soldering. Silver contacts of specially composed alloy for hardness. Epoxy sealed terminals prevent entry of solder flux and other contaminants. Prominent external insulating barriers increase insulation resistance and dielectric strength. Actual Size NKK Switches • email: [email protected] • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com 03-07 Snap-Action Pushbuttons Series MB2400 General Specifications Electrical Capacity (Resistive Load) Power Level (code W): Logic Level (code G): Logic/Power Level (code A): Other Ratings Contact Resistance: Insulation Resistance: Dielectric Strength: Mechanical Life: Electrical Life: Nominal Operating Force: Travel Materials & Finishes Plunger: Bushing: Frame: Case: Base: Movable Contactor: Movable Contacts: Stationary Contacts: Terminals: Environmental Data Operating Temp Range: Humidity: Vibration: Shock: Installation Mounting Torque: Cap Installation Force: Soldering: Cleaning: Standards & Certifications Flammability Standards: UL & C-UL Recognized: R CSA Certified: 3A @ 125V AC 0.4VA maximum @ 28V AC/DC maximum (Applicable Range 0.1mA ~ 0.1A @ 20mV ~ 28V) Combines W & G ratings Note: Find additional explanation of dual rating & operating range in Supplement section. 20 milliohms maximum for silver; 30 milliohms maximum for gold 1,000 megohms minimum @ 500V DC 1,000V AC minimum between contacts for 1 minute minimum; 1,500V AC minimum between contacts & case for 1 minute minimum 200,000 operations minimum 25,000 operations minimum for silver; 100,000 operations minimum for gold Single pole 2.45N; double pole 3.92N Pretravel .024” (0.6mm); Overtravel .016” (0.4mm); Total Travel .039” (1.0mm) Brass with nickel plating Brass with nickel plating Stainless steel Polybutylene terephthalate (PBT) Diallyl phthalate resin Phosphor bronze with silver or gold plating Silver alloy (code W); copper with gold plating (code G); or silver alloy with gold plating (code A) Silver alloy with silver plating (code W); copper or brass with gold plating (code G); or silver with gold plating (code A) Copper or brass with silver plating; copper or brass with gold plating –30°C through +85°C (–22°F through +185°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/s2) acceleration (tested in 6 right angled directions, with 3 shocks in each direction) 1.5Nm (13.0 lb • in) for double nut; 0.7Nm (6.0 lb • in) for single nut 80.0N (18.0 lbf) maximum downward force on actuator Wave Soldering (PC version): See Profile B in Supplement section. Manual Soldering: See Profile B in Supplement section. These devices are not process sealed. Hand clean locally using alcohol based solution. See Cleaning Specifications in Supplement section. UL94V-0 available All single and double pole models recognized at 3A @ 125V AC or 0.4VA max. @ 28V DC max; 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. Single pole models with PC, solder lug, or Wirewrap terminals & double pole with PC or Wirewrap terminals certified at 3A @ 125V AC or 0.4VA @ 28V maximum; CSA File No. 023535-0-000; add “/C” to end of part number to order CSA mark on switch. NKK Switches • email: [email protected] • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com 03-07 Series MB2400 Snap-Action Bracket PC Mount TYPICAL SWITCH ORDERING EXAMPLE A2 11 MB24 POLES & CIRCUITS 11 61 SPDT DPDT ON ON G 40 CONTACT MATERIALS & RATINGS (ON) (ON) W Silver Rated 3A @ 125V AC G Gold Rated 0.4VA max @ 28V AC/DC max A Gold over Silver Rated 3A @ 125V AC & 0.4VA max @ 28V AC/DC max ( ) = Momentary BUSHINGS F A CAPS F .201” (5.1mm) Dia. H .295” (7.5mm) Dia. CAP COLORS A Black B White C Red A2 .280” (7.1mm) Smooth with Keyway A1 .280” (7.1mm) Threaded with Keyway E2 .285” (7.24mm) Smooth with D Flat E1 .285” (7.24mm) Threaded with D Flat 13 .250” (6.35mm) Straight PC with .465” (11.8mm) Bracket .350” (8.9mm) Smooth with Keyway 15 .425” (10.8mm) Straight PC with .630” (16.0mm) Bracket S2 17 .964” (24.5mm) Straight PC with 1.150” (29.2mm) Bracket S1 .350” (8.9mm) Threaded with Keyway TERMINALS With Bracket With Reinforced Bracket IMPORTANT: 23 .250” (6.35mm) Straight PC with .465” (11.8mm) Bracket 25 .425” (10.8mm) Straight PC with .630” (16.0mm) Bracket 26 .750” (19.05mm) Straight PC with .953” (24.2mm) Bracket With Terminal Support Switches are supplied without UL, C-UL, & CSA markings unless specified. Specific models & ratings noted on General Specifications page. 30 Right Angle PC 32 Right Angle PCB w/Reverse Circuit (1-pole & 0.4VA rating only) 40 Vertical PC DESCRIPTION FOR TYPICAL ORDERING EXAMPLE MB2411A2G40-FA .280” (7.1mm) Smooth Bushing with Keyway Vertical PC Terminals Black .201” (5.1mm) Diameter Cap SPDT ON-(ON) Circuit Gold Contacts with 0.4VA Rating NKK Switches • email: [email protected] • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com 03-07 Snap-Action Bracket PC Mount Series MB2400 POLES & CIRCUITS Plunger Position ( ) = Momentary Normal Connected Terminals Down Keyway Normal Throw & Switch Schematics Down Keyway Note: Terminal numbers are not actually on the switch. * When using terminal code 32, connected terminals and schematic are reversed. Pole Model SP *MB2411 ON (ON) 1-3 1-2 SPDT DP MB2461 ON (ON) 1-3 4-6 1-2 4-5 DPDT 1 (COM) 3 2 1 (COM) 3 2 4 6 5 BUSHINGS Note: Plunger selection is not required for MB2400 pushbuttons. The plunger can be used with or without a cap. A2 .280” (7.1mm) Smooth with Keyway (8.0) Dia .315 (5.54) (7.1) .218 .280 .280” (7.1mm) Threaded with Keyway (0.8) .031 (8.0) Dia .315 (8.0) Dia .315 Maximum Panel Thickness with Standard Hardware: .068” (1.74mm) (2.5) .098 (0.9) .035 Maximum Panel Thickness with Standard Hardware: .068” (1.74mm) (0.9) .035 1/4-40 Thd (2.84) Dia .112 (8.0) Dia .315 (5.54) (7.24) .218 .285 (8.9) .350 .350” (8.9mm) Threaded with Keyway (0.8) .031 (2.5) .098 (0.9) .035 (5.54) .218 S1 1/4-40 Thd (2.84) Dia .112 (2.5) .098 (2.5) .098 (0.9) .035 .285” (7.24mm) Threaded with D Flat 1/4-40 Thd (2.84) Dia .112 (5.54) (7.1) .218 .280 (8.0) Dia .315 (5.54) (7.24) .218 .285 E1 (6.2) Dia .244 (2.84) Dia .112 (0.8) .031 (2.5) .098 (0.9) .035 .350” (8.9mm) Smooth with Keyway S2 (6.2) Dia .244 (2.84) Dia .112 (2.5) .098 A1 .285” (7.24mm) Smooth with D Flat (6.2) Dia .244 (2.84) Dia .112 (0.8) .031 (8.0) Dia .315 E2 (5.54) .218 (8.9) .350 (0.9) .035 Maximum Panel Thickness with Standard Hardware: .134” (3.40mm) Panel Cutouts For A1, A2, S1, or S2 Bushing with Keyway For E1 or E2 Bushing with D Flat (5.6) .220 (6.5) Dia .256 (0.6) .024 (6.5) Dia .256 With Optional Locking Ring (5.8) .228 (6.5) Dia .256 (2.2) Dia .087 (6.5) .256 Standard hardware includes 2 hex nuts & 1 lockwasher. Hardware is illustrated following the Typical Switch Dimension drawings. NKK Switches • email: [email protected] • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com 03-07 Snap-Action Bracket PC Mount Series MB2400 CONTACT MATERIALS & RATINGS W Silver over Silver Power Level 3A @ 125V AC G Gold over Brass or Copper Logic Level 0.4VA maximum @ 28V AC/DC maximum Note: Complete explanation of operating range in Supplement section. A Power Level or Logic Level Gold over Silver 3A @ 125V AC or 0.4VA maximum @ 28V AC/DC maximum Note: This dual rated option is suitable when two or more identical switches are used in logic and in power circuits within the same application. See Supplement section for complete explanation of dual rating and operating range. TERMINALS Straight PC Mount with Bracket .250” (6.35mm) Terminal w/.465” (11.8mm) Bracket 13 30 Straight PC Mount with Reinforced Bracket .425” (10.8mm) Terminal w/.630” (16.0mm) Bracket 15 32 Right Angle PC .964” (24.5mm) Terminal w/1.150” (29.2mm) Bracket 17 .250” (6.35mm) Terminal w/.465” (11.8mm) Bracket 23 .425” (10.8mm) Terminal w/.630” (16.0mm) Bracket 25 Right Angle PCB w/Reverse Circuit Available only in single pole with 0.4VA rating (code G) 40 .750” (19.05mm) Terminal w/.953” (24.2mm) Bracket 26 Vertical PC PCB footprints are on the following Typical Switch Dimension pages. CAPS & CAP COLORS F AT475 .201” (5.1mm) Diameter Cap (5.1) Dia .201 (6.4) .253 H (4.0) .157 AT496 .295” (7.5mm) Diameter Cap Material: Polyamide Material: Polyamide Finish: Glossy Finish: Glossy Cap Colors Available: A Black B White (7.5) Dia .295 (6.4) .253 C (4.0) .157 Red NKK Switches • email: [email protected] • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com 03-07 Series MB2400 Snap-Action Bracket PC Mount TYPICAL SWITCH DIMENSIONS Straight PC • Bracket (6.4) .253 (7.1) .280 (5.1) Dia Typ .201 (2.8) Dia Typ .112 (6.2) Dia Typ .244 Single Pole (2.4) .096 (0.9) .035 TERMINAL LENGTH BRACKET LENGTH 1 C 2 NO 3 NC (0.5) Typ .020 (0.8) Typ .031 (4.7) Typ .185 MB2411A2G13-FA (4.5) Typ .177 (4.8) Typ .189 (1.17) Typ .046 (1.17) Typ .046 (4.8) Typ .189 (3.2) Typ .126 (8.0) .315 (15.8) .622 Terminal Code: Terminal Length: Bracket Length: 13 .250 (6.35mm) .465 (11.8mm) 15 .425 (10.8mm) .630 (16.0mm) 17 .964 (24.5mm) 1.150 (29.2mm) Double Pole (12.7) .500 (1.6) Typ .063 (2.4) Typ .095 (1.6) Typ .063 (7.9) Typ .311 (4.7) Typ .185 3 (7.9) Typ .311 2 (4.7) Typ .185 1 (1.8) Dia Typ .073 (1.5) Dia Typ .059 3 6 2 5 1 4 (1.8) Dia Typ .073 (1.5) Dia Typ .059 CL Straight PC • Reinforced Bracket (6.4) .253 (7.1) .280 (5.1) Dia Typ .201 (2.8) Dia Typ .112 (6.2) Dia Typ .244 Single Pole (2.4) .096 (0.9) .035 TERMINAL LENGTH BRACKET LENGTH 1 C 2 NO (0.5) Typ .020 (0.8) Typ .031 (4.7) Typ .185 3 NC (4.5) Typ .177 (4.8) Typ .189 (1.27) Typ .050 (1.17) Typ .046 (6.35) Typ .250 (4.8) Typ .189 (19.05) .750 MB2411A2G23-FA Double Pole (9.1) .358 (2.4) Typ .095 (3.18) Typ .125 (3.18) Typ .125 Terminal Code: Terminal Length: Bracket Length: (9.53) Typ .375 23 .250 (6.35mm) .465 (11.8mm) (4.7) Typ .185 25 .425 (10.8mm) .630 (16.0mm) 26 .750 (19.05mm) .953 (24.2mm) 3 2 (1.8) Dia Typ .073 (1.5) Dia Typ .059 (12.7) .500 1 (9.53) Typ .375 (4.7) Typ .185 (1.8) Dia Typ .073 (1.5) Dia Typ .059 3 6 2 5 1 4 CL NKK Switches • email: [email protected] • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com 03-07 Series MB2400 Snap-Action Bracket PC Mount TYPICAL SWITCH DIMENSIONS Right Angle PC Single Pole (2.84) Dia .112 (6.2) Dia .244 Keyway (5.1) Dia .201 (2.9) .114 (5.08) .200 (1.4) Typ .055 (2.4) .096 (13.0) .512 MB2411A2G30-FA (7.9) .311 (6.22) .245 (6.4) .253 Right Angle PC (7.32) .288 1 3 (0.4) .016 (12.7) .500 (0.8) Typ .031 (4.7) Typ .185 (1.27) .050 1 (12.7) .500 (4.3) .169 (2.84) Dia .112 (6.2) Dia .244 (1.8) Dia Typ .073 (2.54) Typ .100 (2.9) .114 (5.08) .200 (12.7) .500 (1.4) Typ .055 (2.4) .096 (6.4) .253 (13.0) .512 MB2461A2G30-FA (6.2) .245 Right Angle PCB (7.32) .288 (4.7) Typ (3.81) .185 6 .150 COM NO NC (5.1) Dia .201 4 5 6 1 2 3 3 (0.8) Typ .031 (4.7) Typ .185 (1.27) Typ .050 (3.8) .150 4 2 1 (12.7) .500 (4.3) .169 (0.4) .016 (12.7) .500 5 (1.8) Dia Typ .073 (2.54) Typ .100 Single Pole • Reverse Circuit (2.84) Dia .112 (6.2) Dia .244 Keyway (7.9) .311 (5.1) Dia .201 (1.4) Typ .055 (5.08) .200 (6.4) .253 (6.2) .245 (2.4) .096 (8.9) .350 (0.4) .016 (9.3) .365 (3.96) Typ .156 NC NO COM (4.6) .180 Vertical PC 3 (2.7) .106 (0.8) .031 2 1 (8.5) .335 (1.4) Typ .055 (3.96) Typ .156 (13.0) .512 1 2 3 (9.27) .365 (1.8) Dia Typ .073 (2.54) Typ .100 3 Single Pole (2.84) Dia .112 (6.2) Dia .244 Keyway (1.4) Typ .055 (5.08) .200 (2.4) .096 NC (6.2) .245 (6.4) .253 (7.32) .288 (0.4) .016 (12.7) .500 (3.81) Typ .150 3 NO 2 COM 1 (12.7) .500 (1.27) .050 (8.0) .315 (2.7) .106 (0.8) Typ .031 (3.8) Typ .150 (1.8) Dia Typ .073 (2.54) Typ .100 (2.4) Typ .094 NC 6 3 NO 5 2 COM 4 1 Double Pole 2 1 (13.0) .512 (5.1) Dia .201 MB2411A2G40-FA 2 2 3 Double Pole Keyway MB2411A2G32-FA (4.7) Typ .185 COM NO NC (4.8) .189 (12.7) .500 (3.81) Typ .150 (1.27) Typ .050 3 6 2 5 1 4 (12.7) .500 (1.8) Dia Typ .073 (2.54) Typ .100 NKK Switches • email: [email protected] • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com 03-07 Snap-Action Bracket PC Mount Series MB2400 HARDWARE Standard Hardware 1/4-40 Thd AT513H Inch Threaded Hexagon Nut (8.0) .315 2 included with each switch AT509 Lockwasher (6.4) Dia (10.2) Dia .252 .402 1 included with each switch Material: Brass with Nickel Plating (9.0) .354 (1.5) .059 Material: Steel with Zinc/Chromate (0.5) .020 Optional Hardware AT507H Locking Ring for A1 or S1 Bushing (6.35) Dia .250 (12.0) Dia .472 (2.0) .079 Material: Steel with Zinc/Chromate Material: Steel with Zinc/Chromate (5.5) or .229 (1.7) .067 AT515 Locking Ring for E1 Bushing (0.8) .031 (6.2) Dia .244 (2.0) .079 (1.68) .066 (5.5) .217 (12.0) Dia .472 (0.8) .031 NKK Switches • email: [email protected] • Phone (480) 991-0942 • Fax (480) 998-1435 • www.nkkswitches.com 03-07