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| 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: sales@nkkswitches.com * 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): 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. Other Ratings Contact Resistance: Insulation Resistance: Dielectric Strength: Mechanical Life: Electrical Life: Nominal Operating Force: Travel 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) Materials & Finishes Plunger: Bushing: Frame: Case: Base: Movable Contactor: Movable Contacts: Stationary Contacts: Terminals: 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 Environmental Data Operating Temp Range: Humidity: Vibration: Shock: -30C through +85C (-22F through +185F) 90 ~ 95% humidity for 96 hours @ 40C (104F) 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) Installation Mounting Torque: Cap Installation Force: Soldering: Cleaning: 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. Standards & Certifications Flammability Standards: UL & C-UL Recognized: R CSA Certified: 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. 03-07 NKK Switches * email: sales@nkkswitches.com * Phone (480) 991-0942 * Fax (480) 998-1435 * www.nkkswitches.com Snap-Action Bracket PC Mount Series MB2400 F CAPS F H .201" (5.1mm) Dia. .295" (7.5mm) Dia. TYPICAL SWITCH ORDERING EXAMPLE MB24 POLES & CIRCUITS 11 61 SPDT DPDT ON ON 11 A2 G 40 A (ON) (ON) CONTACT MATERIALS & RATINGS W G Silver Rated 3A @ 125V AC Gold Rated 0.4VA max @ 28V AC/DC max Gold over Silver Rated 3A @ 125V AC & 0.4VA max @ 28V AC/DC max ( ) = Momentary CAP COLORS A B C Black White Red BUSHINGS A2 A1 E2 E1 S2 S1 .280" (7.1mm) Smooth with Keyway .280" (7.1mm) Threaded with Keyway .285" (7.24mm) Smooth with D Flat .285" (7.24mm) Threaded with D Flat .350" (8.9mm) Smooth with Keyway .350" (8.9mm) Threaded with Keyway A TERMINALS With Bracket 13 15 17 23 25 26 30 32 40 .250" (6.35mm) Straight PC with .465" (11.8mm) Bracket .425" (10.8mm) Straight PC with .630" (16.0mm) Bracket .964" (24.5mm) Straight PC with 1.150" (29.2mm) Bracket With Reinforced Bracket .250" (6.35mm) Straight PC with .465" (11.8mm) Bracket .425" (10.8mm) Straight PC with .630" (16.0mm) Bracket .750" (19.05mm) Straight PC with .953" (24.2mm) Bracket With Terminal Support Right Angle PC Right Angle PCB w/Reverse Circuit (1-pole & 0.4VA rating only) Vertical PC IMPORTANT: Switches are supplied without UL, C-UL, & CSA markings unless specified. Specific models & ratings noted on General Specifications page. DESCRIPTION FOR TYPICAL ORDERING EXAMPLE MB2411A2G40-FA .280" (7.1mm) Smooth Bushing with Keyway Black .201" (5.1mm) Diameter Cap SPDT ON-(ON) Circuit Gold Contacts with 0.4VA Rating NKK Switches * email: sales@nkkswitches.com * Phone (480) 991-0942 * Fax (480) 998-1435 * www.nkkswitches.com 03-07 Vertical PC Terminals Snap-Action Bracket PC Mount POLES & CIRCUITS Plunger Position ( ) = Momentary Normal Pole SP Model *MB2411 Keyway Series MB2400 Throw & Switch Schematics Note: Terminal numbers are not actually on the switch. * When using terminal code 32, connected terminals and schematic are reversed. 1 (COM) Connected Terminals Normal Keyway Down Down ON (ON) 1-3 1-2 SPDT 3 1 (COM) 2 4 6 5 DP MB2461 ON (ON) 1-3 4-6 1-2 4-5 DPDT 3 2 BUSHINGS Note: Plunger selection is not required for MB2400 pushbuttons. The plunger can be used with or without a cap. A2 (0.8) .031 (8.0) Dia .315 .280" (7.1mm) Smooth with Keyway (6.2) Dia .244 (2.84) Dia .112 (2.5) .098 (5.54) (7.1) .218 .280 (0.9) .035 E2 .285" (7.24mm) Smooth with D Flat (6.2) Dia .244 (2.84) Dia .112 S2 (0.8) .031 (8.0) Dia .315 (0.9) .035 .350" (8.9mm) Smooth with Keyway (6.2) Dia .244 (2.84) Dia .112 (2.5) .098 (5.54) .218 (8.9) .350 (0.9) .035 (8.0) Dia .315 (2.5) .098 (5.54) (7.24) .218 .285 A1 (0.8) .031 (8.0) Dia .315 .280" (7.1mm) Threaded with Keyway 1/4-40 Thd (2.84) Dia .112 (2.5) .098 (5.54) (7.1) .218 .280 (0.9) .035 E1 .285" (7.24mm) Threaded with D Flat 1/4-40 Thd (2.84) Dia .112 S1 (0.8) .031 (8.0) Dia .315 (0.9) .035 .350" (8.9mm) Threaded with Keyway 1/4-40 Thd (2.84) Dia .112 (2.5) .098 (5.54) .218 (8.9) .350 (0.9) .035 (8.0) Dia .315 (2.5) .098 (5.54) (7.24) .218 .285 Maximum Panel Thickness with Standard Hardware: .068" (1.74mm) Maximum Panel Thickness with Standard Hardware: .068" (1.74mm) Panel Cutouts Maximum Panel Thickness with Standard Hardware: .134" (3.40mm) For A1, A2, S1, or S2 Bushing with Keyway For E1 or E2 Bushing with D Flat With Optional Locking Ring (5.6) .220 (6.5) Dia .256 (0.6) .024 (6.5) Dia .256 (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: sales@nkkswitches.com * Phone (480) 991-0942 * Fax (480) 998-1435 * www.nkkswitches.com 03-07 Snap-Action Bracket PC Mount CONTACT MATERIALS & RATINGS W G Silver over Silver Power Level Series MB2400 3A @ 125V AC Gold over Brass or Copper Logic Level 0.4VA maximum @ 28V AC/DC maximum Note: Complete explanation of operating range in Supplement section. A Gold over Silver Power Level or Logic Level 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 Straight PC Mount with Reinforced Bracket .964" (24.5mm) Terminal w/1.150" (29.2mm) Bracket .425" (10.8mm) Terminal w/.630" (16.0mm) Bracket .250" (6.35mm) Terminal w/.465" (11.8mm) Bracket .425" (10.8mm) Terminal w/.630" (16.0mm) Bracket .750" (19.05mm) Terminal w/.953" (24.2mm) Bracket 13 15 17 23 25 26 30 Right Angle PC 32 Right Angle PCB w/Reverse Circuit Available only in single pole with 0.4VA rating (code G) 40 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 (7.5) Dia .295 (6.4) .253 (4.0) .157 Material: Polyamide Finish: Glossy Cap Colors Available: Material: Polyamide Finish: Glossy A Black B White C Red 03-07 NKK Switches * email: sales@nkkswitches.com * Phone (480) 991-0942 * Fax (480) 998-1435 * www.nkkswitches.com Snap-Action Bracket PC Mount TYPICAL SWITCH DIMENSIONS Straight PC * Bracket (6.4) .253 (7.1) .280 (2.4) .096 (0.9) .035 TERMINAL LENGTH (0.5) Typ .020 (0.8) Typ .031 (4.7) Typ .185 (15.8) .622 Series MB2400 (5.1) Dia Typ .201 (2.8) Dia Typ .112 (6.2) Dia Typ .244 BRACKET LENGTH Single Pole Double Pole 1 C 2 NO 3 NC (4.5) Typ .177 (1.17) Typ .046 (1.17) Typ .046 (8.0) .315 (12.7) .500 (4.8) Typ .189 (4.8) Typ .189 (3.2) Typ .126 MB2411A2G13-FA Terminal Code: 13 15 17 Terminal Length: .250 (6.35mm) .425 (10.8mm) .964 (24.5mm) Bracket Length: .465 (11.8mm) .630 (16.0mm) 1.150 (29.2mm) (1.6) Typ .063 (7.9) Typ .311 (4.7) Typ .185 (1.8) Dia Typ .073 (1.5) Dia Typ .059 3 2 1 (1.6) Typ .063 (2.4) Typ .095 (7.9) Typ .311 (4.7) Typ .185 (1.8) Dia Typ .073 (1.5) Dia Typ .059 3 2 1 6 5 4 C L Straight PC * Reinforced Bracket (6.4) .253 (7.1) .280 (2.4) .096 (0.9) .035 TERMINAL LENGTH (0.5) Typ .020 (0.8) Typ .031 (4.7) Typ .185 (5.1) Dia Typ .201 (2.8) Dia Typ .112 (6.2) Dia Typ .244 BRACKET LENGTH 1 C 2 NO 3 NC Single Pole Double Pole (4.5) Typ .177 (1.27) Typ .050 (1.17) Typ .046 (4.8) Typ .189 (6.35) Typ .250 (4.8) Typ .189 (9.1) .358 (12.7) .500 MB2411A2G23-FA (19.05) .750 (3.18) Typ .125 Terminal Code: 23 25 26 Terminal Length: .250 (6.35mm) .425 (10.8mm) .750 (19.05mm) Bracket Length: .465 (11.8mm) .630 (16.0mm) .953 (24.2mm) (2.4) Typ .095 (3.18) Typ .125 3 2 (9.53) Typ .375 (4.7) Typ .185 (1.8) Dia Typ .073 (1.5) Dia Typ .059 (9.53) Typ .375 (4.7) Typ .185 (1.8) Dia Typ .073 (1.5) Dia Typ .059 3 2 1 6 5 4 1 C L NKK Switches * email: sales@nkkswitches.com * Phone (480) 991-0942 * Fax (480) 998-1435 * www.nkkswitches.com 03-07 Snap-Action Bracket PC Mount TYPICAL SWITCH DIMENSIONS Right Angle PC Keyway Series MB2400 Single Pole (2.84) Dia .112 (6.2) Dia .244 (5.1) Dia .201 (2.9) .114 (5.08) .200 (6.22) .245 (6.4) .253 (7.32) .288 (7.9) .311 (4.3) .169 (0.4) .016 (12.7) .500 (1.27) .050 (0.8) Typ .031 (4.7) Typ .185 COM NO NC 1 2 3 (4.7) Typ .185 3 2 1 (12.7) .500 (1.8) Dia Typ .073 (2.54) Typ .100 (1.4) Typ .055 (13.0) .512 (2.4) .096 MB2411A2G30-FA Right Angle PC Keyway Double Pole (2.84) Dia .112 (6.2) Dia .244 (5.1) Dia .201 (12.7) .500 (4.3) .169 (0.4) .016 (12.7) .500 (1.27) Typ .050 (3.8) .150 (0.8) Typ .031 (4.7) Typ .185 (4.7) Typ (3.81) .185 6 .150 3 5 2 4 1 COM NO NC 4 1 5 2 6 3 (12.7) .500 (1.8) Dia Typ .073 (2.54) Typ .100 (2.9) .114 (5.08) .200 (1.4) Typ .055 (13.0) .512 (2.4) .096 (6.4) .253 (6.2) .245 (7.32) .288 MB2461A2G30-FA Right Angle PCB Keyway Single Pole * Reverse Circuit (2.84) Dia .112 (6.2) Dia .244 (5.1) Dia .201 (4.6) .180 (6.2) .245 (2.4) .096 (8.9) .350 (0.4) .016 (9.3) .365 (2.7) .106 (0.8) .031 NC NO COM (8.5) .335 (3.96) Typ .156 (9.27) .365 (1.8) Dia Typ .073 (2.54) Typ .100 1 2 3 (7.9) .311 3 2 1 MB2411A2G32-FA (1.4) Typ .055 (5.08) .200 (6.4) .253 (13.0) .512 (1.4) Typ .055 (3.96) Typ .156 Vertical PC Keyway (2.84) Dia .112 (6.2) Dia .244 3 Single Pole NC NO COM 3 2 1 (3.81) Typ .150 2 1 (12.7) .500 (1.27) .050 (1.8) Dia Typ .073 (2.54) Typ .100 (5.1) Dia .201 (13.0) .512 (8.0) .315 (1.4) Typ .055 (5.08) .200 (2.4) .096 (6.2) .245 (6.4) .253 (7.32) .288 (0.4) .016 (12.7) .500 (2.7) .106 (0.8) Typ .031 (3.8) Typ .150 (2.4) Typ .094 NC NO COM 6 5 4 3 2 1 3 2 1 6 5 4 (3.81) Typ .150 Double Pole MB2411A2G40-FA (4.8) .189 (12.7) .500 (1.27) Typ .050 (12.7) .500 (1.8) Dia Typ .073 (2.54) Typ .100 NKK Switches * email: sales@nkkswitches.com * Phone (480) 991-0942 * Fax (480) 998-1435 * www.nkkswitches.com 03-07 Snap-Action Bracket PC Mount HARDWARE Standard Hardware AT513H Inch Threaded Hexagon Nut 2 included with each switch Material: Brass with Nickel Plating (9.0) .354 (1.5) .059 1/4-40 Thd (8.0) .315 Series MB2400 AT509 Lockwasher 1 included with each switch Material: Steel with Zinc/Chromate Optional Hardware (6.4) Dia (10.2) Dia .252 .402 (0.5) .020 AT507H Locking Ring for A1 or S1 Bushing (2.0) .079 (6.35) Dia .250 (12.0) Dia .472 AT515 Locking Ring for E1 Bushing Material: Steel with Zinc/Chromate (6.2) Dia .244 (5.5) .217 (12.0) Dia .472 Material: Steel with Zinc/Chromate (1.7) .067 (2.0) .079 (5.5) or .229 (0.8) .031 (1.68) .066 (0.8) .031 NKK Switches * email: sales@nkkswitches.com * Phone (480) 991-0942 * Fax (480) 998-1435 * www.nkkswitches.com 03-07 |
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