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| Snap-Action Pushbuttons www..com 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 www..com 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 Bushing Mount www..com Series MB2400 F CAPS F H .201" (5.1mm) Diameter .295" (7.5mm) Diameter TYPICAL SWITCH ORDERING EXAMPLE MB24 POLES & CIRCUITS 11 61 SPDT DPDT ON ON 11 E1 W 01 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 A BUSHINGS E1 E2 A1 A2 S1 S2 .285" (7.24mm) Threaded with D Flat .285" (7.24mm) Smooth with D Flat .280" (7.1mm) Threaded with Keyway .280" (7.1mm) Smooth with Keyway .350" (8.9mm) Threaded with Keyway .350" (8.9mm) Smooth with Keyway 01 03 05 06 07 CAP COLORS A B C Black White Red TERMINALS Solder Lug .250" (6.35mm) Straight PC .425" (10.8mm) Wirewrap .750" (19.05mm) Wirewrap .964" (24.5mm) Wirewrap 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 MB2411E1W01-FA Black .201" (5.1mm) Diameter Cap .285" (7.24mm) Threaded Bushing with D Flat SPDT ON-(ON) Circuit Silver Contacts with 3-Amp Rating Solder Lug Terminals NKK Switches * email: sales@nkkswitches.com * Phone (480) 991-0942 * Fax (480) 998-1435 * www.nkkswitches.com 03-07 Snap-Action Bushing Mount www..com Series MB2400 Throw & Switch Schematics Note: Terminal numbers are not actually on the switch. 1 (COM) POLES & CIRCUITS Plunger Position ( ) = Momentary Normal Down Keyway Connected Terminals Normal Keyway Down Pole SP Model MB2411 ON (ON) 1-3 1-2 SPDT 3 1 (COM) 3 2 6 2 4 5 DP MB2461 ON (ON) 1-3 4-6 1-2 4-5 DPDT BUSHINGS Note: Plunger selection is not required for MB2400 pushbuttons. The plunger can be used with or without a cap. E1 .285" (7.24mm) Threaded with D Flat A1 .280" (7.1mm) Threaded with Keyway (0.8) .031 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 (8.0) Dia .315 (2.5) .098 (0.9) .035 1/4-40 Thd (2.84) Dia .112 (2.5) .098 (5.54) (7.1) .218 .280 1/4-40 Thd (2.84) Dia .112 (2.5) .098 (5.54) .218 (8.9) .350 (0.9) .035 (8.0) Dia .315 (5.54) (7.24) .218 .285 Maximum Panel Thickness with Standard Hardware: .068" (1.74mm) .285" (7.24mm) Smooth with D Flat Maximum Panel Thickness with Standard Hardware: .068" (1.74mm) .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 Maximum Panel Thickness with Standard Hardware: .134" (3.40mm) .350" (8.9mm) Smooth with Keyway E2 A2 S2 (0.8) .031 (8.0) Dia .315 (6.2) Dia .244 (2.84) Dia .112 (8.0) Dia .315 (2.5) .098 (0.9) .035 (0.8) .031 (8.0) Dia .315 (6.2) Dia .244 (2.84) Dia .112 (2.5) .098 (5.54) .218 (8.9) .350 (0.9) .035 (5.54) (7.24) .218 .285 Panel Cutouts 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 Standard hardware includes 2 hex nuts & 1 lockwasher. Hardware is illustrated following the Typical Switch Dimension drawings. (6.5) Dia .256 (2.2) Dia .087 (6.5) .256 NKK Switches * email: sales@nkkswitches.com * Phone (480) 991-0942 * Fax (480) 998-1435 * www.nkkswitches.com 03-07 Snap-Action Bushing Mount www..com Series MB2400 CONTACT MATERIALS & RATINGS Power Level 3A @ 125V AC W G Silver over Silver 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 01 Solder Lug 03 .250" (6.35mm) Straight PC 05 06 07 .425" (10.8mm) Wirewrap or Extended PC .750" (19.05mm) Wirewrap or Extended PC .964" (24.5mm) Wirewrap or Extended PC Epoxy Seal (2.0) .079 (4.0) .157 Epoxy Seal (6.35) (4.8) .250 .189 (2.0) (1.1) .079 .043 Thk = (0.8) .031 (1.17) .046 Thk = (0.8) .031 3 2 1 3 (4.8) .189 6 5 4 (4.7) Typ .185 (1.8) Dia Typ .073 2 1 (4.7) Typ .185 Refer to the footprints if using as extended PC terminal. Dimension A = terminal lengths as shown beside the code boxes above. Epoxy Seal A (1.27) .050 Thk = (0.8) .031 (1.8) Dia Typ .073 Single Pole Double Pole CAPS & CAP COLORS F AT475 .201" (5.1mm) Diameter Cap H (5.1) Dia .201 (6.4) .253 (4.0) .157 AT496 .295" (7.5mm) Diameter Cap (7.5) Dia .295 (6.4) .253 (4.0) .157 Material: Polyamide Finish: Glossy Material: Polyamide Finish: Glossy Cap Colors Available: A Black B White C Red NKK Switches * email: sales@nkkswitches.com * Phone (480) 991-0942 * Fax (480) 998-1435 * www.nkkswitches.com 03-07 Snap-Action Bushing Mount www..com Series MB2400 TYPICAL SWITCH DIMENSIONS Single Pole (1.1) x (2.0) Typ .043 x .079 (0.8) Typ .031 (4.7) Typ .185 1/4-40 Thd (6.4) .253 (7.24) .285 (0.9) (4.5) .035 .177 (14.0) .552 (4.0) .157 (7.9) .311 Solder Lug Flat (5.1) Dia .201 (2.84) Dia .112 (2.4) .096 NC NO COM 3 2 1 (13.0) .512 (2.0) .079 MB2411E1W01-FA Solder Lug Double Pole (1.1) x (2.0) Typ .043 x .079 (0.8) Typ .031 (4.7) Typ .185 1/40-40 Thd (6.4) .253 (7.24) .285 (0.9) (4.5) .035 .177 (14.0) .552 (4.0) .157 Flat (5.1) Dia .201 (2.84) Dia .112 (2.4) .096 NC NO COM 6 5 4 3 2 1 (13.0) .512 (4.8) .189 (12.7) .500 (2.0) Typ .079 MB2461E1W01-FA 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 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 Material: Steel with Zinc/Chromate (6.35) Dia .250 (2.0) .079 (5.5) or .229 (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 (2.0) .079 (1.7) .067 (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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