Series MB2400 Snap-Action Pushbuttons
General Specifications
Electrical Capacity (Resistive Load)
Power Level (silver): 3A @ 125V AC
Logic Level (gold): 0.4VA maximum @ 28V AC/DC maximum (Applicable Range 0.1mA ~ 0.1A @ 20mV ~ 28V)
Logic/Power Level: Combines silver & gold ratings
(gold over silver) Note: Find additional explanation of dual rating & operating range in Supplement section.
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Other Ratings
Contact Resistance: 20 milliohms maximum for silver; 30 milliohms maximum for gold
Insulation Resistance: 1,000 megohms minimum @ 500V DC
Dielectric Strength: 1,000V AC minimum between contacts for 1 minute minimum;
1,500V AC minimum between contacts & case for 1 minute minimum
Mechanical Life: 200,000 operations minimum
Electrical Life: 25,000 operations minimum for silver; 100,000 operations minimum for gold
Nominal Operating Force: Single pole 2.45N; double pole 3.92N
Travel Pretravel .024 (0.6mm); Overtravel .016 (0.4mm); Total Travel .039 (1.0mm)
Materials & Finishes
Plunger: Brass with nickel plating
Bushing: Brass with nickel plating
Frame: Stainless steel
Case: Polybutylene terephthalate (PBT) (UL94V-0)
Base: Diallyl phthalate resin (UL94V-0)
Movable Contactor: Phosphor bronze with silver or gold plating
Movable Contacts: Silver alloy (code W); copper with gold plating (code G); or silver alloy with gold plating (code A)
Stationary Contacts: Silver alloy with silver plating (code W); copper or brass with gold plating (code G); or
silver with gold plating (code A)
Terminals: Copper or brass with silver plating; copper or brass with gold plating
Environmental Data
Operating Temp Range: 30C through +85C (22F through +185F)
Humidity: 90 ~ 95% humidity for 96 hours @ 40C (104F)
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 6 right angled directions, with 3 shocks in each direction)
Installation
Mounting Torque: 1.5Nm (13.0 lbin) for double nut; 0.7Nm (6.0 lbin) for single nut
Cap Installation Force: 80.0N (18.0 lbf) maximum downward force on actuator
Soldering: Wave Soldering (PC version): See Profile B in Supplement section.
Manual Soldering: See Prolfi e B in Supplement section.
Cleaning: These devices are not process sealed. Hand clean locally using alcohol based solution.
See Cleaning Specifications in Supplement section.
Standards & Certifications
Flammability Standards: UL94V-0 case & base
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.
All single and double pole models recognized at 3A @ 125V AC or 0.4VA max. @ 28V DC max.
CSA: File No. 023535_0_000 - Certified only when ordered with marking on switch.
Add /C before dash in part number to order CSA certified 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.
C96 www.nkkswitches.com
Supplement Accessories Indicators Touch Tilt Tactiles Slides Rotaries Keylocks Programmable Illuminated PB Pushbuttons Rockers TogglesSnap-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.
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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.
Bushing Mount Page C98
Actual Size
Bracket PC Mount Page C102
Snap-in Mount Page C108
www.nkkswitches.com C97
Supplement Accessories Indicators Touch Tilt Tactiles Slides Rotaries Keylocks Programmable Illuminated PB Pushbuttons Rockers Toggles