Series LB Standard Size Pushbuttons
General Specifications
Electrical Capacity (Resistive Load)
Power Level (silver): 3A @ 125V AC or 3A @ 250V AC or 3A @ 30V DC
Logic Level (gold): 0.4VA maximum @ 28V AC/DC maximum
(Applicable Range 0.1mA ~ 0.1A @ 20mV ~ 28V)
Note: Find additional explanation of operating range in Supplement section.
Other Ratings
Contact Resistance: 50 milliohms maximum for silver; 100 milliohms maximum for gold
D
Insulation Resistance: 200 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: 1,000,000 operations minimum for momentary circuit
200,000 operations minimum for maintained circuit
Electrical Life: 100,000 operations minimum
Nominal Operating Force: 4.41N
Contact Timing: Nonshorting (break-before-make)
Travel: Pretravel .059 (1.5mm); Overtravel .059 (1.5mm); Total Travel .118 (3.0mm)
Materials & Finishes
Housing: Glass fiber reinforced polyamide (UL94V-0)
Snap-in Frame: Stainless steel
Movable Contact: Silver alloy or copper with gold plating
Stationary Contacts: Silver alloy or copper with gold plating
Base: Liquid crystal polymer (UL94V-0)
Switch Terminals: Phosphor bronze with silver or gold plating
Lamp Terminals: Brass with silver plating
Environmental Data
Operating Temperature Range: 25C through +50C (13F through +122F) for Illuminated
25C through +70C (13F through +158F) for Nonilluminated
Note: When used with a polyvinyl chloride splash cover, the lowest limit is 0C (32F)
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 5 shocks in each direction)
Sealing: Not available for snap-in; see next section for panel seal.
Installation
Cap Installation Force: 3.92N maximum downward force on cap
Quick Connect Force: 52.95N maximum downward force on connector
Soldering Time & Temperature: Manual Soldering: See Profile A in Supplement section.
Standards & Certifications
Flammability Standards: UL94V-0 housing & base
UL: File No. E44145 - Recognized only when ordered with marking on switch.
Add /U or /CUL before rfi st dash in part number to order UL recognized switch.
All models recognized at 3A @ 125V or 250V AC or 0.4VA @ 28V AC/DC maximum.
CSA: File No. 023535_0_000 - Certified only when ordered with marking on switch.
Add /C before rfi st dash in part number to order CSA certified switch.
All models certified at 3A @ 125V or 250V AC or 0.4VA @ 28V AC/DC maximum.
D48 www.nkkswitches.com
Supplement Accessories Indicators Touch Tilt Tactiles Slides Rotaries Keylocks Programmable Illuminated PB Pushbuttons Rockers TogglesStandard Size Pushbuttons Series LB
Distinctive Characteristics
Carefully designed light diffusion and filtering system produces bright,
full surface illumination with front panel relamping.
Spot illumination available in single and bicolor LEDs.
Choice of super bright LEDs in white, green, and blue
in addition to standard or bright red, amber, and
green LEDs.
D
Stainless steel clips provide secure mounting with a
wide range of panel thicknesses.
Latchdown feature gives indication of circuit status.
Audible and tactile feedback with smooth and
responsive operation.
Snap-action contact mechanism gives long electrical
life and sensitivity of actuation.
Combination solder lug and .110 quick connect
terminals are epoxy sealed to prevent entry of flux,
dust, and other contaminants.
Panel sealed model meets IP65 of IEC60529 specifications
(similar to NEMA 4 & 13).
Compact switch design minimizes behind panel depth.
Matching indicators available.
Actual Size
Snap-in Mount Page D48
Panel Seal Page D59
www.nkkswitches.com D49
Supplement Accessories Indicators Touch Tilt Tactiles Slides Rotaries Keylocks Programmable Illuminated PB Pushbuttons Rockers Toggles