Series FB & SB
General Specifications
FB Series
Momentary Pushbuttons
SB Series
C
Electrical Capacity (Resistive Load)
Power Level: 500mA @ 125V AC for silver
Logic Level: 0.4VA max. @ 28V AC/DC max. for gold
(Applicable Range 0.1mA ~ 0.1A @ 20mV ~ 28V)
Note: Find additional explanation in
Supplement section.
3A @ 125V AC or 2A @ 250V AC or
2A @ 30V DC for silver
0.4VA max. @ 28V AC/DC max. for gold
(Applicable Range 0.1mA ~ 0.1A @ 20mV ~ 28V)
Note: Find explanation of operating range in
Other Ratings
Contact Resistance:
Insulation Resistance:
Dielectric Strength:
Mechanical Life:
Electrical Life:
Nominal Operating Force:
Travel:
Materials & Finishes
Plunger:
Bushing:
Case:
Movable Contactor:
Stationary Contacts:
Terminals:
30 milliohms maximum for silver;
30 milliohms maximum for gold
100 megohms minimum @ 500V DC
1,000V AC minimum between contacts &
between contacts & case for 1 minute minimum
50,000 operations minimum
50,000 operations minimum
2.16N
Pretravel .043” (1.1mm)
Overtravel .022” (0.57mm)
Total Travel .065” (1.67mm)
Polyacetal
Brass with nickel plating
Phenolic resin
Copper with silver or gold plating
Phosphor bronze with silver or gold plating
Phosphor bronze with silver or gold plating
Supplement section.
10 milliohms maximum for silver;
20 milliohms maximum for gold
200 megohms minimum @ 500V DC
1,000V AC minimum between contacts
& between contacts & case for 1 minute minimum
30,000 operations minimum
10,000 operations minimum
4.90N
Normally Open
Total Travel .088” (2.24mm)
Normally Closed
Total Travel .088” (2.24mm)
Phenolic resin
Brass with nickel plating
Phenolic resin
Copper with silver or gold plating
Copper with silver or gold plating
Copper with silver or gold plating
Environmental & Installation Data
Operating Temp Range: –10°C through +70°C (+14°F through +158°F)
Soldering Time & Manual Soldering:
Temperature: See Profile A in Supplement section.
Standards & Certifications
UL: File No. E44145
Models rated 0.5A @ 125V AC Single pole;
Momentary action circuit with solder lug
terminations.
Add “/U” to end of part number to order UL
mark on switch.
Add “/CUL” to end of part number to order
cULus mark on switch.
CSA:
–10°C through +70°C (+14°F through +158°F)
Manual Soldering:
See Profile A in Supplement section.
File No. E44145
Models rated 3A @ 125V AC & 2A @ 250V AC.
Single pole: Momentary action circuit with solder lug
terminations.
Add “/U” to end of part number to order UL mark on
switch.
Add “/CUL” to end of part number to order cULus
mark on switch.
File Number: 023535_0_000
SB series rated 3A @ 125V AC & 2A @ 250V AC.
Single pole: Momentary action circuit with solder lug
terminations.
Add “/C” to end of part number to order CSA mark on
switch.
C38
www.nkk.com
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