Series FB & SB Momentary Pushbuttons
C38
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General Specifications
FB Series
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.
Other Ratings
Contact Resistance: 30 milliohms maximum for silver;
30 milliohms maximum for gold
Insulation Resistance: 100 megohms minimum @ 500V DC
Dielectric Strength: 1,000V AC minimum between contacts &
between contacts & case for 1 minute minimum
Mechanical Life: 50,000 operations minimum
Electrical Life: 50,000 operations minimum
Nominal Operating Force: 2.16N
Travel: Pretravel .043” (1.1mm)
Overtravel .022” (0.57mm)
Total Travel .065” (1.67mm)
Materials & Finishes
Plunger: Polyacetal
Bushing: Brass with nickel plating
Case: Phenolic resin
Movable Contactor: Copper with silver or gold plating
Stationary Contacts: Phosphor bronze with silver or gold plating
Terminals: Phosphor bronze 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 - Recognized only when
ordered with marking on switch.
Add “/U” or “/CUL” before dash in part
number to order UL recognized switch.
Models rated 0.5A @ 125V AC Single pole;
Momentary action circuit with solder lug
terminations.
CSA:
SB Series
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
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)
Black: Phenolic resin
Red: Urea formaldehyde 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
–10°C through +70°C (+14°F through +158°F)
Manual Soldering:
See Profile A in Supplement section.
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.
Models rated 3A @ 125V AC & 2A @ 250V AC.
Single pole: Momentary action circuit with solder lug
terminations.
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.
SB series rated 3A @ 125V AC & 2A @ 250V AC.
Single pole: Momentary action circuit with solder lug
terminations.
7/30/18