Series FB & SB
Toggles
Momentary Pushbuttons
General
Specifications
FB Series
Electrical Capacity (Resistive Load)
Power Level:
Logic Level:
500mA @ 125V AC for silver
0.4VA max. @ 28V AC/DC max. for gold
(Applicable Range 0.1mA ~ 0.1A @ 20mV ~ 28V)
Note: Find additional explanation in
Supplement section.
Rockers
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)
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
Pushbuttons
Programmable Illuminated PB
C
Other Ratings
Contact Resistance:
Insulation Resistance:
Dielectric Strength:
Mechanical Life:
Electrical Life:
Nominal Operating Force:
Travel:
Rotaries
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)
Keylocks
Materials & Finishes
Tactiles
Plunger:
Bushing:
Case:
Movable Contactor:
Stationary Contacts:
Terminals:
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
Slides
Environmental & Installation Data
Operating Temp Range:
Soldering Time &
Temperature:
Tilt
–10°C through +70°C (+14°F through +158°F)
Manual Soldering:
See Profile A in Supplement section.
–10°C through +70°C (+14°F through +158°F)
Manual Soldering:
See Profile A in Supplement section.
Standards & Certifications
UL:
Touch
Indicators
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.
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.
CSA:
Supplement
Accessories
C38
www.nkk.com
Momentary Pushbuttons
Series FB & SB
Toggles
Distinctive
Characteristics
Optional caps in different colors to vary appearance
as needed.
Low operating force for ease of actuation.
Rear panel bushing mount with compact
behind panel dimension.
Internal antijamming feature to protect the
contacts from damage due to excessive
force on the plunger.
Self-cleaning contacts make FB models highly
reliable.
Low cost device of rugged one-piece bushing
and housing construction.
Reliability of construction with an internal guide to
maintain contact alignment.
Epoxy sealed terminals.
C
SB Bushing Mount
Page C42
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C39
Supplement
Accessories
Indicators
FB Bushing Mount
Page C40
Touch
Actual Size FB
Actual Size SB
Tilt
Tactiles
Slides
Rotaries
Keylocks
Programmable Illuminated PB
Pushbuttons
Rockers
Series FB
Toggles
.5 Amp Momentary Pushbuttons
TYPICAL SWITCH ORDERING EXAMPLE
Pushbuttons
Rockers
FB
C
15AN
EP
2
F
A
Programmable Illuminated PB
Pole & Circuit
15AN
SPST OFF
(ON)
( ) = Momentary
2
4
Contact Materials & Ratings
Silver Contacts
500mA @ 125V AC
Gold Contacts
0.4VA max. @ 28V AC/DC max.
Cap Colors
A
B
C
Black
White
Red
Keylocks
IMPORTANT:
Terminals
EP
P
Epoxy Sealed PC/Turret
No Epoxy PC/Turret
Switches are supplied without UL &
cULus marking unless specified.
UL & cULus recognized only when
ordered with marking on the switch.
Specific models, ratings, & ordering in-
structions are noted on General Specifi-
cations page.
Caps
F
H
.201” (5.1mm) Dia.
.295” (7.5mm) Dia.
Slides
Rotaries
DESCRIPTION FOR TYPICAL ORDERING EXAMPLE
FB15ANEP2-FA
Tactiles
.201” (5.1mm) Diameter
Black Cap
Silver Contacts &
500-Milliamp Rating
SPST
OFF-(ON) Circuit
Epoxy Sealed
PC/Turret Terminals
Touch
Tilt
POLE & CIRCUIT
Indicators
Plunger Position
( ) = Momentary
Normal
Down
Connected Terminals
Normal
Down
Throw & Switch Schematics
Note: Terminal numbers are
not actually on the switch.
Accessories
Pole
Model
Supplement
SP
FB15AN
OFF
(ON)
OPEN
1-2
SPST
1
2
C40
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Series SB
Toggles
3 Amp Momentary Pushbuttons
TYPICAL SWITCH ORDERING EXAMPLE
Pushbuttons
Rockers
SB40
C
Pole & Circuits
Normally Open
11NO
11NC
SPST
SPST
OFF
ON
11NO
M
Plunger Colors
Contact Materials & Ratings
No
Code
G
Silver Contacts
3A @ 125V AC or 2A @ 250V DC
Gold Contacts
0.4VA max. @ 28V AC/DC max.
Programmable Illuminated PB
No Code
(ON)
(OFF)
C
Black
Red
Normally Closed
( ) = Momentary
Bushings
M
Metric Threaded M12 P1
Inch Threaded 15/32-32 NS
H
Slip-On Cap & Colors
No Code
2A
2B
2C
2E
2F
2G
Without Cap
Black
White
Red
Yellow
Green
Blue
Keylocks
IMPORTANT:
Switches are supplied without UL,
cULus & CSA marking unless specified.
UL, cULus & CSA recognized only when
ordered with marking on the switch.
Specific models, ratings, & ordering in-
structions are noted on General Specifi-
cations page.
Rotaries
Slides
DESCRIPTION FOR TYPICAL ORDERING EXAMPLE
Tactiles
SB4011NOM
Standard Black Plunger
without Slip-on Cap
SPST OFF-(ON)
Normally Open Circuit
Metric Threaded Bushing
Tilt
Silver Contacts with
3-Amp Rating
Touch
POLE & CIRCUITS
Indicators
Plunger Position
( ) = Momentary
Normal
Pole
Model
Down
Connected Terminals
Normal
Down
Throw & Switch Schematics
Note: Terminal numbers are
not actually on the switch.
Accessories
Supplement
SP
SB4011NO
SB4011NC
OFF
ON
(ON)
(OFF)
OPEN
1-2
1-2
OPEN
SPST
NO
1
2
NC
1
2
C42
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