MINIATURE SWITCHES
Standard Ordering Table – Pushbutton Switches – Panelmount Maintained
and Momentary Action (SPDT)
HOW TO ORDER YOUR DESIGN
(Bold Face Type indicates items normally in Distributor Stock)
Following the table from left to right, the designer is able to specify
the options wanted. The options are described and illustrated on
pages 15-16.
Pushbutton
Switch Series
Circuit
Cap
Size
Cap
Color
To determine a part number select the options desired and fill in
the boxes in the selection guides illustrated below.
Pushbutton Switch Selection Guide
Terminal
Type
Contact
Material
Other
+
Base P/N
PB
Circuit
-123
—
ON-NONE-ON
Push to make
contact and Push
again to reverse
action
-126
—
ON-NONE-ON
*
Normally Open or
Normally Closed.
(For NC circuit
use Terminal 2 &
1, for NO. 2 & 3,
for NC and NO. 1,
2 & 3)
+
Cap Size
0
— No Cap
1
— .200 Dia.
2
— .310 Dia.
3
— 375 Dia.
+
+
+
+
Suffix Numbers & Letters — Add to Base Catalog Number
Cap Color
0
— No Cap
1
— Black
2
— White
3
— Red
Terminal Options
Z
— Solder Lugs
C
— Printed Circuit
Z3
— Quick Connect
W
— .750” Wirewrap
W1
— .964” Wirewrap
W3
— .425” Wirewrap
W4
— 1.0625” Wirewrap
A
— Right Angle P.C.
AV
— Vertical P.C.
.100 Spacing
AV2
— Vertical P.C.
.150 Spacing
Contact Material-Type
B
— Gold/Nickel/
Brass
G
— Gold/Nickel/
Silver
Q
— Coin Silver
K
—
L
—
M
—
Other Options
Epoxy Sealed
Terminals
PBS
Plunger Seal
PBW
Plunger & Panel
Seal
*
Momentary Contact
EXAMPLES:
PB-12331ZQ
Ratings are 0.4 VA-28 VAC or DC.
Epoxy seal standard on all terminal options.
Same as B, G and Q respectively except terminals brass with tin nickel alloy over
nickel plate. Consult factory for availability
= Maintained (Push-Push) circuit, .375” Black Cap, Solder Lug Terminals, Silver Contacts, 6 Amp Rating and Epoxy Sealed
Terminals
PBW-12613CB = Plunger & Panel Seal, Momentary circuit, .200” Red Cap epoxy sealed Printed Circuit Terminals and 50 Millionths Gold
over Brass contacts.
APPROXIMATE DIMENSIONS
PB
w /.375
CAP
MAINTAINED ACTION
PBS
w /.310
CAP
PBW
w /.200
CAP
MOMENTARY ACTION
SPECIFICATIONS
Contact Rating
– Letter codes G and Q – 6 amp at 125 VAC, 3 amp
at 250 VAC (
U.L. recognized, CSA certified
) or 6 amp at 28 VDC resistive.
Letter codes B and G – 0.5. volt-amp (VA) maximum @ 28 V
maximum (AC or DC).
Life Under Load (Resistive)
Alternate Action Suffix – 123; 100,000 make-and break cycles
Momentary Action Suffix – 126; 60,000 make-and-break cycles
Initial Contact Resistance
– 10 milliohms max. 3 VDC, 100 ma for
both silver and gold plated contacts.
Insulation Resistance
– 1,000 MBG.
Dielectric Strength
– 1,000 volts rms at sea level.
Bushing Strength
– 12 pound-inches without physical damage to
switch.
-126
-123
Operating Force
Pretravel
Overtravel
1.5 lb.
1.75 lb.
.043 Max. .106 Max.
.009 Min. .008 Min.
MATERIALS
Base (body)
— Diallyl Phthalate.
Bushing
— Brass, nickel plated.
Clamp (frame)
— Stainless steel.
Switching Contacts and Rockers
Letter Code B — gold/nickel/brass
Letter Code G — gold/nickel/silver
Letter Code Q — Coin silver
Center Terminal
Letter Codes B, G — Gold flash/nickel/brass
Letter Code Q — Silver plated brass.
Hardware
PB and PBS Series
(2) W-NU-11 hex nuts
(1) W-WA-16 internal tooth lockwasher
PBW Series
(1) W-NU-11 hex nut
(1) W-WA-16 internal tooth lockwasher
(1) W-WA-44 neoprene panel seal
Litho in U.S.A GG
14
MINIATURE SWITCHES
Pushbutton Switches — Panelmount Maintained and Momentary Action (SPDT)
Termination Options
C Printed Circuit
W Wire-Wrap
W1 Wire-Wrap
W3 Wire-Wrap
W4 Wire-Wrap
Z Standard
Z3 Quick Connect
Mating Receptacle from
AMP SPECIAL IND., P.O.
Box 984, Paoli, Pa. 19301
Amp P/N single piece 61454
series, strip from 60900
NOTE: Wire-Wrap is a registered trademark of the Gardner-Denver Company.
APPROXIMATE DIMENSIONS
PB, PBS, PBW SWITCHES w/”A” TYPE RIGHT ANGLE P.C. TERMINALS
DIM.
“A”
“B”
PB-123
.561
.108
PB-126
.514
.098
P.C. Mounting
EPOXY SEALED P.C. TERMINALS ARE SUPPLIED AS STANDARD FOR THESE OPTIONS
PB, PBS, PBW SWITCHES w/ “AV” (.100” TERMINAL SPACING) OR “AV2” (.150” TERMINAL SPACING)
TYPE VERTICAL P.C. TERMINALS
AV2
DIM.
“A”
“B”
PB-123
.561
.108
PB-126
.514
.098
AV
P.C. Mounting
EPOXY SEALED P.C. TERMINALS ARE SUPPLIED AS STANDARD FOR THESE OPTIONS
Litho in U.S.A GG
15
MINIATURE SWITCHES
Pushbutton Switches — Panelmount Maintained and Momentary Action (SPDT)
PUSHBUTTON CAP STYLES FOR PB SERIES SWITCHES ON PAGE 14
PART NUMBER
W-KN-12
W-KN-12A
W-KN-12B
W-KN-12C
W-KN-12D
W-KN-12E
W-KN-12F
W-KN-12G
COLOR
BLACK
WHITE
RED
GREEN
BLUE
DK. GRAY
YELLOW
LT. GRAY
PART NUMBER
W-KN-31
W-KN-31A
W-KN-31B
W-KN-31C
W-KN-31D
W-KN-31E
W-KN-31F
W-KN-31G
COLOR
BLACK
WHITE
RED
GREEN
BLUE
DK. GRAY
YELLOW
LT. GRAY
PART NUMBER
W-KN-14
W-KN-14A
W-KN-14B
W-KN-14C
W-KN-14D
W-KN-14E
W-KN-14F
W-KN-14G
COLOR
BLACK
WHITE
RED
GREEN
BLUE
DK. GRAY
YELLOW
LT. GRAY
Black, white, red are standard. Contact Electroswitch for availability on other colors shown.
DECORATIVE FACENUTS FOR PB SERIES AND PS SERIES
PART NUMBER W-NU-29A
PART NUMBER W-NU-30A
(For .310 Dia. Caps)
(For .375 Dia. Caps)
Part No. W-NU-29A
Assembled to PB
Series Switch.
Part No. W-NU-30A
Assembled to PS
Series Switch.
(See page 4)
Finish: Bright chrome plate over brass
Finish: Bright chrome plate over brass
16
Litho in U.S.A GG
