Butt Contact Pushbutton Switches
SERIES 39
SPST and SPDT, 1/4 Amp
FEATURES
• Fully Yrotected ꢂuring Flux
Cleaning Operations
DIMENSIONS In Inches (and millimeters)
SPDT–PC Mount
Large Button Style
.500 .015
(12,7 0,38)
39-261*
.187 .010 (ꢀ,75 0,25) ꢂID.
Rating at
28 Vdc
Resistive
Rating at
115 Vac
Resistive
Operations
at Rated
Load
Rating at
220 Vac
Resistive
Partial
Part
Number
39-251*
39-261*
.328 .015
(8,33 0,38)
150 mD
1/ꢀ Dmp
1/8 Dmp
500,000
.270 (6,86) REF.
Action
Total Travel
Actuating Force (oz.)
.125 .010 (3,18 0,25)
.030 .002 (0,76 0,05) ꢂID.
.068 .010 (1,73 0,25)
.100 .010 (2,5ꢀ 0,25)
.090 + .010/ – .015
(2,29 + 0,25/ – 0,38)
Momentary
10 3 oz.
.250 .015 (6,35 0,38)
.060 (1,52) REF.
.250 .010 (6,35 0,25) ꢂID.
.08ꢀ .005 (2,13 0,13) ꢂID.
Small Button Style
39-251*
.050 .005
(1,27 0,13)
.100 .015 (2,5ꢀ 0,38)
ENꢂ OF BUꢁꢁON HDS D .200 (5,08) SYHERICDL RDꢂIUS
.250 .010 (6,35 0,25) ꢂID.
.08ꢀ .005 (2,13 0,13) ꢂID.
.200 .015 (5,08 0,38)
.ꢀ00 .015
(10,16 0,38)
E
.060 (1,52) REF.
.100 .015 (2,5ꢀ 0,38)
.050 .005 (1,27 0,13)
.100 .010 (2,5ꢀ 0,25)
.100 .010 (2,5ꢀ 0,25)
.090
.010
(2,29
0,25)
.3ꢀ0 .015
(8,6ꢀ 0,38)
C
C
L
L
.ꢀ00 .015
.050 .005
(1,27 0,13) ꢁTY.
(10,16 0,38)
.300
.010
(7,62
0,25)
.100 .005 (2,5ꢀ 0,13)
.3ꢀ0 .015
.090
.010
(2,29
0,25)
.100 .010
(2,5ꢀ 0,25)
(8,6ꢀ 0,38)
.050 .005
(1,27 0,13) ꢁTY.
C
C
L
L
.100 .010
(2,5ꢀ 0,25)
.300
.010
(7,62
0,25)
N.C.
N.O.
XXXX
E.I.D. ꢂDꢁE
COꢂE
ORDERING INFORMATION
SPECIFICATIONS
Rating Criteria
Contact Resistance: 25 milliohms maximum on
a new switch
Voltage Breakdown: 1,000 Vac between
mutually insulated parts
Insulation Resistance: 1,000 megohms
minimum
CIRCUITRY
*Complete
2 Circuits Per Switch
Part Number
Description
Dctuator
N.C.
N.C.
39-251 RED
39-251 BLK
39-261 RED
39-261 BLK
Small Red Button, SYꢂꢁ
Small Black Button, SYꢂꢁ
Large Red Button, SYꢂꢁ
Large Black Button, SYꢂꢁ
SPST N.C.
SPST N.O.
N.O.
N.C.
N.O.
Operating Temperature: -ꢀ0°C to +125°C
Available from your local Grayhill Distributor.
For prices and discounts, contact a local Sales
Office,anauthorizedlocalꢂistributororGrayhill.
Materials and Finishes
Button: Nylon
Base and Cover: Yolyester, red in color
Shorting Bar: Yhosphor bronze, gold-plated
over nickel
Terminals: Brass, gold-plated over nickel
Spring: ꢁinned music wire
O-Ring: Fluorosilicone
Alternate Wiring
Dctuator
SPDT
BREAK BEFORE
MAKE
C
CONNECꢁ YINS
ON YC BODRꢂ
N.O.
Yushbutton
Grayhill, Inc.
•
561 Hillgrove Avenue
•
LaGrange, Illinois 60525-5997
•
USA
•
Phone: 708-354-1040
•
Fax: 708-354-2820
•
www.grayhill.com
37