Grayhill Pushbutton switches: Butt Contact 39 Panel Mount Series - Manual (Page 2)

Grayhill, Inc. • 561 Hillgrove Avenue • LaGrange, Illinois 60525-5997 • USA • Phone: 708-354-1040 • Fax: 708-354-2820 • www.grayhill.com
Pushbutton Switches
Butt Contact Pushbutton Switches
diMenSiOnS in inches (and millimeters)
normally Closed–SPSt
39-2
39-2 Black
Operations
at rated
Load
rating at
220 Vac
resistive
Cap
Color
rating at
115 Vac
resistive
Part
number
1 / 4 Amp 1 / 8 Amp 250,000
Mtg.
Hole
total
travel
actuating
Force (oz.)
+ 4
– 2
action
Momentary 4
.042 ± .010 .172
(1,07 ± 0,25) (4,37) DIA.
normally Closed–SPSt with Sealed Bushing and Button
39-352*
39-352 RED Red
39-352 BLK Black
Operations
at rated
Load
rating at
220 Vac
resistive
Button
Color
rating at
115 Vac
resistive
1 / 4 Amp 1 / 8 Amp 100,000
*Complete
Part
number
actuating
Force (oz.)
total
travel
action
Momentary 8 ± 4
.042 ± .010
(0,17 ± 0,25)
CirCuitry
SPSt–n.O. WitH OVertraVeL
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
Operating temperature: -40°C to +85°C
Mounting torque: 2 inch-pounds
Materials and Finishes
Mounting nut: Brass, tin zinc
Housing: Aluminum, clear anodized for
39-351 and 39-352; Brass, zinc trivalent
chromate-plated for others
Button: Thermoset plastic
Base: Thermoset plastic
Shorting Bar: Fine silver for 39-2 and 39-352;
brass, gold-plated over nickel plate for 39-601;
fine silver, gold-plated for others
terminals: Fine silver for 39-2 and 39-352;
commercial bronze with gold-plated fine silver
contact surface for others
Spring: Tinned music wire
O-rings: (39-351 and 39-352) Internal ring is
silicone; external ring is buna ‘N’
accessory
Part number
description
30B1012-5 Red Button Cap
30B1012-9 Black Button Cap
30B1012-8 White Button Cap
Part number description
39-1 N.O., Red Button
39-2 N.C., Black Button
39-3 N.O., Black Button
39-12 N.O., Overtravel Red Button
39-24 N.O., Overtravel Black Button
39-351 red N.O., Sealed, Red Button
39-351 BLK N.O., Sealed, Black Button
39-352 red N.C., Sealed, Red Button
39-352 BLK N.C., Sealed, Black Button
39-601 red N.O., Economy, Red Button
39-601 BLK N.O., Economy, Black Button
OrderinG inFOrMatiOn
Accessory cap may be used with all switches
shown except 39-2.
aCCeSSOry
Button Cap
Part No. 30B1012
For use with part numbers
39-351 and 39-352.
(Fasten to button with
Cyanoacrylate Adhesive)
.105 – .005
(2,67 – 0,13) DIA.
.780 (19,81)
REF.
A
B
C
D
8-40 UNS-2A
THREAD
.250 +.010/ .005
(6,35 +0,25/ 0,13)
DIAMETER
A = .175 – .025 (4,45 –0,64)
B = .125 – . 010 (3,18 – 0,25)
C = .390 – .010 (9,91 – 0,25)
D = .100 (2,54) MAX.
H = HEX MTG NUT
.063 – .010 (1,60 – 0,25)
THICK
.219 – .010 (5,56 – 0,25)
ACROSS FLATS
H
E.I.A.
DATE
CODE
LABEL*
*Label increases
nominal diameter
to .255 (6,48)
.819
(20,80)
REF.
A
.312 –.005
(7,92 –0,13)
ACROSS
FLATS
D
E
C
B
A = .165 +.035/ .015
(4,19 +0,89/ 0,38)
B = .125 – .007
(3,18 – 0,18)
C = .429 –.015
(10,90 – 0,38)
D = .100 (2,54) MAX.
E = 10 TO 40
APPROX.
.110– .005 DIA.
(2,79 – 0,13)
#8-40 UNS-2A THREAD
.100 – .010 (2,54 – 0,25)
.060 – .010 (1,52 – 0,25)
.100 (2,54) MAX.
H = HEX MTG. NUT
.0625 (1,59) TYP.
THICK AND
.218 (5,56) TYP.
ACROSS FLATS
O-RING
.250 +.010/ .005
(6,35 + 0,25/ 0,13)
H
E.I.A.
DATE
CODE
LABEL*
*Label increases nominal diameter to .255 (6,48)
Button is o-ring
sealed internally.
SPSt n.O.
.060 ± .010
(1,52 ± 0,25)
.100 ±.010
(2,54 ± 0,25)
SPSt n.C.