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参数资料
| 型号： | E78-20A |
| 厂商： | THE CHERRY CORP |
| 元件分类： | 开关 |
| 英文描述： | SWITCH PUSH-PULL DPDT .1A QCTERM |
| 中文描述： | SNAP ACTING/LIMIT SWITCH, DPDT, LATCHED, 11.43mm, PANEL MOUNT |
| 文件页数： | 2/3页 |
| 文件大小： | 131K |
| 代理商： | E78-20A |
52
Specifications subject to change without notice.
0.315
dia.
A
Pulled out
- 00A
- 20A
- 30A
- 40A
- 50A
Auxiliary Buttons — Single Pole
–50A has button with special shaft to accept
auxiliary push buttons for manual actua-
tion. Consult factory for auxiliary buttons.
Circuitry — Single Pole
Double throw or single throw
versions available.
Single Pole Series:
E65, E68/F68, E69/F69
Terminals — Single Pole
This switch series has 0.187
″ x 0.020″
(4.75mm x 0.51mm) as standard for up
to 10 amps and 0.250
″ x 0.032″ (6.35mm
x 0.81mm) for 16 amps.
Consult factory for non-standard
terminal options.
International Versions —
Single Pole
For VDE applications, standard terminals
are 0.187
″ x 0.032″ (4.75mm x 0.81mm).
Switch prefix must be “F” for VDE
approved switches. Example: F68–30A
was E68–30A.
Ordering Information
Select the current rating you need.
Combine the corresponding Series/Prefix
number with the appropriate suffix number
for the switch type, circuitry and terminals
you require. Example: SPDT: E68–30A,
SPST NO: E68–31A, SPST NC: E68–32A.
0.97
(24.64)
0.34 (8.64) dia.
1.010 (25.65)
0.080 (2.03)
0.375
(9.53)
Reference
Line
Panel Cutout Detail
0.550
(13.97)
Cut out 1.115 (28.32) for
0.045 (1.14) thick panel
Cut out 1.125 (28.58) for
0.100 (2.54) thick panel
0.050
(1.27)
R max.
1.25 (31.75)
0.46 (11.68)
0.68
(17.27)
0.510 (12.95)
0.540 (13.72)
0.34
(8.64)
dia.
0.060
(1.52)
R
COM
NO
NC
0.865
(21.97)
0.145 (3.68)
0.615
(15.62)
0.940
(23.88)
0.099
(2.51)
80°
0.156
(3.96)
0.410 (10.41)
See Panel
Cutout Detail
0.875
(22.23
0.030
0.76)
+
-
+
-
Rest Position
0.770
(19.56
0.050
1.27)
+
-
+
-
Operating
Position
0.145
(3.683
0.020
0.51)
+
-
+
-
0.367
(9.32
0.020
0.51)
+
-
+
-
Dimensions — Single Pole inches (mm)
Button Detail — Single Pole
”A” dimension (full overtravel position)
Actuator Specifications — Single Pole
Maximum
Rest
Maximum
Operating
Minimum
Max. Movement Maximum Full Overtravel
Position
Pre-Travel
Point*
Over-Travel
Differential
Operating
Position
Actuator Switch
inches
Force**
inches
Type
(mm)
(g)
(mm)
Basic Momentary Action
–00A
0.845–0.905
0.125
0.720–0.820
0.375
0.045
425
0.400
(21.46–22.99)
(3.18)
(18.29–20.83) (9.53)
(1.14)
(10.16)
Push-Pull (Reset)
–20A
0.920–0.980
0.150
0.800–0.900
0.300
0.045
285
0.500
(22.37–24.89)
(3.81)
(20.32–22.86) (7.62)
(1.14)
(12.70)
Momentary
–30A
0.730–0.790
0.125
0.610–0.710
0.100
0.045
425
0.520
(18.54–20.07)
(3.18)
(15.49–18.03) (2.54)
(1.14)
(13.21)
“Cheat Interlock” (Pull out to lock)
0.730–0.790
0.125
0.800–0.900
0.050
0.060
385
0.980
(18.54–20.07)
(3.18)
(20.32–22.86) (1.27)
(1.52)
(24.89)
Short Button Momentary
–40A
0.420–0.480
0.125
0.300–0.400
0.175
0.045
425
0.125
(10.67–12.19)
(3.18)
(7.62–10.16)
(4.45)
(1.14)
(3.18)
For Auxiliary Push Button
–50A
0.420–0.480
0.125
0.300–0.400
0.175
0.045
425
0.125
(10.67–12.19)
(3.18)
(7.62–10.16)
(4.45)
(1.14)
(3.18)
*Measured above reference line. Refer to dimensional drawing above.
**Operating Forces listed above are for E68/E69 switches only. E65 Operating Force: 708 grams max. for momentary switches.
Dual function switch: Push in to operate in normal momentary mode and pull out for maintained action.
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