Series - 8570, 8571, 8572
FEATURES
• Environmentally sealed
• 1, 2 and 4 pole circuitry
• 2 & 3 position with maintained and
momentary action
• Integrated Wire Termination System
(IWTS) for ease of wiring
• Terminal numbers molded into
silicone base seal
MILITARY - ENVIRONMENTALLY SEALED SWITCHES
MIL-S-3950 IWTS Switches
CURRENT RATINGS
CURRENT RATINGS FOR -20
No. of
Poles
Catalog
Number
T of
ype
Operation
Lamp
Load
1
8570
Maintained
Momentary
2
8571
Maintained
Momentary
115VAC
60 or 400Hz
4
8572
Maintained
Momentary
Inductive
Load
10
7
15
8
15
8
5
4
7
.5
5
5
4
28VDC
Resistive
Load
7
.5
7
.5
7
.5
7
.5
7
.5
7
.5
Inductive
Load
7
.5
7
.5
7
.5
7
.5
7
.5
7
.5
Lamp
Load
3
2
4
2
4
2
115VAC
60 or 400Hz
Resistive
Load
7
.5
7
.5
7
.5
7
.5
7
.5
7
.5
Inductive
Load
7
.5
7
7
.5
7
.5
7
.5
7
.5
SPECIFICATIONS
• Environmentally sealed per MIL
-S-3950
• MS approved and QPL'd per MIL
-S-3950
• Thermoset molding materials meet
flame retardant requirements
• Bushing: 15/32" - 32 thread
• Temperature Range: -85°F to +160°F
(-65°C to +71°C)
• Accepts MIL
-C-39029/1-101 pin
• Life: 20,000 operations at rated load
40,000 operations mechanical life
CURRENT RATINGS
CURRENT RATINGS FOR -16
No. of
Poles
Catalog
Number
T of
ype
Operation
Lamp
Load
1
8570
Maintained
Momentary
2
8571
Maintained
Momentary
4
8572
Maintained
Momentary
5
4
7
5
5
4
28VDC
Resistive
Load
20
15
20
18
20
18
Inductive
Load
15
10
15
10
12
10
Lamp
Load
3
2
4
2
4
2
Resistive
Load
15
15
15
11
15
11
STANDARD LEVER SELECTION TABLE
— Terminals Accept Wire Contact Within Dimensional Limits of M39029/1-102 for -16 wire size.
— Terminals Accept Wire Contact Within Dimensional Limits of M39029/1-101 for -20 wire size.
8570
CIRCUIT WITH LEVER IN . . .
Up
Position
Center
Position
Down Position
(Keyway)
MS Part
Number
ON
ON
ON
ON
ON
ON
*
ON
NONE
ON
OFF
ON
*
ON
ON
ON
ON
*
ON
ON
ON
ON
ON
ON
ON
*
ON
NONE
ON
OFF
ON
*
ON
ON
ON
ON
*
ON
OFF
NONE
NONE
OFF
OFF
*
NONE
OFF
OFF
NONE
NONE
OFF
ON
ON
ON
ON
ON
OFF
NONE
NONE
OFF
OFF
*
NONE
OFF
OFF
NONE
NONE
OFF
ON
ON
ON
ON
ON
ON
OFF
ON
NONE
NONE
ON
*
ON
*
ON
*
OFF
*
ON
*
ON
*
NONE
NONE
ON
ON
*
ON
*
ON
OFF
ON
NONE
NONE
ON
*
ON
*
ON
*
OFF
*
ON
*
ON
*
NONE
NONE
ON
ON
*
ON
*
MS27722-21
-22
-23
-24
-25
MS27722-26
-27
-28
-29
-30
MS27722-31
-32
-33
—
—
—
MS27784-21
-22
-23
-24
-25
MS27784-26
-27
-28
-29
-30
MS27784-31
-32
-33
—
—
—
Catalog
Number
8570K1-16
K9-16
K4-16
K6-16
K8-16
8570K5-16
K2-16
K7-16
K10-16
K11-16
8570K3-16
K12-16
K13-16
—
—
—
8570K1-20
K9-20
K4-20
K6-20
K8-20
8570K5-20
K2-20
K7-20
K10-20
K11-20
8570K3-20
K12-20
K13-20
—
—
—
MS Part
Number
MS27723-21
-22
-23
-24
-25
MS27723-26
-27
-28
-29
-30
MS27723-31
-32
-33
MS27723-1
-2
-3
MS27785-21
-22
-23
-24
-25
MS27785-26
-27
-28
-29
-30
MS27785-31
-32
-33
MS27785-1
-2
-3
8571
TWO POLE
FOUR POLE
8572
ONE POLE
Catalog
Number
8571K1-16
K9-16
K4-16
K6-16
K8-16
8571K5-16
K2-16
K7-16
K10-16
K11-16
8571K3-16
K12-16
K13-16
8571K17-16
K18-16
K19-16
8571K1-20
K9-20
K4-20
K6-20
K8-20
8571K5-20
K2-20
K7-20
K10-20
K11-20
8571K3-20
K12-20
K13-20
8571K17-20
K18-20
K19-20
MS Part
Number
MS27724-21
-22
-23
-24
-25
MS27724-26
-27
-28
-29
-30
MS27724-31
-32
-33
MS27724-1
-2
-3
MS27786-21
-22
-23
-24
-25
MS27786-26
-27
-28
-29
-30
MS27786-31
-32
-33
MS27786-1
-2
-3
Catalog
Number
8572K1-16
K9-16
K4-16
K6-16
K8-16
8572K5-16
K2-16
K7-16
K10-16
K11-16
8572K3-16
K12-16
K13-16
8572K15-16
K16-16
K17-16
8572K1-20
K9-20
K4-20
K6-20
K8-20
8572K5-20
K2-20
K7-20
K10-20
K11-20
8572K3-20
K12-20
K13-20
8572K15-20
K16-20
K17-20
* Momentary contact.
See page A71 for circuit diagrams.
EATON CORPORATION Aerospace
TF300-5D July 2009
A27
MILITARY - ENVIRONMENTALLY SEALED SWITCHES
Series - 8570, 8571, 8572
MOUNTING DIMENSIONS - ONE POLE / 8570
.432
[10,97]
.076
[1,93]
MIL-S-3950 IWTS Toggles
KEYW
.240
DIA.
[6,10]
33°
16.5°
15/32-32 UN-2A
THREAD TO WITHIN
.060 [1,52] OF SHOULDER
1.55
[39,4]
1
2
.38
.38
[9,6] [9,6]
1.25
[31,7]
Terminal Identification
MOUNTING DIMENSIONS - TWO POLE / 8571
.432
[10,97]
.076
[7,93]
KEYW
.240
DIA.
[6,10]
33
16.5
15/32-32 UN-2A
THREAD TO WITHIN
.060 [1,52] OF SHOULDER
1.60
[40 6]
4
5
6
.100
[25,40]
1
2
3
.594
[15,09]
.100
[25,40]
.47
[11,9]
.69
[17,5]
STANDARD
0.00 = inches
[0,0] = mm
Mounting dimensions for reference only.
.38 .38
[9,7] [9,7]
1.32
[33,5]
Terminal Identification
Non-functional terminals not supplied.
A28
EATON CORPORATION Aerospace
TF300-5D July 2009
3
.89
[22 6]
.38
[9,7]
.47
.69
Series - 8570, 8571, 8572
MILITARY - ENVIRONMENTALLY SEALED SWITCHES
MIL-S-3950 IWTS Toggles
.432
[10,97]
MOUNTING DIMENSIONS - FOUR POLE/ 8572
KEYWAY
.240
DIA.
[6,10]
33
16.5
.69
[1,7]
.076
[1,93]
15/32-32 UN-2A
THREAD TO WITHIN
.060 [1,52] OF SHOULDER
1.60
[40,6]
10
11
12
7
8
9
.37
[9,4]
4
5
6
1
.100
[25,40]
.38
.38
[9,7] [9,7]
1.32
[33,5]
Terminal Identification
Non-functional terminals not supplied.
OPTIONS/ACCESSORIES
•
•
•
•
•
•
•
Special mounting hardware
Mounting hardware furnished assembled
Special circuits
Panel seal, part number 32-341 (See Accessories and
Custom Components section)
Special "3 Cateye" luminous lever attachment
Lever extensions and attachable tips (See Accessories
and Custom Components section)
Custom wiring harnesses
PANEL CUTOUT DIMENSIONS
15/32 DIA. BUSHING
0.480
DIA. HOLE
[12,19]
2
3
.37
[9,4]
LOCKING RING
KEYWAY
STANDARD
0.00 = inches
[0,0] = mm
Mounting dimensions for reference only.
EATON CORPORATION Aerospace
TF300-5D July 2009
0.445
[11,30]
0.062
[1,57]
0.480
DIA. HOLE
[12,19]
0.375
[9,52]
0.130
[3,30]
1.64
[41,6]
.37
[9,4]
.47
[11,9]
A29
单片机
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