Series - 8503, 8504, 8505
FEATURES
• Environmentally sealed
• 1, 2 and 4 pole circuitry
• 2 & 3 position with
maintained and momentary action
• Locking actuator for safety
• Molded-in terminal inserts and
terminal numbers
MILITARY - ENVIRONMENTALLY SEALED SWITCHES
MIL-S-3950 Lever Lock Switches
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)
• Life: 20,000 operations at rated load
40,000 operations mechanical life
No. of
Poles
Catalog
Number
CURRENT RATINGS
28VDC
Lamp
Resistive Inductive
Load
Load
Load
1
8503
Maintained
5
20
15
Momentary
4
15
10
2
8504
Maintained
7
20
15
Momentary
5
18
10
4
8505
Maintained
5
20
12
Momentary
4
18
10
Minimum Rating: "Intermediate Current" per MIL-S-3950.
Type of
Operation
115 VAC
60 or 400Hz
Lamp
Resistive Inductive
Load
Load
Load
3
15
10
2
15
7
4
15
15
2
11
8
4
15
15
2
11
8
LEVER LOCK SELECTION TABLE
8503
CIRCUIT WITH LEVER IN . . .
Up
Position
Center
Position
Down Position
(Keyway)
Lever
Lock
Bushing
Style
A
B
D
E
F
G
H
J
K
L
M
N
P
D
F
G
D
F
G
E
F
K
M
F
F
E
L
N
E
F
F
E
F
K
L
8504
TWO POLE
Flush Screw Terminals
MS Part
Number
MS24659-21A
-21B
-21D
-21E
-21F
MS24659-21G
-21H
-21J
-21K
-21L
MS24659-21M
-21N
-21P
-22D
-22F
MS24659-22G
-23D
-23F
-23G
-24E
MS24659-24F
-24K
-24M
-25F
-26F
MS24659-27E
-27L
-27N
-28E
-29F
MS24659-30F
-31E
-31F
-31K
-31L
Catalog
Number
8504K1
K27
K5
K2
K28
8504K3
K29
K30
K31
K32
8504K33
K4
K34
K10
K35
8504K9
K6
K36
K7
K16
8504K37
K38
K11
K22
K20
8504K12
K39
K14
K15
K21
8504K19
K18
K40
K41
K13
8505
FOUR POLE
Flush Screw Terminals
MS Part
Number
MS24660-21A
-21B
-21D
-21E
-21F
MS24660-21G
-21H
-21J
-21K
-21L
MS24660-21M
-21N
-21P
-22D
-22F
MS24660-22G
-23D
-23F
-23G
-24E
MS24660-24F
-24K
-24M
-25F
-26F
MS24660-27E
-27L
-27N
-28E
-29F
MS24660-30F
-31E
-31F
-31K
-31L
Catalog
Number
8505K1
K27
K5
K2
K28
8505K3
K29
K30
K31
K32
8505K33
K4
K34
K10
K35
8505K9
K6
K36
K7
K16
8505K37
K38
K11
K22
K20
8505K12
K39
K14
K15
K21
8505K19
K18
K40
K41
K13
ONE POLE
Flush Screw Terminals
MS Part
Number
MS24658-21A
-21B
-21D
-21E
-21F
MS24658-21G
-21H
-21J
-21K
-21L
MS24658-21M
-21N
-21P
-22D
-22F
MS24658-22G
-23D
-23F
-23G
-24E
MS24658-24F
-24K
-24M
-25F
-26F
MS24658-27E
-27L
-27N
-28E
-29F
MS24658-30F
-31E
-31F
-31K
-31L
Catalog
Number
8503K1
K27
K5
K2
K28
8503K3
K29
K30
K31
K32
8503K33
K4
K34
K10
K35
8503K9
K6
K36
K7
K16
8503K37
K38
K11
K22
K20
8503K12
K39
K14
K15
K21
8503K19
K18
K40
K41
K13
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
*
ON
*
ON
*
ON
NONE
ON
OFF
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
OFF
NONE
NONE
NONE
NONE
NONE
NONE
OFF
OFF
OFF
OFF
OFF
*
NONE
OFF
OFF
OFF
OFF
NONE
NONE
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
OFF
OFF
OFF
ON
ON
ON
NONE
NONE
NONE
NONE
NONE
ON
*
ON
*
ON
*
ON
*
ON
*
OFF
*
ON
*
ON
*
ON
*
ON
*
ON
*
* Momentary contact.
Indicates direction against which lever is locked.
See page A71 for circuit diagrams.
Reference bushing styles on page A26.
EATON CORPORATION Aerospace
TF300-5 June, 2004
A23
