EATON CORPORATION Aerospace TF300-5 June, 2004 A23
No. of
Poles
Catalog
Number
Type of
Operation
1 8503 Maintained 5 20 15 3 15 10
Momentary 4 15 10 2 15 7
2 8504 Maintained 7 20 15 4 15 15
Momentary 5 18 10 2 11 8
4 8505 Maintained 5 20 12 4 15 15
Momentary 4 18 10 2 11 8
Mi ni m um Rat i ng: "Int erm edi at e Current " per M IL-S-3950.
28VDC
115 VAC
60 or 400Hz
Lamp
Load
Resistive
Load
Inductive
Load
Lamp
Load
Resistive
Load
Inductive
Load
LEVER LOCK SELECTION TABLE
8503 8504 8505
CIRCUIT WITH LEVER IN . . . ONE POLE TWO POLE FOUR POLE
Up
Position
Center
Position
Lever M
Lock
Bushing
Style
Down Position
(Keyway)
ON J
ON
ON J
ON
ON J
ON
ON J
ON
ON J
ON
ON J
ON
ON
ON J
ON J
ON
ON J
ON J
ON
ON
ON J
ON J
ON J
ON J
ON J
*ON
*ON
*ON
NONE
ON J
OFFJ
ON
ON J
ON J
ON
IOFF J
IOFF J
OFF
IOFF J
OFF
OFF
OFF J
IOFF
IOFF J
OFFJ
IOFF
IOFF
OFF J
NONE
NONE
NONE
NONE
NONE
NONE
IOFF
OFF
IOFF
IOFF
OFF *
NONE
IOFF J
OFF J
IOFF
OFF J
NONE
NONE
IOFF J
OFF
IOFF J
OFF J
ION
ION
ION
ON
ON
ION
ON
ION
ON
ON
ON
ON
ION
IOFF
OFF
IOFF
ION
ON
ION
NONE
NONE
NONE
NONE
NONE
ON *
ON *
ON *
ON *
ON *
OFF*
ON *
ON *
ON *
ON *
ON *
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
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
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
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
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
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
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
Catalog
Number
MS Part
Number
Flush Screw Terminals Flush Screw Terminals Flush Screw Terminals
MS Part
Number
Catalog
Number
Catalog
Number
MS Part
Number
* Momentary contact.
JIndicates direction against which lever is locked.
See page A71 for circuit diagrams.
MReference bushing styles on page A26.
MILITARY - ENVIRONMENTALLY SEALED SWITCHES
Series - 8503, 8504, 8505 MIL-S-3950 Lever Lock Switches
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
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
CURRENT RATINGS
