U p C e n t e r D o w n
P o s i t i o n P o s i t i o n Position (Keyway)
• Envi ronmentally sealed per MIL-S-3950
• MS approved and QPL’d per MIL-S-3950
• Thermoset molding materials meet flame
re t a rdant re q u i rements of
• Bushing: 15/32" - 32 thre a d
• Te m p e r a t u re Range: -85°F to +160°F
(-65°C to +71°C)
• Life: 20,000 operations at rated load
40,000 operations mechanical life
• Environmentally sealed
• 1, 2, and 4 pole circ u i t ry
• 2 & 3 position with maintained and
m o m e n t a ry action
• Locking actuator for safety
• Molded-in terminal inserts and term i n a l
n u m b e r s
LEVER LOCK SELECTION T A B L E
Series—8503, 8504, 8505 MIL-S-3950 Lever Lock Switches
MILITARY—ENVIRONMENTALLY SEALED SWITCHES
Flush Screw Te r m i n a l s Flush Screw Te r m i n a l s Flush Screw Te r m i n a l s
MS Part C a t a l o g MS Part C a t a l o g MS Part C a t a l o g
N u m b e r N u m b e r N u m b e r N u m b e r N u m b e r N u m b e r
O N➜O F F➜O N AM S 2 4 6 5 8 - 2 1 A 8 5 0 3 K 1 M S 2 4 6 5 9 - 2 1 A 8 5 0 4 K 1 M S 2 4 6 6 0 - 2 1 A 8 5 0 5 K 1
O N O F F➜O N B- 2 1 B K 2 7 - 2 1 B K 2 7 - 2 1 B K 2 7
O N➜O F F O N D- 2 1 D K 5 - 2 1 D K 5 - 2 1 D K 5
O N O F F➜O N E- 2 1 E K 2 - 2 1 E K 2 - 2 1 E K 2
O N➜O F F O N F- 2 1 F K 2 8 - 2 1 F K 2 8 - 2 1 F K 2 8
O N O F F O N GM S 2 4 6 5 8 - 2 1 G 8 5 0 3 K 3 M S 2 4 6 5 9 - 2 1 G 8 5 0 4 K 3 M S 2 4 6 6 0 - 2 1 G 8 5 0 5 K 3
O N➜O F F➜O N H- 2 1 H K 2 9 - 2 1 H K 2 9 - 2 1 H K 2 9
O N O F F O N J- 2 1 J K 3 0 - 2 1 J K 3 0 - 2 1 J K 3 0
O N➜O F F➜O N K- 2 1 K K 3 1 - 2 1 K K 3 1 - 2 1 K K 3 1
O N O F F➜O N L- 2 1 L K 3 2 - 2 1 L K 3 2 - 2 1 L K 3 2
O N➜O F F O N MM S 2 4 6 5 8 - 2 1 M 8 5 0 3 K 3 3 M S 2 4 6 5 9 - 2 1 M 8 5 0 4 K 3 3 M S 2 4 6 6 0 - 2 1 M 8 5 0 5 K 3 3
O N O F F O N N- 2 1 N K 4 - 2 1 N K 4 - 2 1 N K 4
O N O F F➜O N P- 2 1 P K 3 4 - 2 1 P K 3 4 - 2 1 P K 3 4
O N➜N O N E O F F D- 2 2 D K 1 0 - 2 2 D K 1 0 - 2 2 D K 1 0
O N➜N O N E O F F F- 2 2 F K 3 5 - 2 2 F K 3 5 - 2 2 F K 3 5
O N N O N E O F F GM S 2 4 6 5 8 - 2 2 G 8 5 0 3 K 9 M S 2 4 6 5 9 - 2 2 G 8 5 0 4 K 9 M S 2 4 6 6 0 - 2 2 G 8 5 0 5 K 9
O N➜N O N E O N D- 2 3 D K 6 - 2 3 D K 6 - 2 3 D K 6
O N➜N O N E O N F- 2 3 F K 3 6 - 2 3 F K 3 6 - 2 3 F K 3 6
O N N O N E O N G- 2 3 G K 7 - 2 3 G K 7 - 2 3 G K 7
O N O F F N O N E E- 2 4 E K 1 6 - 2 4 E K 1 6 - 2 4 E K 1 6
O N➜O F F N O N E FM S 2 4 6 5 8 - 2 4 F 8 5 0 3 K 3 7 M S 2 4 6 5 9 - 2 4 F 8 5 0 4 K 3 7 M S 2 4 6 6 0 - 2 4 F 8 5 0 5 K 3 7
O N➜O F F➜N O N E K- 2 4 K K 3 8 - 2 4 K K 3 8 - 2 4 K K 3 8
O N➜O F F N O N E M- 2 4 M K 1 1 - 2 4 M K 1 1 - 2 4 M K 1 1
O N➜O F F*N O N E F- 2 5 F K 2 2 - 2 5 F K 2 2 - 2 5 F K 2 2
O N➜N O N E O N*F- 2 6 F K 2 0 - 2 6 F K 2 0 - 2 6 F K 2 0
O N O F F➜O N*EM S 2 4 6 5 8 - 2 7 E 8 5 0 3 K 1 2 M S 2 4 6 5 9 - 2 7 E 8 5 0 4 K 1 2 M S 2 4 6 6 0 - 2 7 E 8 5 0 5 K 1 2
O N O F F➜O N*L- 2 7 L K 3 9 - 2 7 L K 3 9 - 2 7 L K 3 9
O N O F F O N*N- 2 7 N K 1 4 - 2 7 N K 1 4 - 2 7 N K 1 4
N O N E O F F➜O N*E- 2 8 E K 1 5 - 2 8 E K 1 5 - 2 8 E K 1 5
O N➜N O N E O F F*F- 2 9 F K 2 1 - 2 9 F K 2 1 - 2 9 E K 2 1
O F F➜N O N E O N*FM S 2 4 6 5 8 - 3 0 F 8 5 0 3 K 1 9 M S 2 4 6 5 9 - 3 0 F 8 5 0 4 K 1 9 M S 2 4 6 6 0 - 3 0 F 8 5 0 5 K 1 9
O N O F F➜O N*E- 3 1 E K 1 8 - 3 1 E K 1 8 - 3 1 E K 1 8
O N➜O F F O N*F- 3 1 F K 4 0 - 3 1 F K 4 0 - 3 1 F K 4 0
O N➜O F F➜O N*K- 3 1 K K 4 1 - 3 1 K K 4 1 - 3 1 K K 4 1
O N O F F➜O N*L- 3 1 L K 1 3 - 3 1 L K 1 3 - 3 1 L K 1 3
* M o m e n t a ry contact. See page 73 for circuit diagrams.
➜ Indicates direction against which lever is locked. ①Reference bushing styles on Page 34.
8 5 0 4 8 5 0 58 5 0 3
*
*
*
No. of C a t a l o g Type of 115VAC
P o l e s N u m b e r O p e r a t i o n 28V D C 60 or 400H z
L a m p R e s i s t i v e I n d u c t i v e L a m p R e s i s t i v e I n d u c t i v e
L o a d L o a d L o a d L o a d L o a d L o a d
18 5 0 3 M a i n t a i n e d 52 0 1 5 31 5 1 0
M o m e n t a ry 4 1 5 1 0 21 5 7
28 5 0 4 M a i n t a i n e d 72 0 1 5 41 5 1 5
M o m e n t a ry 5 1 8 1 0 21 1 8
48 5 0 5 M a i n t a i n e d 52 0 1 2 41 5 1 5
M o m e n t a ry 4 1 8 1 0 21 1 8
Minimum Rating: “Intermediate Current” per MIL-S-3950
CIRCUIT WITH LEVER IN... ONE POLE TWO POLE FOUR POLE
F E AT U R E S S P E C I F I C AT I O N S CURRENT RAT I N G S
L e v e r①
L o c k
B u s h i n g
S t y l e
Series—8503, 8504, 8505 MIL-S-3950 Lever Lock Switches
MILITARY—ENVIRONMENTALLY SEALED SWITCHES
Flush Screw Te r m i n a l s Flush Screw Te r m i n a l s Flush Screw Te r m i n a l s
MS Part C a t a l o g MS Part C a t a l o g MS Part C a t a l o g
N u m b e r N u m b e r N u m b e r N u m b e r N u m b e r N u m b e r
O N➜O F F O N*MM S 2 4 6 5 8 - 3 1 M 8 5 0 3 K 1 7 M S 2 4 6 5 9 - 3 1 M 8 5 0 4 K 1 7 M S 2 4 6 6 0 - 3 1 M 8 5 0 5 K 1 7
O N O F F O N*N- 3 1 N K 8 - 3 1 N K 8 - 3 1 N K 8
O N O N➜N O N E E- 3 2 E K 2 3 - 3 2 E K 2 3 - 3 2 E K 2 3
O N O N➜N O N E E- 3 3 E K 2 4 - 3 3 E K 2 4 - 3 3 E K 2 4
O N➜O N N O N E F- 3 3 F K 2 5 - 3 3 F K 2 5 - 3 3 F K 2 5
O N➜O N➜N O N E KM S 2 4 6 5 8 - 3 3 K 8 5 0 3 K 2 6 M S 2 4 6 5 9 - 3 3 K 8 5 0 4 K 2 6 M S 2 4 6 6 0 - 3 3 K 8 5 0 5 K 2 6
O N➜O N N O N E M- 3 3 M K 4 2 - 3 3 M K 4 2 - 3 3 M K 4 2
O N➜O N➜O N A – – M S 2 7 4 0 8 - 1 A K 4 3 M S 2 7 4 0 9 - 1 A K 4 3
O N O N➜O N B – – - 1 B K 4 4 - 1 B K 4 4
O N➜O N O N D – – - 1 D K 4 5 - 1 D K 4 5
O N O N➜O N EM S 2 7 4 0 8 - 1 E 8 5 0 4 K 4 6 M S 2 7 4 0 9 - 1 E 8 5 0 5 K 4 6
O N➜O N O N F- 1 F K 4 7 - 1 F K 4 7
O N O N O N G – – - 1 G K 4 8 - 1 G K 4 8
O N➜O N➜O N H1 H K 4 9 - 1 H K 4 9
O N O N O N J- 1 J K 5 0 - 1 J K 5 0
O N➜O N➜O N KM S 2 7 4 0 8 - 1 K 8 5 0 4 K 5 1 M S 2 7 4 0 9 - 1 K 8 5 0 5 K 5 1
O N O N➜O N L- 1 L K 5 2 - 1 L K 5 2
O N➜O N O N M – – - 1 M K 5 3 - 1 M K 5 3
O N O N O N N- 1 N K 5 4 - 1 N K 5 4
O N O N➜O N P- 1 P K 5 5 - 1 P K 5 5
O N O N➜O N*EM S 2 7 4 0 8 - 2 E 8 5 0 4 K 5 6 M S 2 7 4 0 9 - 2 E 8 5 0 5 K 5 6
O N➜O N O N*F- 2 F K 5 7 - 2 F K 5 7
O N➜O N➜O N*K – – - 2 K K 5 8 2 K K 5 8
O N O N➜O N*L- 2 L K 5 9 - 2 L K 5 9
O N➜O N O N*M- 2 M K 6 0 - 2 M K 6 0
O N O N O N*NM S 2 7 4 0 8 - 2 N 8 5 0 4 K 6 1 M S 2 7 4 0 9 - 2 N 8 5 0 5 K 6 1
O N O N➜O N*E- 3 E K 6 2 - 3 E K 6 2
O N O N➜O N*L – – - 3 L K 6 3 - 3 L K 6 3
O N O N O N*N- 3 N K 6 4 - 3 N K 6 4
O N➜O N➜O N A- 4 A K 6 5 – –
O N O N➜O N BM S 2 7 4 0 8 - 4 B 8 5 0 4 K 6 6
O N➜O N O N D- 4 D K 6 7
O N O N➜O N E – – - 4 E K 6 8 – –
O N➜O N O N F- 4 F K 6 9
O N O N O N G- 4 G K 7 0
O N➜O N➜O N HM S 2 7 4 0 8 - 4 H 8 5 0 4 K 7 1
O N O N O N J- 4 J K 7 2
O N➜O N➜O N K – – - 4 K K 7 3 – –
O N O N➜O N L- 4 L K 7 4
O N➜O N O N M- 4 M K 7 5
O N O N O N NM S 2 7 4 0 8 - 4 N 8 5 0 4 K 7 6
O N O N➜O N P- 4 P K 7 7
O N O N➜O N*E – – - 5 E K 7 8 – –
O N➜O N O N*F- 5 F K 7 9
O N➜O N➜O N*K- 5 K K 8 0
O N O N➜O N*LM S 2 7 4 0 8 - 5 L 8 5 0 4 K 8 1
O N➜O N O N*M- 5 M K 8 2
O N O N O N*N – – - 5 N K 8 3 – –
O N O N➜O N*E- 6 E K 8 4
O N O N➜O N*L- 6 L K 8 5
O N O N O N*N – – - 6 N K 8 6 – –
O N O N➜O N B- 7 B K 8 7
*M o m e n t a ry contact.
➜ Indicates direction against which lever is locked.
See page 73 for circuit diagrams.
①Reference bushing styles on Page 34.
8 5 0 4 8 5 0 58 5 0 3
*
*
*
*
*
*
*
CIRCUIT WITH LEVER IN... ONE POLE TWO POLE FOUR POLE
LEVER LOCK SELECTION TABLE, CON’T.
U p C e n t e r D o w n
P o s i t i o n P o s i t i o n Position (Keyway) L e v e r①
L o c k
B u s h i n g
S t y l e
Terminal Identification
Mounting dimensions for reference only.
Non-functional terminals not supplied.
STANDARD
0.00 = inches
[0,0] = mm
Terminal Identification
MOUNTING DIMENSIONS—ONE POLE / 8503
MOUNTING DIMENSIONS—TWO POLE / 8504
Series—8503, 8504, 8505 MIL-S-3950 Lever Lock Switches
MILITARY—ENVIRONMENTALLY SEALED SWITCHES
Terminal Identification
Non-functional terminals not supplied.
• Special mounting hard w a re
• Mounting hard w a re furnished assembled
• Te rminal screws furnished assembled
• Substitute sems scre w s
• Special circ u i t s
• Panel seal, part number 32-341 (See Accessories
and Custom Components section)
• Special shaped caps available
• Custom wiring harn e s s e s
Mounting dimensions for reference only.
STANDARD
0.00 = inches
[0,0] = mm
MOUNTING DIMENSIONS—FOUR POLE / 8505
O P T I O N S / A C C E S S O R I E S LEVER LOCK – BUSHING STYLES
Series—8503, 8504, 8505 MIL-S-3950 Lever Lock Switches
MILITARY—ENVIRONMENTALLY SEALED SWITCHES
PANEL CUTOUT DIMENSIONS
KEYWAYSIDE
