MINIATURE POSITIVE ACTION SWITCHES
Series—8866-8869
MIL-S-8834 Miniature Positive Action Switches
Solder Lug Terminals
SPECIFICATIONS
No. of Catalog
• Bushing seal or bonded seal per MIL-S-8834
Poles Number
Type of
Operation
FEATURES
CURRENT RATINGS
28 and 50VDC
115VAC 60Hz and 400 Hz
(Amperes per pole)
(Amperes per pole)
Resistive
Inductive
Resistive
Inductive
Load
Load
Load
Load
28VDC 50VDC 28VDC 50VDC 60Hz 400Hz 60Hz 400Hz
1
8866 Maintained and 5
1
1
–
2
3
1
2
and 8868 Momentary
2
8867 Maintained and 5
1
1
–
2
3
1
2
and 8869 Momentary
Minimum Rating: 25
µA
at 5 millivolts.
• Sealed bushing
• Current rating versatility
• 1, and 2 pole circuitr y
• Non-teasible mechanism for all but
center “ON” circuits
• Dry circuit (logic level loads) to power
switching levels
• Wiping action contacts
• Positve make and break action
• Small and large size bushings
and actuators
• Solder lug terminals
• Also available with locking actuators,
integrated wire termination and printed
circuit board terminals.
• MS approved and QPL’d to MIL-S-8834
• Temperature range: -67°F to +160°F
(-55°C to +71°C)
• Life: 20,000 operations at rated load
40,000 mechanical life
• “O” ring panel seal on 1/4"-40 type
bushing size
• Solder lug terminals .050 [1,27] dia. hole
SELECTION TABLE
CIRCUIT WITH LEVER IN...
Up
Position
Center
Position
Down
Position (Keyway)
Militar y
Part Number
Catalog
Numbery
8866K1
K7
K4
K5
8866K2
K6
K3
K8
x
8867K1
K7
K4
K5
8867K2
K6
K3
8867K8
x
K9
x
K10
x
K11
x
8866
*
8867
*
*
*
Momentary contact. circuit diagrams.
See page 77 for special
ONE POLE
ON
OFF
ON
NONE
ON
NONE
ON
OFF
ON
OFF
NONE
OFF
ON
OFF
NONE
ON
TWO POLE
ON
OFF
ON
NONE
ON
NONE
ON
OFF
ON
OFF
NONE
OFF
ON
OFF
NONE
ON
ON
ON
ON
ON
ON
ON
ON
OFF
ON
NONE
ON
ON
ON
ON
*
*
*
*
MS24655-211
-221
-231
-241
MS24655-271
-281
-311
-321
MS24656-211
-221
-231
-241
MS24656-271
-281
-311
MS24656-321
-331
-351
-341
ON
OFF
ON
NONE
ON
ON
ON
ON
ON
ON
ON
*
*
*
*
*
*
x
Dielectric per MIL-S-8834 except limited to 1250 volts. Delayed action of the switch toggle lever may cause circuit to close or
open before snap action mechanism trips.
y
Caution should be exercised during soldering and flux removal. See page 62 for details.
MINIATURE POSITIVE ACTION SWITCHES
Series—8866-8869
MIL-S-8834 Miniature Positive Action Switches
Solder Lug Terminals
MOUNTING DIMENSIONS—TWO POLE / 8867
MOUNTING DIMENSIONS—ONE POLE / 8866
Terminal Identification
Non-functional terminals not supplied.
Terminal Identification
PANEL CUTOUT DIMENSIONS
STANDARD
0.00 = inches
[0,0] = mm
Mounting dimensions for reference only.
MINIATURE POSITIVE ACTION SWITCHES
Series—8866-8869
MIL-S-8834 Miniature Positive Action Switches
Solder Lug Terminals
SELECTION TABLE
CIRCUIT WITH LEVER IN...
Up
Position
Center
Position
Down
Position (Keyway)
MS Part
Number
Catalog
Number
y
8868K1
K7
K4
K5
8868K2
K6
K3
K8x
8869K1
K7
K4
K5
8869K2
K6
K3
8869K8x
K9x
K10x
K11x
MS Part
Numberz
Catalog
Numbery
8868
*
ON
ON
ON
ON
ON
NONE
ON
NONE
ON
ON
ON
ON
ON
NONE
ON
NONE
ON
ON
ON
8869
*
*
ONE POLE
OFF
NONE
NONE
OFF
OFF
OFF
OFF
ON
TWO POLE
OFF
NONE
NONE
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
OFF
ON
NONE
ON
ON
ON
ON
*
*
*
*
MS90310-211
-221
-231
-241
MS90310-271
-281
-311
MS21351-321
MS90311-211
-221
-231
-241
MS90311-271
-281
-311
MS21353-321
-331
-351
-341
Feature Not Available
in Single Pole Switches
–
–
–
–
–
–
–
–
–
–
MS90311-711
-721
-731
-741
MS90311-771
-781
-811
MS21353-821
-831
-851
-841
8869K1X
K7X
K4X
K5X
8869K2X
K6X
K3X
8869K8Xx
K9Xx
K10Xx
K11Xx
ON
OFF
ON
NONE
ON
ON
ON
ON
ON
ON
ON
*
*
*
*
*
*
*
Momentary contact.
x
Dielectric per MIL-S-8834 except limited to 1250 volts. Delayed action of the switch toggle lever may cause circuit to close or open
before snap action mechanism trips.
y
Caution should be exercised during soldering and flux removal. See page 62 for details.
z
Furnished with Bonded Seal Feature. (Meets 15’ head of water sealing level.)
MINIATURE POSITIVE ACTION SWITCHES
Series—8866-8869
MIL-S-8834 Miniature Positive Action Switches
Solder Lug Terminals
MOUNTING DIMENSIONS—ONE POLE / 8868
Terminal Identification
MOUNTING DIMENSIONS—TWO POLE / 8869
STANDARD
0.00 = inches
[0,0] = mm
Mounting dimensions for reference only.
Non-functional terminals not supplied.
Terminal Identification
MINIATURE POSITIVE ACTION SWITCHES
Series—8866-8869
MIL-S-8834 Miniature Positive Action Switches
Solder Lug Terminals
PANEL CUTOUT DIMENSIONS
OPTIONS/ACCESSORIES
• Special mounting hardware
• Special marking
• Mounting hardware furnished assembled
• Panel seal, Part Number 32-341
• Lever extensions and attachable tips
• Special circuits
• Special bushing and lever plating
• Mounting adapter nuts
• Custom wire harnesses
• EMI/RFI capability on two pole (large bushing)
• Gold plated contacts
STANDARD
0.00 = inches
[0,0] = mm
Mounting dimensions for reference only.
See page 62 for soldering and cleaning recommendations
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