Series—8866-8869 MIL-S-8834 Miniature Positive Action Switches
Solder Lug Terminals
MINIATURE POSITIVE ACTION SWITCHES
SELECTION TABLE
• Sealed bushing
• Current rating versatility
• 1, and 2 pole circuitry
• 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.
• Bushing seal or bonded seal per MIL-S-8834
• 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
*
*
*
*Momentary contact.
See page 77 for special circuit diagrams.
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.
Caution should be exercised during soldering and flux removal. See page 62 for details.
CIRCUIT WITH LEVER IN...
No. of C a t a l o g Type of 28 and 50VDC
1 1 5 VAC 60Hz and 400H z
P o l e s N u m b e r O p e r a t i o n (Amperes per pole) (Amperes per pole)
R e s i s t i v e I n d u c t i v e 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
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.
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
8 8 6 6
8 8 6 7
Up Center Down
Position Position Position (Keyway) M i l i t a r yC a t a l o g
Part Number N u m b e r
ONE POLE
ON OFF ON MS24655-211 8866K1
ON NONE OFF -221 K7
ON NONE ON -231 K4
ON OFF NONE -241 K5
ON OFF ON*MS24655-271 8866K2
NONE OFF ON*-281 K6
ON OFF ON*-311 K3
NONE ON ON*-321 K8
TWO POLE
ON OFF ON MS24656-211 8867K1
ON NONE OFF -221 K7
ON NONE ON -231 K4
ON OFF NONE -241 K5
ON OFF ON*MS24656-271 8867K2
NONE OFF ON*-281 K6
ON OFF ON*-311 K3
NONE ON ON*MS24656-321 8867K8
ON ON ON -331 K9
ON ON ON*-351 K10
ON ON ON*-341 K11
Series—8866-8869 MIL-S-8834 Miniature Positive Action Switches
Solder Lug Terminals
Mounting dimensions for reference only.
Non-functional terminals not supplied.
STANDARD
0.00 = inches
[0,0] = mm
Terminal IdentificationTerminal Identification
MINIATURE POSITIVE ACTION SWITCHES
MOUNTING DIMENSIONS—ONE POLE / 8866
PANEL CUTOUT DIMENSIONS
MOUNTING DIMENSIONS—TWO POLE / 8867
Series—8866-8869 MIL-S-8834 Miniature Positive Action Switches
Solder Lug Terminals
MINIATURE POSITIVE ACTION SWITCHES
SELECTION TABLE
*
*
*
CIRCUIT WITH LEVER IN...
8 8 6 9
8 8 6 8
Up Center Down
Position Position Position (Keyway) MS Part C a t a l o g MS Part C a t a l o g
N u m b erN u m b erN u m b erN u m b e r
ONE POLE
ON OFF ON MS90310-211 8868K1 Feature Not Available
ON NONE OFF -221 K7 in Single Pole Switches
ON NONE ON -231 K4
ON OFF NONE -241 K5
ON OFF ON*MS90310-271 8868K2
NONE OFF ON*-281 K6
ON OFF ON*-311 K3
NONE ON ON*MS21351-321 K8
TWO POLE
ON OFF ON MS90311-211 8869K1 MS90311-711 8869K1X
ON NONE OFF -221 K7 -721 K7X
ON NONE ON -231 K4 -731 K4X
ON OFF NONE -241 K5 -741 K5X
ON OFF ON*MS90311-271 8869K2 MS90311-771 8869K2X
NONE OFF ON*-281 K6 -781 K6X
ON OFF ON*-311 K3 -811 K3X
NONE ON ON*MS21353-321 8869K8MS21353-821 8869K8X
ON ON ON -331 K9-831 K9X
ON ON ON*-351 K10-851 K10X
ON ON ON*-341 K11-841 K11X
*Momentary contact.
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.
Caution should be exercised during soldering and flux removal. See page 62 for details.
Furnished with Bonded Seal Feature. (Meets 15’ head of water sealing level.)
Series—8866-8869 MIL-S-8834 Miniature Positive Action Switches
Solder Lug Terminals
Mounting dimensions for reference only.
Non-functional terminals not supplied.
STANDARD
0.00 = inches
[0,0] = mm
Terminal Identification
Terminal Identification
MINIATURE POSITIVE ACTION SWITCHES
MOUNTING DIMENSIONS—ONE POLE / 8868
MOUNTING DIMENSIONS—TWO POLE / 8869
Series—8866-8869 MIL-S-8834 Miniature Positive Action Switches
Solder Lug Terminals
Mounting dimensions for reference only.
STANDARD
0.00 = inches
[0,0] = mm
MINIATURE POSITIVE ACTION SWITCHES
• 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
See page 62 for soldering and cleaning recommendations
O P T I O N S / A C C E S S O R I E S PANEL CUTOUT DIMENSIONS