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.
①Dielectric 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.
②Caution 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 r②
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 K8①
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 8867K8①
ON ON ON -331 K9①
ON ON ON*-351 K10①
ON ON ON*-341 K11①
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 er②N u m b er③N u m b e r②
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 K8①–
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 8869K8①MS21353-821 8869K8X①
ON ON ON -331 K9①-831 K9X①
ON ON ON*-351 K10①-851 K10X①
ON ON ON*-341 K11①-841 K11X①
*Momentary contact.
①Dielectric 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.
②Caution should be exercised during soldering and flux removal. See page 62 for details.
③Furnished 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