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1 Pole Lever Lock Switch - On/Off>

1 Pole Lever Lock Switch - On/Off>
1 POLE LEVER LOCK SWITCH - ON/OFF>8503 Series Lever Lock Toggle Switch | SPDT, ON-ON, P, Environmentally Sealed

The 8503K series are environmentally sealed toggle switches that are completely protected from dust, moisture, and other contaminates. The lever lock mechanism prevents accidental switch operation.

Version 8503K34 is a single-pole, double-throw toggle switch. Positions: ON-ON with P style bushing (locked out of and into keyway side)


  • Locking lever safety mechanism (must be pulled outward for toggle operation)
  • Threaded panel mount 
  • Thermoset molding materials meet flame retardant requirements
  • Molded-in terminal inserts and terminal numbers
  • Environmentally sealed per MIL-S-3950
  • MS approved and QPL'd per MIL-S-3950
  • Life: 20,000 operations at rated load 40,000 operations mechanical life

AI disclosure: this description was generated with AI assistance from this product's own listing data.


Product Codes

Mfr Part No:8503K34
MIL SPEC:MS24658-21P
ECCN:EAR99
MIL SPEC:MS24658-21P
SCHEDULE B CODE:8536.50.9065


Bushing:  15/32" - 32 threadTemperature Range:  -85F to +160F (-65C to +71C)Contact current max: 20AContact Voltage AC: 115V nominalContact Voltage DC: 28VContact configuration: Single-pole, Double-throw (SPDT)Switch operation: ON-ONMS part number: MS24658-21P

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  • Stock: Out of Stock
  • Manufacturer Part #: 8503K34
$57.40

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Returns & refund summary

  • 30-day return window — with prior return authorization, unopened in original packaging.
  • Restocking fee: 20% on unopened items, 30% on open-box items.
  • Refund processing fee: 5.51% applies only to customer-remorse returns and customer-initiated cancellations. If a problem is our fault (our cancellation, unavailability, wrong item, confirmed defect, or shipping damage) your refund is 100% with no fees.
  • Return shipping: paid by buyer on customer-remorse returns; we pay return shipping when the problem is our fault.
  • Non-returnable categories: installed/used parts, special-order or rebuilt items, programmed items (incl. ELTs), batteries, AOG-priority orders, international orders.

Full terms: Return Policy.

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See our full Manufacturer Authorizations page for the current per-brand status.

Need traceability paperwork?

If your installation requires FAA Form 8130-3, manufacturer Certificate of Conformance, or other traceability documentation, please call 1-877-722-8727 or email [email protected] before placing the order so we can confirm what is available for this part.

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