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20 Pole Relay Switching Unit 306111-00

20 Pole Relay Switching Unit 306111-00
Out of Stock - On Backorder
20 Pole Relay Switching Unit 306111-00
20 POLE RELAY SWITCHING UNIT 306111-00
SR 54 Switching Module | 20 Pole

The SR 54 switching relay provides 20 poles of switching through five hermetically sealed, bifurcated relays. The SR 54 has a built-in circuit that switches all relays to their de-energized condition whenever K6 is activated. This can be used for such applications as insuring LOC is presented on the HSI whenever a LOC signal is selected. 


  • 20 poles of switching
  • Hermetically sealed bifurcated relay
  • Gold plated contact relays
  • 2 amp resistive load rating at 28VDC
  • 120mA coil current

Product Codes

Mfr Part No:306111-00


Weight: 0.26 lbDimensions: 3.92 x 0.82 x 3.5 in.Operating temperature: -20ºC to 55ºCAltitude: 50,000ftVoltage: 28VDCCurrent required: 120mA

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  • Stock: Out of Stock - On Backorder
  • Manufacturer Part #: 306111-00
$810.92

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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 to all refunds (returns, cancellations, core-fee refunds) regardless of reason.
  • Return shipping: paid by buyer.
  • 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.

Authenticity & authorization

All parts sold by American Aviation Parts are genuine factory products sourced through authorized distribution channels. Our authorization status varies by brand — for some brands we are a direct authorized dealer; for others we are an independent reseller through authorized distribution. Either way, the part you receive is the same factory product, with standard documentation available on request.

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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