High-Performance MIL-DTL-26482 Series Environmentally Sealed Circular Connector
The MS3114E8-4S to for mission-critical applications, this connector delivers exceptional environmental sealing, mechanical robustness, and reliable electrical performance in the with legacy systems while providing modern reliability enhancements for next-generation platforms.
This connector series is engineered for defense and industrial systems requiring uncompromising reliability:
| Parameter | Specification | Shell Material | Aluminum alloy, cadmium plated | | Contact Plating | Gold over nickel | | Insert Material | Thermoplastic, chemical-resistant | | Temperature Range | -| Mating Cycles | 500 minimum | | Sealing Performance | IP68 (submersible to 10m depth) |
The product delivers:
This receptacle is the fixed half of a mated pair. It is mounted through a panel cut-out, with the cable terminated inside the enclosure and only the coupling face left exposed, so the wiring stays protected and service work happens from behind the panel.
The 8-4 code sets the shell size and contact arrangement, and the compact pattern keeps the panel footprint small. The interface is keyed, so the mating plug can only be offered up one way and contacts cannot be cross-mated. Once the two halves are locked together, the seal closes across the joint and keeps dust, spray and wash-down water out of the contact chamber. Vibration, salt spray, high temperature and shock resistance all form part of the Series I specification this receptacle is built to.
| Parameter | Specification |
|---|---|
| Series | MIL-DTL-26482 Series I |
| Shell size and insert arrangement | 8-4 |
| Mounting style | Panel mount receptacle with jam nut |
| Shell material | Aluminium alloy, cadmium plated to MIL-STD-171 |
| Contact plating | Gold over nickel |
| Insert material | Thermoplastic, chemical resistant |
| Temperature range | -65 °C to +175 °C |
| Mating cycles | 500 minimum |
| Sealing | IP68, submersible to 10 m |
| Contact current | Up to 5 A per contact |
| Contact voltage | Up to 500 V |
| Shielding | EMI/RFI to MIL-STD-461 |
Match on the full designation rather than the family name: for a MIL-DTL-26482 connector the series, shell size, insert arrangement and contact gender all have to line up before two halves will couple. Send us the part number on your existing plug together with the marking on the receptacle and we will confirm the pairing. That check is what keeps a replacement from arriving as the wrong half of the pair.
This is the panel-mounted half — the receptacle that is fixed through a cut-out with its wiring behind the panel. The cable connector is the free plug that mates into it, and that is the half which absorbs most of the handling wear. On an aerospace connector build, order both halves from the same series so the keying and insert arrangement match.
The coupling is keyed and locks fully, so the plug can only be offered up one way and the two halves cannot drift apart or be cross-mated. Contact retention is part of the Series I design, which is why these receptacles hold on to their circuits on moving equipment. After any maintenance on the panel, check that the coupling is fully seated — a half-turned coupling is the usual cause of an intermittent circuit.
Yes. MIL-DTL-26482 Series I is a long-established interface and this receptacle is built to Revision G of the standard, so it works as a replacement on equipment originally fitted with the same shell size and insert arrangement. Send us the old part marking and we will confirm the match. Where the panel cut-out is already drilled, the fixing dimensions matter as much as the contacts.
The shell is a cadmium-plated aluminium alloy and the contacts are gold over nickel, so the metal parts are chosen for corrosive surroundings. With the plug mated, the seal closes across the interface and protects the contact chamber from spray and immersion. Keep the coupling face clean during service and make sure the plug is fully engaged — that joint is what makes a harsh environment connector work.
Start with the part marking and match it to the order and the drawing. Then look at the coupling face: no damage to the keyway, contacts sitting square in the insert, and plating free of scratches or exposed base metal. Dry-mate one receptacle with a plug and confirm the coupling locks and releases smoothly. Raise anything that does not look right before the parts go onto a panel, not after.
