MS3121E12-10S

Cable Connecting Plug — MIL-DTL-26482 Series I, Shell 12

10x #20 · Socket (Female) · Shell 12 · Insert 12-10 · Class E · Crimp · Bayonet coupling

Specifications

Part Number

MS3121E12-10S

Specification

MIL-DTL-26482 Series I (crimp contact)

Series / Family

MIL-DTL-26482 Series I — bayonet coupling, 500 mating cycles

Shell Style

3121 — Cable Connecting Plug

Mounting

In-line cable connecting plug, no panel cutout

Shell Size

12

Insert Arrangement

12-10

Contacts

10x #20

Contact Type

Socket (Female)

Contact Size

#20

Contact Rating

7.5 A per #20 contact

Wire Range

24-20 AWG

Termination

Crimp, rear-insertable / rear-releasable

Contact Retention

Beryllium-copper retention clip

Service Class

E — environmental, olive drab cadmium

Coupling

Three-point bayonet, 1/3 turn, quick disconnect

Keying

5 keyway polarisation; alternate key positions available

Shell Material

Aluminium alloy

Finish

Olive drab cadmium over aluminium (class E, environmental)

Operating Temperature

-55 °C to +125 °C

Salt Spray

500 hours

Insulation Resistance

5,000 MΩ min at 500 VDC

Durability

500 mating cycles minimum

Vibration

10-2000 Hz, 15 g

Sealing

Environmental when mated, interfacial seal

Cross-brand

Amphenol PT, ITT Cannon KPT, Souriau 851

Crimp Variant Note

MS312x is the crimp equivalent of the solder MS311x styles

Part Number Form

MS + shell style + class letter + shell size + arrangement + contact gender

Cross-Reference

Airoadcon / MILAmphenol PTITT Cannon KPTSouriau
MS3121E12-10SPT03121E12-10SKPT03121E12-10S85101E12-10S

Applications

MIL-DTL-26482 Series I is the classic bayonet-coupling miniature circular connector family, qualified to 500 mating cycles with olive drab cadmium class E or F finishes. The MS312x group is the crimp counterpart of the better-known solder MS311x styles: MS3120 is the wall mount receptacle, MS3121 the cable connecting plug, MS3122 the box mount receptacle, MS3124 the jam nut receptacle and MS3126 the straight plug. Because the contacts are rear-insertable and rear-releasable, a damaged contact can be replaced with a removal tool instead of reworking a soldered joint, which is why crimp variants are preferred for field-serviceable harnesses. All MS312x halves mate with the equivalent MS311x part numbers and with the European VG95328 series.

Need MS3121E12-10S?

Cross-brand compatible. Free samples available. 4-week lead time on standard configurations. Email: info@airoadcon.com | Phone: +86-189-9192-7716

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