Family reference imageD38999 Series III · Metal shell
MIL-DTL-38999 III / EN3645
Metal-shell circular connectors for signal, power and data interfaces in demanding environments.

Push-pull · 2 + PE · 25 A
Pin-contact flange receptacle with two power contacts and protective earth; crimp termination.
| Part reference | 1331E303AMS |
|---|---|
| Family / reference | 1331 power / EN61984 |
| Mounting | Style E — flange receptacle |
| Insert | 1331-303A; 2 power + PE |
| Contacts | Pin |
| Termination | Crimp; machined contacts |
| Rated current | 25 A at 40°C (manufacturer rating table) |
| Polarisation | Standard |
| Shell | Nickel-plated aluminium |
| Coupling | Push-pull |
| Voltage selection | Depends on pollution degree and sealing; confirm for the installation |
Reference decoded from ordering and insert information, reviewed 2026-09-18. Confirm dimensions, ratings, materials and approvals for the exact quoted part.
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303A is the 25 A insert, distinct from the 40 A 303 arrangement. This is an industrial power connector reference; no military qualification is implied. Confirm the mating reference, sealing and application voltage before ordering.