# Amass EC3 connector (male / plug, EC3-M)

> What are the dimensions of the Amass EC3 connector?

- Category: RC planes › Connectors
- Kind: Modern device
- Basis: Secondary source: Electrokit (retailer) (copy of the maker's figures; the maker publishes none directly)
- Page: https://xemstudio.com/objects/amass-ec3-connector-male/ · JSON: https://xemstudio.com/api/geometry?object=amass-ec3-connector-male · Plain text: https://xemstudio.com/objects/amass-ec3-connector-male/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); files CC BY 4.0 or their publisher's license
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

## Overall (mm)

| length | width | height |
|---|---|---|
| 16.5 | 7.5 | 16 |

**Exact dimensions.** True size, with no printing tolerance added.

## Notes

- Retailer listing of Amass EC3 (secondary). The three numbers are printed without saying which is length, width or height; the box keeps the printed order.
- True size, no printing tolerance added. Only published numbers are used; anything not published is said so.
- Secondary source: the numbers come from a retailer or magazine copy of the maker's specification.

## Sizes

| dimension | value |
|---|---|
| Dimensions | 16.5 × 7.5 × 16 mm |
| Pin / jack | Ø3.5 mm |
| Rated current | 25 A continuous (50 A momentary) |
| Weight | 2.5 g |
| Rated voltage | 500 VDC |
| Recommended wire | AWG 14–11 (2.5–4 mm²) |
| Contact resistance | 0.6 mΩ |
| MPN | EC3-M |

## Where the files are

- Electrokit (retailer): [EC3 25A male](https://www.electrokit.com/en/stromkontakt-ec3-25a-hane) — web — Publisher's page; dimensions are facts

## Free STEP/STL (1 parts, CC BY 4.0, Xem Studio)

Index: https://xemstudio.com/files/hardware/amass-ec3-connector-male/index.json

- amass-ec3-connector-male-envelope: [STEP](https://xemstudio.com/files/hardware/amass-ec3-connector-male/amass-ec3-connector-male-envelope.step) · [STL](https://xemstudio.com/files/hardware/amass-ec3-connector-male/amass-ec3-connector-male-envelope.stl) — Envelope 16.5 × 7.5 × 16 mm (Single connector housing, dimensions as printed (axis order not labelled))

## Questions

**What pin size is EC3?**

Ø3.5 mm, rated 25 A continuous.

## Fits with

- [RC LiPo battery sizes: ROAR 2S hardcase, shorty, saddle, 4S brick; drone 4S / 6S and 3S 2200 packs; connectors](https://xemstudio.com/objects/rc-lipo-batteries/)
- [Amass EC3 connector (female / socket)](https://xemstudio.com/objects/amass-ec3-connector-female/)