What kind of 4-pin power connector is this, displayed in this (exemplary) image? Are there any specs of the maximum current and voltage it is designed to provide? (Unfortunately this was the best image I could find.)

enter image description here

  • 1
    \$\begingroup\$ Glad we know it's a Bosch even though the connector is out of focus. -_- Can you please focus on the connector and re-upload? That's maybe a variant of a DIN connector, though the barrel is not exactly round. \$\endgroup\$ Commented Jan 6, 2019 at 10:45
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    \$\begingroup\$ Might be mini-DIN, or something else. You have to measure yourself. \$\endgroup\$
    – CL.
    Commented Jan 6, 2019 at 10:52
  • \$\begingroup\$ @try-catch-finally I currently do not have anything with this connector, I was just looking for an image online. But you're right, it is a mini-DIN! Consider adding this as an answer! \$\endgroup\$
    – flawr
    Commented Jan 6, 2019 at 10:58
  • \$\begingroup\$ @CL. Thanks, it is indeed a mini-DIN! Please add this as an answer so that I can accept it. \$\endgroup\$
    – flawr
    Commented Jan 6, 2019 at 10:59
  • \$\begingroup\$ I'm not 100% confident its a DIN connector; its hard to seed because it's blurry, but there's that bulge on the bottom side of the barrel - that won't fit properly into a DIN socket. It might be a proprietary variant though. @CL, fyi \$\endgroup\$ Commented Jan 6, 2019 at 11:57

1 Answer 1


This looks like a 4-pin mini-DIN connector.

Electrically, the connector itself is usually the least sensitive part of a supply. However, mini-DIN is designed to save space, so you can easily run into its limits.

The actual specs depend on the model; you always have to the check the datasheet. (For example, the CUI MD-40 is rated for 1 A at 100 V, or 2 A at 12 V.)


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