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Custom & OEM power supplies

A US-based power supply supplier for custom and OEM switching power supplies — bring a drawing or a target spec and it is built under the same UL file and test procedure as our standard SKUs. Desktop or wall-mount enclosures; medical and industrial on request.

Custom & OEM power supplies

Build to your spec

HTS 8504.40.85
OutputUp to 140 W · single or multi-rail · fixed, PD, or programmed
EnclosureWall-mount or desktop enclosure to your mechanical drawing
CertificationUL 62368-1 · DoE VI · FCC · medical 60601 & regional (PSE / KC / BIS) on request
Private labelYour brand on the housing, your artwork on the carton; tooling quoted before commitment
OriginVietnam or China — your election, documented per unit
Discuss your spec

The marks every build carries.

Product certifications on the label, the packaging, and the documentation your procurement team audits against — verifiable by file number on request.

cULus ListedcULus LISTED
cRUus RecognizedcRUus REC.
cETLus IntertekcETLus
CECE
FCC Part 15FCC PART 15
RoHSRoHS
REACHREACH

Manufacturing operates under  ISO 9001:2015 · ISO 14001:2015 ·ISO/IEC 27001:2022 · TL 9000-H · QC 080000 HSPM · ESD S20.20 ·Amfori BSCI

See how we source

Custom & OEM power supplies — common questions

Can you build a power supply to our drawing?

Yes. Custom and OEM switching power supplies up to 140 W — single or multi-rail, fixed, PD, or programmed output — to your voltage, connector, and enclosure, under the same UL file and DoE Level VI testing as our standard lines.

What do you need to start a custom build?

A target spec or a drawing: output voltage and current, connector, enclosure (wall or desktop), certifications, and destination. From that we quote tooling, samples, MOQ, lead time, and price before you commit.

Do you handle medical or industrial power supplies?

Yes. Medical IEC 60601 and regional overlays (PSE, KC, BIS) on request, tested per unit to the standard your market requires.

Do custom builds carry the same certifications as your standard lines?

Yes — they are built under the same UL 62368-1 file and DoE Level VI efficiency testing, with private-label branding on the housing and carton.

What is the minimum order quantity and lead time?

Both depend on the build and how much is customized, including tooling. Send your spec and target volume and we quote MOQ, lead time, and price together.

Request a quote

Send the spec or drawing, target volume, certification, and destination — five lines get you a real quote for custom & oem power supplies.

Prefer email? rfq@kestnersupply.com reaches the same person.