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Home›Specialties›Drilling Rig Electrical›Ross Hill / NOV Cross-Reference
Drilling Rig Electrical · Ross Hill / NOV

Ross Hill / NOV Cross-Reference

How Ross Hill and NOV part numbers line up — and where NOV used distinct numbers. Reference only; verify against the nameplate.

When NOV acquired Ross Hill Controls and the Hill Hayes SCR line, most numbering carried straight over — so in most cases the Ross Hill number and the NOV number are the same. The DC control modules are the main place that changed. Here's how the common numbers line up.

Reference only — verify against the nameplate. Independent sourcing, not an authorized distributor. Ross Hill and NOV are trademarks of their respective owners, used for reference only.

Ross Hill to NOV cross-reference

Ross Hill P/NNOV / equivalentPartNotes
0521-2500-140521-2500-14AC control moduleCarried forward; also seen as 521250000
0522-2400-230522-2400-23DC control moduleCarried forward in most cases
0522-2400-216415-2400-21DC control moduleNOV used a distinct 6415- number
6702ED5846702ED584SCR bay contactorEaton / Cutler-Hammer part
Detail pages: AC control module, DC control module, SCR bay components, and power modules.

Condition & sourcing

We supply Ross Hill and NOV drilling parts as new, new-surplus, used-tested, and reconditioned, with condition disclosed before sale and photos on request. We are an independent surplus and sourcing company, not an authorized distributor.

FAQ

Did NOV change the Ross Hill part numbers?
Mostly no. NOV carried most Ross Hill / Hill Hayes numbering forward, so the same number usually applies. The DC control modules are the main exception, where NOV used distinct 6415- numbers.
Is your cross-reference guaranteed?
It is a reference to help you identify the right part. Always verify the exact dash number and revision against the module or nameplate label before ordering; we confirm at quote.
Can you source either the Ross Hill or the NOV number?
Yes. Send whichever number you have and we will identify the part and source it as new old stock, surplus, used-tested, or reconditioned.
Are you an authorized distributor?
No. Edmundson Industrial is an independent surplus and sourcing company, not an authorized distributor.

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Request a Quote

or send the part number to sales@edmundsonindustrial.com · (832) 975-8827 · Houston, TX. Same-day response on most requests.

Related

Send the Ross Hill or NOV number and we'll identify and source it.

Condition disclosed before sale. Same-day response on most requests.

Request a Quote