Eaton / Cutler-Hammer 6702ED584: DC Contactor
The 1800 A DC contactor most often found inside Ross Hill SCR bays: an Eaton part, catalogued by Ross Hill as 0401-0021-00.
Independent sourcing, not an authorized distributor. Eaton, Cutler-Hammer, Ross Hill, NOV, and other manufacturer names and part numbers are used for reference only. Supplied as new-surplus, used-tested, or reconditioned, with condition disclosed before sale.
| Manufacturer part number | 6702ED584 |
|---|---|
| Manufacturer | Eaton / Cutler-Hammer |
| Ross Hill part number | 0401-0021-00 |
| Type | DC contactor |
| Rating on file | 1800 A, 74 VDC coil |
| Found in | Ross Hill / NOV SCR bays |
| Condition | New-surplus, used-tested, reconditioned |
Also searched as
6702ED584 · 6702ED-584 · 6702 ED 584 · 0401-0021-00 · 0401002100 · Cutler-Hammer 6702ED584 · Eaton 6702ED584 · Ross Hill SCR bay contactor · 1800 amp DC contactor
This is an Eaton part, not a Ross Hill part
Worth stating plainly, because it is the most common misunderstanding on this number. The 6702ED584 is an Eaton / Cutler-Hammer DC contactor. Ross Hill specified it into its SCR bays and catalogued it under a Ross Hill number, 0401-0021-00, but Ross Hill did not build it.
That distinction has practical consequences. It means the part has a life independent of the Ross Hill parts chain, and it means a search against the Eaton number will usually turn up more than a search against the Ross Hill number. If you have only been quoted against 0401-0021-00, try 6702ED584.
Read the suffix: the coil voltage changes
This is the identification risk that actually costs people money on this family. The base number and the suffixed variants share a frame and a current rating but differ in coil voltage.
| Number | What is recorded | Note |
|---|---|---|
| 6702ED584 | DC contactor, 1800 A, 74 VDC coil. | this page |
| 6702ED584-2 | Same 1800 A frame, listed by distributors with a 115 VDC coil. | Different coil voltage |
| 6702ED587-2 | DC contactor, 3000 A, 74 VDC. | Different current rating |
| 6702ED621-2 | DC contactor, 1000 A, 125 VDC, reversing. | Different rating and coil |
A contactor with the wrong coil voltage will either fail to pull in or run hot and fail early. Read the whole number off the nameplate, including any suffix, and tell us the coil voltage your bay actually supplies.
Related Ross Hill contactor numbers
Several DC contactors appear in and around Ross Hill SCR bays. They are not the same item and should not be treated as substitutes for one another.
| Number | Manufacturer | What is recorded |
|---|---|---|
| 0401-0021-00 | Eaton / Cutler-Hammer | The Ross Hill number for the 6702ED584. Same item as this page. |
| 0401-0008-01 | Eaton / Cutler-Hammer | DC contactor, 1000 A 74 VDC, reversing. |
| 0401-0025-00 | Eaton / Cutler-Hammer | DC contactor, 3000 A 125 VDC, rebuilt. Expect a 6702ED-family number on the unit. |
| 0100-0389-02 | Ross Hill | Ross Hill 1800/C contactor, 1800 A 74 VDC. Same headline rating as the 6702ED584 and a genuinely different part: see the note below. |
Symptoms that point here
| What you are seeing | What it usually indicates |
|---|---|
| Contactor will not pull in | Coil, coil voltage, or control circuit: verify the coil rating first |
| Contactor chatters or drops out under load | Coil supply or worn contacts |
| Heavy pitting or welding on the tips | Contacts at end of life, or an interruption duty problem |
| Replacement fitted and it runs hot | Wrong coil voltage variant: check the suffix |
| Contactor chatter, failure to pull in, or welded contacts | Coil voltage varies by suffix, and do not swap with Ross Hill 0100-0389-02: same headline rating, different part |
Nameplate
We verify the full number, including suffix, and the coil voltage against the physical unit before quoting, and send photos of the nameplate on the unit being offered.
What to send us
These are the details that let us identify the right unit instead of guessing at it.
- The complete number as it reads on the nameplate, including any suffix
- The coil voltage your bay supplies
- Current rating and pole configuration if visible
- Whether the application is reversing or non-reversing
- Rig and drive it came out of
- A photo of the nameplate if you can take one
- Quantity and your need-by date
Condition & sourcing
Supplied as new-surplus (unused, from the secondary market), used-tested, or reconditioned, with condition disclosed before sale and photos on request. Availability on legacy Ross Hill and NOV equipment changes constantly: send the number and we will tell you what we can actually find.
Starting from a symptom: a gate firing pulse failure, a misfire, phase loss, one leg dead? The SCR Drive Fault Finder maps what you are seeing to the suspect module and part number.
FAQ
Is 6702ED584 a Ross Hill part?
What is 6702ED584 rated at?
What is the difference between 6702ED584 and 6702ED584-2?
What is the Ross Hill number for this contactor?
Do you supply the other contactors in the bay?
Availability & Quote
Condition disclosed before sale. Photos on request. Response timing is confirmed with the request.
Related
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