EDMUNDSON INDUSTRIALOILFIELD ELECTRICAL SUPPLY
Drilling Rig Electrical · MCC bucket protection

Ross Hill 1305-2001-00 Overload Relay, GE CR324C310F9X2

Ross Hill 1305-2001-00 identifies the CR324C310F9X2 NEMA Size 1 overload relay; preserve the complete suffix and select heaters from the motor application.

Ross Hill 1305-2001-00 identifies the CR324C310F9X2 NEMA Size 1 overload relay; preserve the complete suffix and select heaters from the motor application. Use the complete installed identifiers and equipment ratings as the ordering reference. Availability, condition, price, and lead time are confirmed for each request.

Independent supplier. Edmundson Industrial is not appointed, endorsed, or sponsored by any manufacturer named on this page. Ross Hill, NOV, GE, ABB and other manufacturer names and part numbers appear here for identification only. Their use does not imply authorization, endorsement, or any current manufacturer relationship. Availability, condition, price, and lead time are confirmed for each request.

Identification details for Ross Hill 1305-2001-00
RHCC part number1305-2001-00
Part descriptionOL RELAY MS1
Manufacturer referenceCR324C310F9X2
GE seriesCR324, open NEMA overload relay
Published NEMA size spanSizes 00, 0 and 1
Published auxiliary contact1NC
Series characteristicsPanel mounting, manual reset, for 300 line full voltage magnetic starters
Current ratingNone until heaters are fitted

The relay has no amp rating, and that is not a gap in our research

People ask what current this overload relay is rated for and the honest answer is that the question does not apply to the block on its own. A CR324 is a mechanism. Three heaters are fitted into it, one per pole, and the heaters are what carry motor current and decide the trip point.

That is why ordering a relay without settling the heaters leaves a bucket that will close a contactor and protect nothing in particular. If your relay arrived with heaters already in it, they were chosen for whatever motor it came off, not for yours.

Manual reset is a design decision, not a fault

The CR324 series is described as manual reset. After a trip, somebody has to go to the bucket and press the reset. On a rig that is usually deliberate, because a motor that has tripped on overload should be looked at rather than restarted automatically at three in the morning.

Also searched as

1305-2001-00 · 1305200100 · CR324C310F9X2 · GE CR324 overload relay · NEMA size 00 0 1 overload block · 300 line overload relay

Each starter position has its own overload relay number, and they are not the same reference.

Ross Hill 1305-2001-00 part-number comparison
RHCC numberPart descriptionManufacturer reference
1305-2001-00OL RELAY MS1CR324C310F9X2
1305-2005-00OL RELAY-MS2CR324D310FX
1305-2006-00OL RELAY-MS3CR324E310FX
1305-2007-00OL-RELAY-MS4CR324F310FX

What to send with your request

Tell us about the motor as well as the relay, because the heaters are the half that matters.

  • The motor full load current from the motor nameplate
  • The heater number currently fitted, if the existing heaters are legible
  • The starter the relay works with, and its NEMA size
  • Whether the complaint is repeated tripping, a relay that will not reset, or physical damage
  • Quantity required, the condition you can accept, and your need-by date

We do not need a purchase order to answer an identification question. Send the number and the photograph and we will tell you what we can establish.

Related

Questions we get on this number

What current is Ross Hill 1305-2001-00 rated for?
The relay block has no current rating on its own. Three heaters are fitted into it, one per pole, and the heaters carry motor current and set the trip point. Ordering the relay without settling the heaters leaves the protection undecided.
What NEMA sizes does CR324C310F9X2 cover?
Independent listings publish it for NEMA sizes 00, 0 and 1, with a 1NC auxiliary contact. The CR324 series is a panel-mounting manual-reset open NEMA overload used with 300 line full voltage magnetic starters.
Does it reset automatically?
The series is described as manual reset, so after a trip somebody has to go to the bucket and reset it. On drilling equipment that is usually deliberate, because a motor that tripped on overload should be looked at rather than restarted automatically.
What is Ross Hill 1305-2001-00?
Ross Hill 1305-2001-00 identifies the CR324C310F9X2 NEMA Size 1 overload relay; preserve the complete suffix and select heaters from the motor application.

Availability and quote

Request a quote by emailing sales@edmundsonindustrial.com or by calling (832) 975-8827

Identification checkpoint

For RHCC 1305-2001-00, confirm manufacturer reference: CR324C310F9X2; ge series: CR324, open NEMA overload relay; series characteristics: Panel mounting, manual reset, for 300 line full voltage magnetic starters. Use the installed label and complete suffix before treating another item as equivalent.

Want a quick quote for 1305-2001-00?

Fill out your contact info here, and we'll get a quote sent to you ASAP!