Ross Hill 1305-2005-00 Overload Relay, CR324D310FX

Ross Hill 1305-2005-00 identifies the GE/ABB CR324D310FX NEMA Size 2 overload relay. ABB Size 2 renewal instructions identify this exact reference as the three-heater overload relay with one normally closed contact for the CR306 starter context. Heater elements are selected separately from motor and application data.

Independent supplier. Edmundson Industrial is not appointed, endorsed, or sponsored by Ross Hill, NOV, GE, ABB, Mersen, or any other manufacturer named on this page. Names and part numbers appear for identification only. Availability, condition, price, and lead time are confirmed for each request.

Part-number identification

CR324D310FX is the full relay reference. Do not remove the final X or replace the D frame with another NEMA size. The installed heaters, reset hardware, terminal arrangement, and motor data complete the application record.

The complete installed label remains the ordering reference. Match the part number, electrical ratings, physical interface, and circuit duty before approving a replacement.

The relay and heaters perform one coordinated job

The overload block accepts three motor-specific heaters. The CR123C303B heater page identifies one exact heater code, but heater selection still begins with the motor full-load current, service factor, duty, enclosure, ambient conditions, and the applicable ABB table.

Overload protection is not fault protection

The relay responds to sustained motor overcurrent through its heater elements. The upstream breaker or motor-circuit protector addresses high fault current. Record both devices when reviewing a starter so the two protection functions remain coordinated.

Reset hardware must operate the replacement relay

MCC bucket doors often use an external reset linkage to reach the relay. Confirm the reset shaft, lever, travel, mounting position, and access before ordering. A correct relay frame that cannot be reset through the installed hardware is not a complete fit.

Inspect all three heater positions

Photograph every heater code and terminal before removal. Mixed heater markings, overheated clips, loose terminals, cracked insulation, or an unevenly heated phase need to be addressed as part of the repair, not hidden by replacing only the relay block.

Also searched as

1305-2005-00 · 1305200500 · CR324D310FX · GE Size 2 overload relay · ABB CR324D310FX · CR306D overload relay

What to send with your request

Identify the relay frame, every heater, the reset mechanism, and the motor load.

• Complete RHCC and CR324 overload-relay numbers
• Photographs of the relay label, three heater markings, terminals, and reset
• Starter catalog number, NEMA size, enclosure, and bucket arrangement
• Motor voltage, phase, horsepower, full-load current, and service factor
• Ambient, duty, upstream protective device, and reported trip behavior
• Quantity required, acceptable condition, and need-by date

A purchase order is not required for an identification review. Send the complete numbers and clear equipment photographs so the quoted item can be checked against the application.

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