24mm RJ45 8P8C Male-Male Connector for ABB ACS510 ACS550 Control Panel (Port Butt)

24 mm RJ45 Male-Male Port-Butt Plug for ABB ACS510 and ACS550 Drives

This network RJ45 port-butt connector is a 24 mm transparent 8P8C male-to-male modular plug made to dock an ABB ACS-series control panel onto the drive. It is not a crimp-on Ethernet crystal head and it is not a 26 mm or 33 mm cable plug. Both ends are male 8P8C. One end enters the keypad, the other enters the drive, and the 24 mm body sets the stack height so the assistant panel sits flush on ACS510 and ACS550 frames.

Maintenance buyers search this part as an ACS550 RJ45 connector, ACS510 keypad plug, or a replacement for ABB 3AUA0000024884. That OEM coupler is specified as a male/male RJ45, 24.1 mm long, for connecting a control panel to ACS310, ACS355, and ACS550 drives. This 24 mm transparent plug is built for the same pocket. Always confirm latch travel on your panel revision before a production change. For remote door mounting instead of on-drive docking, use a ACS-CP extension cable and a panel-mount RJ45 coupler rather than this port-butt.

An adjustable-speed drive from the ACS family runs pumps, fans, and conveyors in HVAC and process plants. The operator still needs the local ABB assistant panel (ACS-CP-A / ACS-CP-C and related ACS-CP units) to set macros, copy parameters, and read faults. That panel mates to the drive through two female RJ45 jacks facing each other. A male-to-male 8P8C butt plug is the mechanical link. Lose the OEM coupler and the keypad will not seat. This SKU puts that link back in the bin at a bulk price.

What “Port Butt” Means on an ACS Drive

Port butt is the factory term for a double-ended male plug that joins two jacks face to face. There is no cable, no IDC, and no load bar. Eight gold-selective contacts run straight through the 24 mm housing. When the ACS-CP panel is pressed onto the drive, both latches click and the panel is powered from the drive. Pull the panel and the same plug stays with the keypad or the drive, depending on which latch you release first.

Length is the specification that fails first if you substitute a generic adapter. A 22 mm office gender changer leaves a gap. A 26 mm board-to-board crystal adapter can bottom out on the ACS bezel and stress the jack solder joints. ABB’s own 3AUA0000024884 is 24.1 mm. This plug is tooled to that 24 mm class so the panel sits flat on ACS510 and ACS550, and on ACS310 / ACS355 / ACS350 / ACH550 units that share the same control-panel interface. If you need a longer stack for a custom door pocket, see our 42 mm male-male inverter adapter. If you are terminating a keypad cable instead of docking a panel, use the 26 mm crystal head.

Materials and electrical class

The body is transparent polycarbonate so a technician can see that all eight blades are present and that neither latch is cracked before the panel goes back on a live drive. Contacts are 0.30 mm brass with selective gold over nickel. The through path is pin 1 to pin 1. Typical ratings for this family: 1.5 A at 25 °C, 125 VAC signal class, contact resistance ≤ 40 mΩ, insulation ≥ 1,000 MΩ at 500 VDC (EIA-364-21C), dielectric 1,000 VAC RMS or 1,500 VDC for one minute (EIA-364-20B), retention ≥ 57.8 N (EIA-364-23B), durability ≥ 1,000 mating cycles (EIA-364-98). Operating range −20 °C to +70 °C matches enclosed ACS cabinets in pump rooms and air handlers.

This is a communication and keypad link only. It does not carry motor current. Route motor leads away from the panel pocket and keep the drive cover in place so the plug is not used as a handle.

Where buyers use this 24 mm coupler

Typical jobs: restoring an ACS550 that arrived without the panel coupler; kitting ACS510 HVAC packages so every drive ships with a spare dock; field replacement when a latch breaks on a rooftop unit; OEM assembly of private-label cabinets that use ACS355 or ACS550 as the motor controller; spare-parts bags for service contractors who carry ACS-CP-A panels. The same 8P8C butt plug is also used when a test bench needs a quick panel swap without building a CAT5 jumper.

Need the rest of the operator kit? Add an ACS-CP control panel, a VFD RJ45 communication cable, or a VFD inverter accessory pack on the same PO.

Technical Specifications

Send the drive type code (for example ACS550-01-08A8-4) and the panel model to our engineering desk if you need a fit sample before a stock PO. We can mark inner boxes with your MRO part number.

How MRO and OEM Buyers Specify This Part

Write the PO as: RJ45 8P8C male-male port-butt, L=24 mm, transparent, for ACS510/ACS550 control panel, compatible with 3AUA0000024884. Do not write “crystal head” or “26 mm” — those are different SKUs and will not dock the ACS panel correctly. HVAC OEMs usually buy a spare coupler in every drive carton. Service contractors buy loose pieces for the van. Panel shops that remote-mount the keypad should not use this part; they need the 3 m CAT5 kit, not a 24 mm butt plug.

Incoming check

Measure overall length (24 mm class). Confirm both ends are male 8P8C with working latches. Confirm eight blades are visible through the crystal body and that a panel seats flush on an ACS550 or ACS355 sample. Continuity should read pin 1–1 through pin 8–8. Reject any lot with short or long bodies mixed in from 22 mm or 26 mm stock.

Frequently Asked Questions

Is this a genuine ABB 3AUA0000024884?

No. It is a compatible 24 mm male-to-male RJ45 port-butt plug tooled for the same ACS310 / ACS355 / ACS510 / ACS550 control-panel pocket as 3AUA0000024884. Use it as an MRO or OEM alternative. If your quality plan requires a genuine ABB bag and 2D code, buy the OEM part number from ABB distribution.

Will it fit ACS510 and ACS550 only?

Those two are the drives named on this listing because they share the ACS-CP panel dock. The same 24 mm coupler is commonly used on ACS310, ACS350, ACS355, and ACH550 when the panel is an ACS-CP or ACH-CP unit with a rear RJ45. It is not for ACS580 / ACS880 door kits that use a different mounting hardware set. Check the hardware manual if you are on a later ACS family.

How is this different from your 26 mm crystal head?

The 26 mm crystal head is a single male plug that you crimp onto a cable. This 24 mm part is a finished male-to-male adapter with no cable and no crimp. One joins a wire to a jack. This one joins two jacks. Mixing them on a BOM is the most common purchasing error we see.

Can I use a CAT5 gender changer from an IT catalog?

Only if the body is 24 mm class and both latches clear the ACS bezel. Most office male-male couplers are the wrong length or use a plastic spine that cracks after a few panel pulls. This plug is built for the drive pocket and for repeated panel service.

Does it pass Ethernet or only the keypad protocol?

Mechanically it is an 8P8C through adapter, so it will pass eight conductors. On ACS510/ACS550 the dock is the ABB panel link (parameter, display, and copy functions), not a plant Ethernet port. Do not treat this pocket as a Modbus TCP jack unless the drive manual says that port is Ethernet.

The panel rocks or will not latch. What should I check?

Confirm you have the 24 mm SKU, not 22 mm or 26 mm. Confirm both jacks are free of broken latch tabs. Confirm the panel is an ACS-CP type for that drive, not an ACS-AP-I or Bluetooth assistant from a later series. If the drive uses a remote-mount kit, the door coupler is a female-female, not this male-male butt plug.

What pack and lead time should we plan?

Loose pieces for MRO and inner boxes for OEM kitting are standard. Sample packs ship quickly for first-article fit on your ACS550. Production lots in the low thousands typically follow a two-week window; forecasted HVAC season builds can be held as a buffer.

Can you print our spare-part number on the bag?

Yes. Private-label bags, your 3AUA cross-reference printed as “fits 3AUA0000024884”, and mixed cartons with other VFD inverter accessories are available. Ask the sales desk for a print proof.

Ready to quote? Send annual volume, whether you need loose plugs or kitted bags, and the drive list (ACS510, ACS550, ACS355, or mixed). We will return samples and tiered pricing.