Allen Bradley Bulletin 500 Line Replacement Contact Kits
BRAH Electric lists 6 aftermarket replacement parts for Allen Bradley Bulletin 500 Line equipment, cross-referenced to 18 OEM part numbers: Contact Kits (6). Each of those OEM part numbers has its own listing next to the BRAH part that replaces it, so the results below count both.
Type series in this family include 404 (5) and 424 (1). Amperage ratings: Contact Kits 18A to 270A. For example, B40410-331-51 replaces 40410-331-51 and B40410-331-52 replaces 40410-331-52.
How do I find the replacement for my Allen Bradley Bulletin 500 Line part?
To find a part, search for the OEM part number printed on the part you are replacing, or use the cross-reference table at the bottom of this page, which lists every BRAH part beside the part numbers it replaces. BRAH parts carry a 2-year warranty from the date of invoice; contact kits carry a 6-month warranty. In-stock items ordered before 3:00 PM Pacific ship the same business day. Need help confirming a match? Call (855) 355-2724.





Why BRAH Electric?
We're the industry leader in direct replacement.











Need Assistance?
Our support team is here to assist you with any inquiries or issues. Get in touch for personalized support.
Contact us

30-day returns
Returns accepted within 30 days of shipment with an RMA; a 25–50% restocking charge applies.






Allen Bradley Bulletin 500 Line part number cross-reference
Contact Kits
Type 404, B404
| BRAH part | Rating | OEM part numbers replaced |
|---|---|---|
| B40410-331-51 | 18A | 40410-331-51AB50LCK159 |
| B40410-331-52 | 27A | 40410-331-52AB51LCK161 |
| B40420-322-51 | 45A | 40420-322-51AB52LCK162 |
| B40430-300-51 | 90A | 40430-300-51AB53LCK163 |
| B40440-300-51 | 135A | 40440-300-51AB54LCK164 |
Type 424, B424
| BRAH part | Rating | OEM part numbers replaced |
|---|---|---|
| B42450-805-01 | 270A | 42450-805-01AB55LCK166 |
