Product Description
The Allen-Bradley 803-A54X Rotating Cam Limit Switch is a durable, long-lasting circuit control switch designed for repetitive industrial machinery applications where the switch's shaft movement directly corresponds to the machine's motion. Ideal for steel forming, water gate/lock systems, and injection molding, it utilizes a shaft-mounted cam to activate five circuits. Each circuit features a cam-operated, normally-closed, double-break contact. The switch has a 150 RPM rated rotating shaft with oversized ball bearings, a contact-mounted cam-roller assembly, and a keyway for shaft connection. Five independent cam operators with adjustable segments control circuit activation. As the shaft rotates, cam lobes press against the roller to activate the circuit; valleys deactivate it. Dwell time, the activation duration, is determined by lobe length, ranging from a minimum of 14 degrees to a maximum of 346 degrees, adjustable via lobe offset. This Style "B" switch features internally-adjusted dwell and timing, a customized double shaft extension, an operating temperature range of -22 to 150F (-30 to 66C), and a non-operating range of -22 to 200F (-30 to 93C). It is housed in a NEMA Type 4 and 13 enclosure and weighs approximately 11.3 kg (25 lbs) with dimensions of 211.1 x 144.5 x 200 mm (8.31 x 5.69 x 7.88 inches). It is CE, CSA, and UL certified.
Is Your Device Showing These Signs?
The Allen Bradley 803-A54X suffers from common failures including contact degradation, coil burnout, and mechanical wear impacting operational lifespan. Expect issues such as contact welding, increased resistance across contacts, and eventual motor control malfunction. Replacement of worn components, coil rewinding, and contact cleaning are necessary to restore functionality. Address these issues promptly to prevent motor damage and maintain system uptime.
Technical specifications
The Allen-Bradley 803-A54X is a robust rotating cam limit switch for industrial machinery. It uses a shaft-mounted cam to activate five circuits with adjustable dwell times (14-346 degrees) via cam lobe length. Suitable for applications like steel forming and injection molding, it features a durable design with oversized ball bearings, adjustable cam operators, and a NEMA 4/13 enclosure. This Style "B" switch has internally adjusted dwell and timing, a customized double shaft extension, and wide operating temperature ranges. It is CE, CSA, and UL certified.
Our Repair Process for the
803-A54X
Our repair process for the Allen Bradley 803-A54X begins with a comprehensive evaluation to diagnose contact degradation, coil burnout, and mechanical wear. Worn components are replaced, the coil is rewound if necessary, and contacts are meticulously cleaned to eliminate welding and reduce resistance. Functionality is restored through these precise actions, ensuring motor control malfunction is resolved. This process prevents motor damage and maintains system uptime by addressing common failures promptly and effectively.
Your Guarantee: Warranty & Lifetime Support
Your satisfaction is our top priority, and we confidently stand behind the quality of our repairs. That's why every repair service is covered by our comprehensive 24-month warranty. Furthermore, we offer lifetime phone support – if you have questions or need assistance related to our repair down the road, we're here to help. Our service commitment is straightforward: we guarantee our work, and if you're not satisfied, we will make it right. Learn More about our Repair process.
Comprehensive Repairs You Can Depend On
We take immense pride in the quality and reliability of our work. Our process goes beyond simply fixing the immediate problem. We perform a comprehensive inspection of your main board (or other equipment) and proactively replace components known to be failure-prone or showing signs of potential future failure. Before any item is returned, it undergoes rigorous functional testing to ensure it meets performance specifications and operates flawlessly. Visit our main Repair Services page to learn more.
Save Significantly
Our primary goal is to save you hundreds, or even thousands, of dollars compared to the cost of new equipment replacement. By repairing existing components, we provide an economical solution that is also eco-friendly. At Roc Industrial, our commitment to integrity and community drives our consistent growth and ensures you receive a reliable, cost-effective solution.


Please Note: Roc Industrial operates as an independent service provider and is not an authorized distributor for the manufacturers or brands mentioned. Consequently, the original manufacturer's warranty is not applicable to items repaired or sold by us. Roc Industrial provides its own 2-year warranty on all repair services performed.
Buying Options
To receive a quote within 2 hours, please provide us with the details of your requirements. Our team will promptly review your request and send you a custom offer.
Ships from Rochester, NY