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Product Description
The Allen-Bradley 803-A8RH is a robust, Style A rotating cam limit switch designed for heavy-duty industrial machinery with repetitive cycles where shaft rotation mirrors machine motion. Featuring a right-hand shaft extension and a NEMA Type 1 enclosure, it's suitable for applications like assembly, packing, steel forming, injection molding, and punch presses. It includes a 150 RPM rotating shaft, spring-loaded cam-roller, eight cam-opened circuits, and adjustable cam segments for precise timing and dwell time control. The adjustable lobe and valley on the cam activate and deactivate circuits, respectively. Its normally-closed contacts handle 25A continuous current with AC MAKE/BREAK ratings of 150A/15A at 120V and 30A/3A at 600V, and a MAKE/BREAK power rating of 1800 VA. Timing, measured in angular degrees relative to Top Dead Center, and dwell time are internally adjustable. The unit weighs 16.3 kg (36 lbs) and measures 311.2 x 144.5 x 200 mm (12.25 x 5.69 x 7.88 inches). It is CSA, UL, and CE-certified and operates between -30 to 66C (-22 to 150F) and can be stored between -30 to 93C (-22 to 200F).
Is Your Device Showing These Signs?
The Allen Bradley 803-A8RH suffers from common failures including coil burnout due to overvoltage or inrush current, contact erosion from repetitive switching of inductive loads, and mechanical wear impacting armature movement. Troubleshooting involves checking coil resistance, inspecting contact surfaces for pitting or welding, and verifying proper spring tension. Replacement of the coil, contacts, or entire relay is often necessary to restore functionality and prevent motor control system downtime. Proper surge suppression and adherence to voltage specifications are crucial for preventative maintenance.
Technical specifications
The Allen-Bradley 803-A8RH is a heavy-duty rotating cam limit switch for industrial machinery with repetitive cycles. It features a right-hand shaft, NEMA Type 1 enclosure, eight cam-opened circuits, adjustable cam segments for precise timing, and high-current rated contacts. It's suitable for applications like assembly and steel forming, and is CSA, UL, and CE-certified.
Our Repair Process for the
803-A8RH
Our repair process for the Allen Bradley 803-A8RH relay begins with a thorough inspection, including coil resistance testing to identify burnout, contact surface examination for erosion or welding, and assessment of spring tension to ensure proper armature movement. If the coil is damaged, it is replaced with a new component meeting original specifications. Contacts exhibiting pitting or welding are replaced to ensure reliable switching. Mechanical wear affecting armature movement necessitates replacement of the entire relay unit. To prevent future failures, surge suppression devices are installed, and adherence to specified voltage parameters is enforced. This process restores the relay to full functionality, minimizing motor control system downtime.
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