Product Description
The Allen-Bradley 803-F412 is an F Series Bulletin 803 Rotating Cam Limit Switch featuring externally adjustable timing and dwell. Timing, the duration of circuit activation, is determined by the cam's angle relative to the keyway. Dwell, similar to timing, is controlled by the size and offset of the cam lobes, ranging from 12 to 348 degrees, and is also externally adjustable during operation. The switch includes two 10A-rated snap action contacts (one N.C., one N.O.), 2-12 independent cam operators, a standard left shaft extension (max 150 RPM), and a Type 1 or 13 enclosure.
Is Your Device Showing These Signs?
The Allen Bradley 803-F412 encounters common issues such as coil burnout due to overvoltage or inrush current, resulting in contactor failure. Contact erosion from repetitive switching of inductive loads causes operational malfunction. Mechanical wear of moving parts leads to sluggish response or complete failure to engage. Terminal block damage from improper wiring or excessive torque is a frequent problem. Environmental contamination, including dust and moisture, degrades insulation and accelerates corrosion, impacting performance.
Technical specifications
The Allen-Bradley 803-F412 is a Bulletin 803 Rotating Cam Limit Switch (F Series) with externally adjustable timing and dwell. Dwell, controlled by cam lobes (12-348 degrees), and timing are both adjustable during operation. It features two 10A-rated snap action contacts (N.C. and N.O.), 2-12 independent cam operators, a left shaft extension (max 150 RPM), and a Type 1 or 13 enclosure.
Our Repair Process for the
803-F412
Our repair process for the Allen Bradley 803-F412 begins with a comprehensive inspection to diagnose the specific failure, including coil burnout, contact erosion, mechanical wear, terminal block damage, or environmental contamination. Upon identifying the issue, we proceed with component-level repairs, replacing damaged coils, contacts, or terminal blocks with OEM-specified parts. Mechanical components are refurbished or replaced to ensure proper engagement and response time. The contactor is thoroughly cleaned to remove any environmental contaminants, and insulation is tested to guarantee optimal performance. Finally, the repaired 803-F412 undergoes rigorous testing under load conditions to verify operational integrity and adherence to original specifications before being returned.
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
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Ships from Rochester, NY