Get now: Allen-Bradley 1769-PA4K Conformal Coated Power Supply Module
Atlantechdrives provides you the 1769-PA4K, a high-performance AC input power supply designed for the CompactLogix platform. The «K» suffix indicates that this module features a conformal coating, providing an extra layer of protection for internal circuitry against harsh industrial environments, including humidity, salt spray, and corrosive chemical vapors.
- Input Voltage: 85-265V AC / 170-265V AC (Switch Selectable)
- Output Current: 4.0A @ 5.1V DC; 2.0A @ 24V DC
- Environmental Protection: Conformal Coated (Series K)
- Power Consumption: 200 VA maximum
- Operating Temperature: 0°C to 60°C (32°F to 140°F)
- Inrush Current: 25A maximum
Technical Performance: Reliable Power for Harsh Environments
Purchase now the 1769-PA4K to ensure the survival of your control system in demanding climates. This power supply is technically engineered to provide doubled the current capacity of the standard PA2 modules, delivering a robust 4.0 Amps to the 5V backplane. This is critical for high-density I/O racks where multiple 1769 expansion modules are utilized. The conformal coating is a specialized chemical film applied to the electronic boards, which prevents electrochemical migration and corrosion of the fine-pitch components. When you secure the 1769-PA4K, you are investing in a power engine that maintains the deterministic execution of your Logix5000 controller by providing filtered, ripple-free DC rails even in the presence of line-side transients and industrial atmospheric contaminants.
Installation Advice: Managing Heat in Coated Modules
When installing the 1769-PA4K, thermal management is the primary priority. Because the conformal coating can act as a slight thermal insulator, ensuring proper convection airflow within the cabinet is vital. Maintain the recommended 50mm (2-inch) clearance on all sides. Furthermore, always verify the voltage selection switch (120/240V) before applying power; an incorrect setting will trigger the internal fuse. Sourcing your 1769-PA4K from Atlantechdrives ensures you receive a factory-certified «K» series unit with intact coating integrity, essential for long-term reliability in wastewater treatment or chemical processing plants.
Maintenance and Signal Stability
The 1769-PA4K features a green «PWR» LED to signify healthy DC output rails. Maintenance should include periodic inspection of the terminal block for tightness. In environments where the conformal coating is necessary, we also recommend using protective caps for unused ports on the adjacent CPU to maintain a consistent level of protection across the rack. Sourcing an authentic 1769-PA4K from Atlantechdrives provides the hardware reliability required for 24/7 mission-critical uptime.
FAQs
Q: What is the benefit of the «K» version (1769-PA4K)?
A: The «K» version is conformal coated, protecting the module from corrosion in humid or chemically aggressive environments.
Q: Can the 1769-PA4K power an entire expansion bank?
A: Yes, it is designed to be the primary power source for local or remote I/O banks, supporting up to 8 modules depending on their current draw.
Do you need more references from this brand? Explore our full catalog of Allen-Bradley here.
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