Power Entry Modules A compact, integrated solution for bringing AC power into electronic equipment while simplifying wiring, improving safety, and saving panel space. Key benefits Simplifies assembly: Combines AC inlet, switch, fuse holder, and optional EMI/RFI filter into a single panelmounted unit to reduce parts, wiring, and assembly time. Improves safety and compliance: Provides a standardized, enclosed entry point for mains power that supports fuse protection and switched isolation, helping meet safety and regulatory requirements. Saves space and design effort: Compact, integrated form factor reduces panel cutouts and internal routing compared with separate components. Enhances reliability and maintainability: Designed for secure connections, robust contact materials, and accessible fuse/switch locations to speed servicing and reduce downtime. Reduces EMI problems: Modules with builtin filters minimize conducted interference and simplify EMC design. Primary functions Provide a protected and switchable AC inlet for mains power. House fuse holders or circuit protection for overcurrent safeguarding. Offer a manual disconnect (rocker or rockerwithindicator) for safe power isolation. Optionally include EMI/RFI filtering to reduce conducted noise on the supply. Compatibility and form factor Designed for panel mounting with standardized cutout sizes to fit common enclosures and chassis. Accepts standard mains cords and connectors depending on inlet type. Compact layouts reduce the number of openings and simplify frontpanel design. Available in variants that support different current ratings and fuse types; choose the variant that matches your device's current and safety requirements. Material and performance considerations Constructed to withstand routine mechanical and electrical use; mechanical parts (switch, inlet, fuse holder) are designed for repeated operations. Contacts and terminals are intended for reliable current transfer and secure wiring; terminal types may include solder, quickconnect, or screw connections depending on the selection. Units with EMI filters reduce conducted interference and can help meet EMC limits without separate linefilter components. Select modules rated for the required voltage, current, and fuse type for safe, longterm performance. Practical use scenarios Industrial control panels: multiple discrete components with a single entry module to simplify wiring, speed assembly, and provide a clear service point for power and fusing. Medical or laboratory equipment: Centralize mains entry with a switch and fuse holder to meet serviceability and safety needs while allowing optional line filtering to reduce interference. Desk and rack electronics: Use compact panelmounted modules to provide a neat front or rearpanel power entry that accepts standard power cords and enables quick field servicing. How to choose the right module Confirm required voltage and current ratings and the appropriate fuse type for your application. Decide whether you need builtin EMI/RFI filtering based on your EMC needs. Verify mechanical panel cutout dimensions and terminal type to ensure compatibility with your enclosure and wiring practices. Choose a module variant that provides the required combination of inlet, switch, and fuse holder features to minimize additional components. Installation and maintenance tips Follow the panel cutout and mounting instructions provided by the supplier for secure installation. Torque terminals and screws to specified values to ensure reliable electrical connections. Use the specified fuse type and rating when servicing; label fuse and switch positions for quicker maintenance. If using filtered modules, consider grounding practices and chassis bonding to maximize filter effectiveness. Why use a power entry module Consolidates multiple functions into one reliable, serviceable component. Streamlines product assembly and reduces the potential for wiring errors. Makes compliance and servicing easier by providing a standardized, accessible power entry point.