Allen-Bradley 440N - Listingallen-Bradley Unique Coded Non-Contact Switch -Z21U17H Sens. Dist 10Mm

Allen-Bradley 440N: Unique Coded Non-Contact Switch with 10 mm Sensing Distance

Designed for demanding industrial and commercial environments, the Allen-Bradley 440N delivers precise, non-contact switching with a dedicated code (Z21U17H). This genuine component is purpose-built for control panels, machinery, and industrial automation systems, offering dependable performance where reliability matters most.

• Coded non-contact sensing: Eliminates mechanical wear and reduces maintenance downtime by sensing without physical contact, improving lifespan and uptime in busy production lines.
• 10 mm sensing distance: Provides forgiving alignment during installation and retrofit projects, making it easier to integrate into existing layouts and tight spaces.
• Unique coding for robust operation: The Z21U17H code helps prevent false triggers in environments with vibration, dust, or electrical noise, delivering consistent, accurate signals to your control system.
• Industrial-grade compatibility: A genuine Allen-Bradley part designed to slot into control panels, machinery, and industrial automation setups, ensuring seamless performance with compatible Allen-Bradley components.
• Ideal for maintenance, repair, and upgrades: This listing is specifically suited for retrofit projects and spare parts inventories where compatible, hard-to-find Allen-Bradley components are required.

Perfect use cases

Think of the 440N as the smart upgrade for lines that demand dependable, contactless sensing. Ideal scenarios include retrofitting aging equipment, integrating into new automation lines, and adding secure sensing to conveyors, packaging systems, presses, and other process equipment. If you’re coordinating a plant-wide upgrade or sourcing a replacement that aligns with existing Allen-Bradley hardware, this switch is designed to meet those needs without compatibility guesswork.

Why this switch stands out

Compared with traditional mechanical or simple proximity sensors, the 440N’s coded, non-contact design reduces wear and maintenance frequency while delivering stable performance across cycles and varying operating conditions. The 10 mm sensing distance offers installation flexibility, and the dedicated Z21U17H coding minimizes misreads caused by misalignment or ambient interference — a practical advantage in busy control panels and automated systems.

Installation and care tips

To maximize reliability, verify that the code (Z21U17H) and the 10 mm sensing distance match your system requirements. Plan installation with clean alignment of the sensing face to the target, and document the 440N’s coding in your maintenance logs to simplify future replacements or upgrades. Rely on this component as part of a broader strategy to simplify spares management and keep critical automation running smoothly.

Ready to upgrade your control panels and machinery with a dependable Allen-Bradley 440N coded non-contact switch? Add this genuine component to your cart and experience the repeatable, low-maintenance performance central to modern industrial automation.