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Allen-Bradley 440G-EZS21STL05H electromagnetic safety interlock switch

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Allen-Bradley 440G-EZS21STL05H

by Allen-Bradley

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OverviewThe Allen-Bradley 440G-EZS21STL05H is an advanced electromagnetic safety interlock switch engineered for peak protection in demanding industrial settings. This robust component is vital for safeguarding personnel and preventing unauthorized entry to dangerous machinery, ensuring adherence to the highest safety protocols. Operating with a dependable 24V DC power-to-lock function, this switch guarantees that machine guards remain firmly engaged until power is deliberately disconnected, fulfilling stringent PLe safety requirements. With an impressive 500N holding force, the 440G-EZS21STL05H delivers unwavering and powerful locking capabilities, making it essential for a wide range of applications, including sophisticated machine guarding systems, advanced automation processes, and critical access control solutions. Its integrated Micro M12 8-pin connector allows for exceptionally rapid and simple integration into both new and existing safety control infrastructure, significantly reducing installation time and complexity. Constructed from durable, industrial-grade materials, this switch is designed to withstand the rigors of harsh operating conditions, promising long-term reliability and consistent performance.Key Features Advanced Electromagnetic Safety Interlock: Provides superior machine guarding, enhancing overall safety and supporting strict compliance with industrial regulations. PLe Performance Level Safety Rating: Meets the most rigorous international safety standards, ensuring optimal protection for personnel and equipment. 24V DC Power-to-Lock Operation: Delivers uncompromising security by keeping safeguards locked until power is intentionally removed, preventing premature access. Exceptional 500N Holding Force: Guarantees a powerful and steadfast locking mechanism, resisting tampering and maintaining integrity even under stress. Effortless Micro M12 8-Pin Connectivity: Designed for rapid and hassle-free integration into diverse safety circuits and automation systems. Rugged Industrial-Grade Construction: Built to endure challenging operational conditions, offering extended durability and dependable performance in tough environments. Optimized for Machine Guarding: Specifically engineered to prevent accidental or unauthorized access to dangerous machinery, enhancing workplace safety. Technical Specifications Model: 440G-EZS21STL05H Product Type: Electromagnetic Safety Switch / Interlock Safety Rating: PLe (Performance Level e) Operating Voltage: 24V DC Holding Force: 500N Locking Mechanism: Power to Lock Connector Type: Micro M12, 8-Pin Application Focus: Industrial safety, machine guarding, automation system protection, access control Applications High-Risk Machine Guarding Systems: Critical for ensuring operator safety and preventing access to hazardous moving parts in manufacturing and processing plants. Automated Production Lines: Integrates seamlessly into automated cells and robotic workzones to maintain safety zones and controlled access. Industrial Access Control Points: Provides secure locking mechanisms for gates, doors, and covers leading to restricted areas within industrial facilities. Packaging and Assembly Machinery: Ideal for protecting personnel during maintenance or operation of packaging and assembly equipment. Heavy-Duty Equipment & Robotics: Offers robust protection in highly dynamic and potentially dangerous environments involving heavy machinery and industrial robots. Material Handling Systems: Ensures safety interlocks on conveyors, lifts, and other material handling equipment to prevent accidents. Why ChooseWith its PLe rating, the 440G-EZS21STL05H meets the most stringent global safety requirements, providing peace of mind for operators and compliance managers. The 24V power-to-lock mechanism ensures guard integrity, enhancing overall operational security.Order NowUpgrade your industrial safety protocols today with the Allen-Bradley 440G-EZS21STL05H. Contact us for pricing and availability.FAQWhat is the primary function of the 440G-EZS21STL05H?Its primary function is to provide an electromagnetic safety interlock, ensuring machine guarding and preventing unauthorized access to hazardous machinery.What is the safety rating of this device?The device holds a PLe (Performance Level e) safety rating, signifying compliance with rigorous international safety standards.What is the holding force of the interlock?It offers an exceptional 500N holding force, providing a powerful and secure locking mechanism.How is the 440G-EZS21STL05H integrated into systems?It features an integrated Micro M12 8-pin connector, facilitating easy and rapid integration into safety circuits and automation systems.

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PRODUCT DETAILS

Allen-Bradley 440G-EZS21STL05H

Overview

This is a genuine Allen-Bradley component. PalmPartsSolution stocks it in new, refurbished, and surplus condition with tested warranty and same-day shipping on in-stock units.

Whether you are sourcing a like-for-like replacement for an existing installation, an emergency spare to keep a line running, or a qualified part for a new build, our team can confirm availability, revision, and lead time before you order.

Key Features

  • Genuine Allen-Bradley catalog part
  • Tested before shipment
  • Backed by PalmPartsSolution warranty
  • Cross-reference and revision assistance available
  • Compatible with the broader Allen-Bradley automation ecosystem

Compatibility

When ordering, match the full catalog/part number, hardware revision, and firmware revision called out by your Allen-Bradley equipment. Where applicable, confirm:

  • Input/output voltage and current rating
  • Communication protocol and network role
  • Mounting form factor and footprint
  • Operating temperature, humidity, and IP rating
  • Required certifications (UL, CE, ATEX, marine, etc.)

Not sure which revision you need? Send us the catalog number on the nameplate and we will confirm the correct match.

Replacement Information

Three ways to source this part through PalmPartsSolution:

  1. Exact replacement — same Allen-Bradley catalog number, new or refurbished, tested and warrantied
  2. Form-fit-function equivalent — alternate revision or build that drops in without code changes
  3. Engineered migration — current-generation Allen-Bradley platform with documented conversion notes

Contact our engineering team if you need help choosing between these tracks.

Technical Specifications

  • Model: 440G-EZS21STL05H
  • Product Type: Electromagnetic Safety Switch / Interlock
  • Safety Rating: PLe (Performance Level e)
  • Operating Voltage: 24V DC
  • Holding Force: 500N
  • Locking Mechanism: Power to Lock
  • Connector Type: Micro M12, 8-Pin
  • Application Focus: Industrial safety, machine guarding, automation system protection, access control

Applications

  • High-Risk Machine Guarding Systems: Critical for ensuring operator safety and preventing access to hazardous moving parts in manufacturing and processing plants.
  • Automated Production Lines: Integrates seamlessly into automated cells and robotic workzones to maintain safety zones and controlled access.
  • Industrial Access Control Points: Provides secure locking mechanisms for gates, doors, and covers leading to restricted areas within industrial facilities.
  • Packaging and Assembly Machinery: Ideal for protecting personnel during maintenance or operation of packaging and assembly equipment.
  • Heavy-Duty Equipment & Robotics: Offers robust protection in highly dynamic and potentially dangerous environments involving heavy machinery and industrial robots.
  • Material Handling Systems: Ensures safety interlocks on conveyors, lifts, and other material handling equipment to prevent accidents.

Why Choose the 440G-EZS21STL05H?

With its PLe rating, the 440G-EZS21STL05H meets the most stringent global safety requirements, providing peace of mind for operators and compliance managers. The 24V power-to-lock mechanism ensures guard integrity, enhancing overall operational security.

Availability & Shipping

  • In stock: 440G-EZS21STL05H ready for immediate dispatch from our Florida warehouse.
  • Free USA shipping: FedEx Priority (2–5 business days) and UPS Ground (3–5 business days). Expedited options available at checkout.
  • Worldwide delivery: FedEx International Priority (1–5 days), UPS International Priority (3–5 days), and USPS International (5–10 days) — rates calculated at checkout.
  • Bulk pricing: Volume discounts on request — contact our sales team for quantity quotes.
  • Buy with confidence: Every 440G-EZS21STL05H ships with a 1-Year PALM Parts warranty and a 30-day return window.
SUPPORT

Frequently Asked Questions — Allen-Bradley

Its primary function is to provide an electromagnetic safety interlock, ensuring machine guarding and preventing unauthorized access to hazardous machinery.

Machine down? We ship parts the same day.

New, surplus, and refurbished Allen-Bradley inventory in stock. Request a quote or speak directly with an automation specialist for emergency sourcing.

CUSTOMER REVIEWS

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Independent Supplier Notice

PALM Parts Solution operates as an independent industrial automation supplier and is not an authorized distributor or affiliate of any listed manufacturer or brand name. Manufacturer trademarks and product names are used solely for identification purposes. Original manufacturer warranties do not apply. All products sold by PALM Parts are backed by our own 1-year warranty.

Product Condition & Firmware

All products are sold as new unless stated otherwise. Original manufacturer packaging may show signs of handling, storage, or shelf wear. Date codes and series may vary from current factory production. PALM Parts does not guarantee the presence, version, or compatibility of any firmware on PLC or automation products.

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PALM Parts Solution sells used surplus products. PALM Parts Solution is not an authorized distributor, affiliate, or representative for the brands we carry. Products sold by PALM Parts Solution come with PALM Parts Solution's 1-Year Warranty and do not come with the original manufacturer's warranty. Designated trademarks, brand names and brands appearing herein are the property of their respective owners. This website is not sanctioned or approved by any manufacturer or tradename listed.

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