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Allen-Bradley 440N-Z21S17H Safety Relay with LED indicators

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Allen-Bradley 440N-Z21S17H

by Allen-Bradley

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OverviewThe Allen-Bradley 440N-Z21S17H Safety Relay delivers an advanced, high-performance safety solution for demanding industrial environments. Engineered by the respected Allen-Bradley brand, this safety relay offers exceptional reliability and precision in critical applications, serving as a core component for compliant and secure automation systems. Its integrated LED indicators deliver immediate status and diagnostic feedback, streamlining monitoring and troubleshooting. This robust relay ensures safe and efficient equipment operation by managing safety circuits, thereby safeguarding personnel and assets in potentially hazardous settings. Featuring a compact design and simple integration, the 440N-Z21S17H is a vital asset for any industrial operation prioritizing safety without sacrificing performance or continuous operation.Key Features Intuitive LED Indicators Bright, easy-to-read LED lights provide instant visual feedback on the relay's status and diagnostic data, facilitating quick identification and resolution of any issues. Optimized Compact Design Engineered for space efficiency, its slim profile enables seamless integration into densely packed control panels, maximizing valuable cabinet space. Unwavering Reliable Performance Specifically designed and rigorously tested for industrial safety applications, ensuring consistent and dependable operation even under challenging conditions. Superior High-Quality Construction Manufactured with durable materials and precise engineering, guaranteeing exceptional longevity and resilience in harsh industrial environments. Effortless DIN Rail Mounting Facilitates quick, secure, and tool-free installation onto standard DIN rails, simplifying setup and reducing commissioning time. Certified Safety Functions Independently certified for critical safety applications, providing assurance that it adheres to international safety standards and regulations. Technical Specifications Model: 440N-Z21S17H Type: Safety Relay Input Voltage: 24V DC Contact Configuration: 1 Normally Open (NO), 1 Normally Closed (NC) Safety Function: Certified for safety applications LED Indicators: For real-time diagnostics and status checks Mounting Type: DIN rail mounting Operating Temperature Range: -20°C to +55°C (-4°F to +131°F) Certifications: CE, UL, RoHS Applications Machinery and Equipment Safety Circuits Crucial for ensuring the safe operation of manufacturing machinery, presses, robots, and other automated equipment. Industrial Automation & Control Systems Integral to the safety architecture of complex automation lines, protecting operators and preventing equipment damage. Emergency Stop Systems Provides a reliable and immediate response mechanism for emergency shutdown scenarios, enhancing workplace safety. Protective Systems in Hazardous Areas Essential for implementing safety measures in environments where potential hazards necessitate robust safety controls. Monitoring and Fault Detection Facilitates continuous monitoring of safety functions and quick identification of system faults, minimizing downtime and maximizing productivity. Why Choose This Model? Enhanced Personnel and Equipment Protection Significantly improves safety protocols, effectively shielding both operators and expensive machinery from hazardous operational conditions. Rapid Diagnostics & Minimal Downtime The innovative LED indicators offer instant access to operational status, enabling swift troubleshooting and significantly reducing costly production downtime. Seamless Integration & Scalability Engineered for effortless integration into both new and existing safety systems, providing flexibility and scalability for evolving industrial requirements. Industrial-Grade Durability Constructed to withstand the most challenging industrial environments, ensuring consistent performance and an extended operational life. Order NowSecure your operations with the Allen-Bradley 440N-Z21S17H Safety Relay. Contact Palm Parts Solution today to place your order and ensure peak safety performance.FAQQ: What is the main purpose of the Allen-Bradley 440N-Z21S17H Safety Relay?A: The primary purpose is to provide an advanced safety control solution that ensures the secure and efficient operation of industrial machinery and equipment, protecting both personnel and assets in hazardous environments.Q: How do the LED indicators benefit industrial operations?A: The intuitive LED indicators provide immediate visual feedback on the relay's status and diagnostic information, greatly simplifying monitoring and troubleshooting processes, which leads to faster issue resolution and reduced downtime.Q: Can this safety relay be easily integrated into existing systems?A: Yes, the 440N-Z21S17H is designed for easy integration into both new and existing safety systems, offering flexibility and scalability for evolving industrial needs.Q: What kind of environments is this safety relay suitable for?A: It is built with high-quality construction and industrial-grade durability, making it suitable for harsh industrial environments and protective systems in hazardous areas.Q: Does this product meet international safety standards?A: Yes, it features certified safety functions and is independently certified for critical safety applications, confirming compliance with global safety standards and regulations.

🇺🇸 Ships from our Florida warehouse
1-Year PALM Parts Warranty
CONDITION
$359.99
16 in stock

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PRODUCT DETAILS

Allen-Bradley 440N-Z21S17H

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: 440N-Z21S17H
  • Type: Safety Relay
  • Input Voltage: 24V DC
  • Contact Configuration: 1 Normally Open (NO), 1 Normally Closed (NC)
  • Safety Function: Certified for safety applications
  • LED Indicators: For real-time diagnostics and status checks
  • Mounting Type: DIN rail mounting
  • Operating Temperature Range: -20°C to +55°C (-4°F to +131°F)
  • Certifications: CE, UL, RoHS

Applications

  • Machinery and Equipment Safety Circuits

    Crucial for ensuring the safe operation of manufacturing machinery, presses, robots, and other automated equipment.

  • Industrial Automation & Control Systems

    Integral to the safety architecture of complex automation lines, protecting operators and preventing equipment damage.

  • Emergency Stop Systems

    Provides a reliable and immediate response mechanism for emergency shutdown scenarios, enhancing workplace safety.

  • Protective Systems in Hazardous Areas

    Essential for implementing safety measures in environments where potential hazards necessitate robust safety controls.

  • Monitoring and Fault Detection

    Facilitates continuous monitoring of safety functions and quick identification of system faults, minimizing downtime and maximizing productivity.

Why Choose the 440N-Z21S17H?

  • Enhanced Personnel and Equipment Protection

    Significantly improves safety protocols, effectively shielding both operators and expensive machinery from hazardous operational conditions.

  • Rapid Diagnostics & Minimal Downtime

    The innovative LED indicators offer instant access to operational status, enabling swift troubleshooting and significantly reducing costly production downtime.

  • Seamless Integration & Scalability

    Engineered for effortless integration into both new and existing safety systems, providing flexibility and scalability for evolving industrial requirements.

  • Industrial-Grade Durability

    Constructed to withstand the most challenging industrial environments, ensuring consistent performance and an extended operational life.

Availability & Shipping

  • In stock: 440N-Z21S17H 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 440N-Z21S17H ships with a 1-Year PALM Parts warranty and a 30-day return window.
SUPPORT

Frequently Asked Questions — Allen-Bradley

A: The primary purpose is to provide an advanced safety control solution that ensures the secure and efficient operation of industrial machinery and equipment, protecting both personnel and assets in hazardous environments.

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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