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Allen-Bradley 440N-Z21W1PH
by Allen-Bradley
Read verified buyer reviews ↓OverviewThe Allen-Bradley Guardmaster 440N-Z21W1PH Safety Relay Module is an essential component for facilities prioritizing stringent safety protocols and dependable performance. Designed for seamless incorporation into diverse industrial automation environments, this safety relay delivers a high-capability solution for overseeing and managing safety circuits. Its adaptable 1 Normally Open (NO) and 1 Normally Closed (NC) contact configuration, powered by a 24V DC input, makes it an invaluable asset for guaranteeing equipment and personnel safety and adherence to standards. Reflecting the precision associated with Allen-Bradley, the 440N-Z21W1PH is crafted for consistent operation in challenging settings, making it a prime selection for elevating the safety integrity of vital industrial uses.Key Features Flexible Contact Configuration: Features 1 Normally Open (NO) and 1 Normally Closed (NC) contact, providing adaptable integration options for various safety circuit designs and control approaches. Optimized 24V DC Input: Operates efficiently with a standard 24V DC input, ensuring broad compatibility with most industrial control systems and power infrastructure. Strict Safety Compliance: Meticulously engineered to meet and surpass rigorous international safety benchmarks, making it the preferred option for applications where safety compliance is non-negotiable. Compact Design: Its notably compact footprint enables straightforward integration into existing control panels and machinery, maximizing space utilization without sacrificing performance. Exceptional Reliability: Constructed for extended operational lifespans and consistent output, ensuring your safety systems remain fully functional and trustworthy even in tough conditions. Seamless Allen-Bradley Compatibility: Built for flawless integration with other Allen-Bradley safety systems, simplifying system expansion and setup. Technical Specifications Model Number: 440N-Z21W1PH Input Voltage: 24V DC Contact Configuration: 1 Normally Open (NO) contact and 1 Normally Closed (NC) contact Safety Rating: Suitable for safety-critical tasks, adhering to leading industry safety protocols. Enclosure Rating: IP20, providing protection against solid objects up to 12mm and a degree of protection against water ingress. Temperature Range: -20°C to 60°C (-4°F to 140°F), ensuring dependable function across a wide range of industrial temperatures. Mounting: DIN rail mounting, allowing for rapid and secure installation within control cabinets and industrial equipment enclosures. Applications Industrial Safety Circuits: Critical for integration into safety-related control circuits across diverse industrial sectors, improving operational security. Control Panel Systems: An essential component for installation in control panels that require robust and dependable safety relay functionality. Manufacturing and Automation Lines: Indispensable for protecting manufacturing processes and automated machinery, reducing risks and ensuring personnel safety. Factory Equipment Safeguarding: Integral for protecting a variety of factory equipment by integrating directly with established industrial safety systems. Machinery Safety: Ideal for use in guarding machinery and preventing dangerous movements during operation, maintenance, and shutdown procedures. Why ChooseThe 440N-Z21W1PH is specifically crafted to uphold the highest safety standards, offering peace of mind and safeguarding your valuable assets and personnel. With its user-friendly design and compatibility with existing Allen-Bradley systems, integration into your current setup is both swift and straightforward, minimizing downtime. Built with durable materials and precise engineering, this module provides unmatched reliability.Order NowUpgrade your industrial safety systems today. Contact us for pricing and availability.FAQWhat are the primary uses of the Allen-Bradley 440N-Z21W1PH?This safety relay is primarily used in industrial safety circuits, control panel systems, manufacturing and automation lines, factory equipment safeguarding, and machinery safety to ensure dependable operation and protection.What is the operating voltage for this safety relay?The 440N-Z21W1PH operates with a 24V DC input voltage, making it compatible with most industrial control systems.
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Allen-Bradley 440N-Z21W1PH
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:
- Exact replacement — same Allen-Bradley catalog number, new or refurbished, tested and warrantied
- Form-fit-function equivalent — alternate revision or build that drops in without code changes
- 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 Number: 440N-Z21W1PH
- Input Voltage: 24V DC
- Contact Configuration: 1 Normally Open (NO) contact and 1 Normally Closed (NC) contact
- Safety Rating: Suitable for safety-critical tasks, adhering to leading industry safety protocols.
- Enclosure Rating: IP20, providing protection against solid objects up to 12mm and a degree of protection against water ingress.
- Temperature Range: -20°C to 60°C (-4°F to 140°F), ensuring dependable function across a wide range of industrial temperatures.
- Mounting: DIN rail mounting, allowing for rapid and secure installation within control cabinets and industrial equipment enclosures.
Applications
- Industrial Safety Circuits: Critical for integration into safety-related control circuits across diverse industrial sectors, improving operational security.
- Control Panel Systems: An essential component for installation in control panels that require robust and dependable safety relay functionality.
- Manufacturing and Automation Lines: Indispensable for protecting manufacturing processes and automated machinery, reducing risks and ensuring personnel safety.
- Factory Equipment Safeguarding: Integral for protecting a variety of factory equipment by integrating directly with established industrial safety systems.
- Machinery Safety: Ideal for use in guarding machinery and preventing dangerous movements during operation, maintenance, and shutdown procedures.
Why Choose the 440N-Z21W1PH?
The 440N-Z21W1PH is specifically crafted to uphold the highest safety standards, offering peace of mind and safeguarding your valuable assets and personnel. With its user-friendly design and compatibility with existing Allen-Bradley systems, integration into your current setup is both swift and straightforward, minimizing downtime. Built with durable materials and precise engineering, this module provides unmatched reliability.
Availability & Shipping
- ▸In stock: 440N-Z21W1PH 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-Z21W1PH ships with a 1-Year PALM Parts warranty and a 30-day return window.
Frequently Asked Questions — Allen-Bradley
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.
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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.