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Allen-Bradley 440N-Z21S17B
by Allen-Bradley
Read verified buyer reviews ↓OverviewThe Allen-Bradley 440N-Z21S17B Safety Interlock Switch is an indispensable device for modern manufacturing settings, carefully designed to safeguard personnel and machinery. This resilient switch offers a sophisticated safety solution by preventing entry to hazardous zones during operation. Its innovative design includes a unique coded actuator, providing exceptional tamper resistance and ensuring the highest levels of operational integrity and adherence to safety regulations. Perfect for a wide variety of uses, from protecting machinery to securing robotic work cells, the 440N-Z21S17B delivers peace of mind through its reliable operation and compliance with rigorous international safety benchmarks.Key Features Tamper-Resistant Coded Actuator Ensures heightened security and prevents unauthorized bypass, protecting both operators and equipment. Compact & Space-Saving Design Ideal for installations where mounting area is limited, without sacrificing performance. IP69K Rated Durability Provides superior defense against dust and high-pressure, high-temperature washdowns, making it suitable for tough industrial environments. High Safety Standard Compliance Meets stringent standards such as ISO 13849-1 and IEC 60947-5-3, guaranteeing dependable and compliant safety operations. Flexible Mounting Capabilities Engineered for versatile integration into existing safety systems, simplifying installation and reducing downtime. Pre-wired Convenience Features a 2-meter pre-wired cable for quick, straightforward installation, enabling faster deployment. Technical Specifications Type: Non-contact safety interlock switch Safety Standard: Compliant with ISO 13849-1 and IEC 60947-5-3 Actuation: Coded magnetic actuator for enhanced security Connection: Integrated 2-meter pre-wired cable Enclosure Rating: IP69K, suitable for demanding washdown environments Operating Temperature: Reliable performance from -25°C to +80°C (-13°F to +176°F) Material: Constructed from durable polymer housing for extended longevity Applications Guard door monitoring for industrial machinery and enclosures Comprehensive machinery safety systems requiring access control Conveyor system safety to prevent incidents during operation Robotics work cells, improving operator safety in automated environments Packaging equipment safety, ensuring secure and efficient processes Pharmaceutical and food processing lines, where hygiene and washdown capabilities are essential Why Choose This Model? Unmatched Reliability Engineered by Allen-Bradley, a leader in industrial automation, ensuring consistent and dependable safety performance. Superior Tamper Resistance The unique coded actuator offers top-tier security against unauthorized access, safeguarding your operations. Optimized for Harsh Environments With its IP69K rating, this switch is built to withstand extreme conditions, including rigorous washdowns. Streamlined Installation The pre-wired design significantly reduces installation time and complexity, getting your systems operational faster. Broad Compatibility Seamlessly integrates with various safety systems and control platforms, offering versatile application. Long-Term Value Durable construction and high safety standards translate into a longer operational lifespan and reduced maintenance costs. Order NowElevate the safety and efficiency of your industrial operations with the Allen-Bradley 440N-Z21S17B Safety Interlock Switch. Available for immediate dispatch, this critical safety component ensures compliance and superior protection. Invest in the best for your facility – order today and experience quick shipping and competitive pricing!FAQWhat makes the 440N-Z21S17B ideal for demanding industrial environments?Its IP69K rating provides exceptional protection against dust, high-pressure, and high-temperature washdowns, ensuring reliable operation in harsh conditions.How does the coded actuator enhance safety?The unique coded magnetic actuator offers superior tamper resistance, preventing unauthorized bypass and boosting overall security for personnel and equipment.Is this safety switch easy to install?Yes, the 440N-Z21S17B comes with a 2-meter pre-wired cable, which significantly simplifies and speeds up the installation process.What safety standards does this interlock switch meet?It complies with rigorous safety standards including ISO 13849-1 and IEC 60947-5-3, ensuring reliable and compliant performance in various industrial applications.Can this switch be used with different types of machinery?Absolutely. Its flexible mounting capabilities and broad compatibility allow for seamless integration into various safety systems and control platforms across a wide range of industrial equipment.
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Allen-Bradley 440N-Z21S17B
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
- Type: Non-contact safety interlock switch
- Safety Standard: Compliant with ISO 13849-1 and IEC 60947-5-3
- Actuation: Coded magnetic actuator for enhanced security
- Connection: Integrated 2-meter pre-wired cable
- Enclosure Rating: IP69K, suitable for demanding washdown environments
- Operating Temperature: Reliable performance from -25°C to +80°C (-13°F to +176°F)
- Material: Constructed from durable polymer housing for extended longevity
Applications
- Guard door monitoring for industrial machinery and enclosures
- Comprehensive machinery safety systems requiring access control
- Conveyor system safety to prevent incidents during operation
- Robotics work cells, improving operator safety in automated environments
- Packaging equipment safety, ensuring secure and efficient processes
- Pharmaceutical and food processing lines, where hygiene and washdown capabilities are essential
Why Choose the 440N-Z21S17B?
-
Unmatched Reliability
Engineered by Allen-Bradley, a leader in industrial automation, ensuring consistent and dependable safety performance.
-
Superior Tamper Resistance
The unique coded actuator offers top-tier security against unauthorized access, safeguarding your operations.
-
Optimized for Harsh Environments
With its IP69K rating, this switch is built to withstand extreme conditions, including rigorous washdowns.
-
Streamlined Installation
The pre-wired design significantly reduces installation time and complexity, getting your systems operational faster.
-
Broad Compatibility
Seamlessly integrates with various safety systems and control platforms, offering versatile application.
-
Long-Term Value
Durable construction and high safety standards translate into a longer operational lifespan and reduced maintenance costs.
Availability & Shipping
- ▸In stock: 440N-Z21S17B 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-Z21S17B 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.
Related Allen-Bradley resources
What Verified Buyers Say
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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.