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Allen-Bradley 440N-Z21SS2B
by Allen-Bradley
Read verified buyer reviews ↓OverviewThe Allen-Bradley 440N-Z21SS2B SensaGuard Non-Contact Safety Switch offers advanced safety capabilities and dependable operation in various industrial environments. This sophisticated safety device incorporates an 18mm detection range for accurate and consistent sensing, crucial for protecting both personnel and equipment. Its robust plastic enclosure and rectangular latch design ensure longevity and effortless integration into existing safety setups. Featuring clear LED status indicators and diagnostics, the 440N-Z21SS2B simplifies troubleshooting and system oversight by delivering immediate feedback. The inclusion of a common actuator code further ensures ease of use and broad compatibility. With a generous 10-meter PVC cable, this safety switch provides substantial installation flexibility, making it an excellent choice for safeguarding hazardous zones, machinery, and automated processes.Key Features Non-Contact Detection: Provides long-term reliability and minimizes wear, ensuring consistent performance without physical contact. 18mm Sensing Range: Delivers precise and secure sensing, improving operational safety and preventing false activations. Integrated LED Indicators: Offers instant visual feedback on the switch status, streamlining maintenance and reducing downtime through efficient troubleshooting. Rugged Plastic Housing (IP67 Rated): Constructed from durable plastic with an IP67 rating, offering resistance to dust and water, suitable for challenging industrial conditions. Standard Actuator Compatibility: Guarantees straightforward integration and wide compatibility with various existing safety control systems. 10-Meter PVC Connection Cable: Provides extended reach and flexibility for installation, adapting to complex machinery layouts and larger workspaces. High Safety Integrity: Certified to stringent safety standards including SIL 3 (IEC 61508) and PLe (ISO 13849-1), offering uncompromising safety assurance. Technical Specifications Model Designation: 440N-Z21SS2B Enclosure Material: Plastic Actuator Type: Rectangular/Rectangular Latch Assured Detection Distance: 18mm (0.71 in.) Status Indication: LED Door Indication and Diagnostics Actuator Coding: Standard Cable Composition: PVC Cable Length: 10 meters Safety Outputs: Dual PNP, 0.2A per output Auxiliary Outputs: None Power Requirements: 24V DC Environmental Protection Rating: IP67 Certifications: CE, UL, TUV, SIL 3, PLe Applications Access Monitoring Systems: Ideal for overseeing the secure position of doors, gates, and covers in hazardous industrial areas. Machine Guarding Solutions: Prevents unauthorized entry to dangerous machinery, ensuring operator safety during operation and maintenance. Robotics Integration: Enhances safety protocols in automated robotic work cells, protecting personnel from robotic arm movements. Packaging and Processing Lines: Maintains secure operations in high-speed packaging, filling, and processing lines, mitigating risks associated with moving components. Material Handling Equipment: Essential for guaranteeing the safe functioning of conveyors, lifts, and other material handling systems. Why Choose This Model?Exceptional Durability: Engineered with an IP67-rated plastic housing, the 440N-Z21SS2B is built to withstand demanding industrial conditions, including exposure to dust and water.Enhanced Safety Compliance: Adheres to the highest global safety standards (SIL 3, PLe), guaranteeing robust protection and regulatory conformity for your operations.Simplified Installation: The included 10-meter PVC cable and intuitive LED diagnostic features significantly reduce installation time and simplify setup procedures.Reliable & Consistent Performance: Utilizes advanced non-contact technology for consistent, error-free operation, minimizing accidental shutdowns and maximizing productivity.Seamless Compatibility: Designed with a standard actuator code, this switch integrates effortlessly with a broad range of existing safety control systems.Order NowSecure your industrial operations with the Allen-Bradley 440N-Z21SS2B SensaGuard Non-Contact Safety Switch. Contact us today to place your order or learn more about how this advanced safety solution can benefit your facility.FAQWhat is the sensing distance of the 440N-Z21SS2B?The 440N-Z21SS2B features an assured sensing distance of 18mm.What are the environmental protection ratings for this safety switch?This safety switch has an IP67 rating, indicating its resistance to dust and water.Which safety standards does the 440N-Z21SS2B meet?The 440N-Z21SS2B is certified to meet stringent safety standards, including SIL 3 (IEC 61508) and PLe (ISO 13489-1).
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Allen-Bradley 440N-Z21SS2B
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 Designation: 440N-Z21SS2B
- Enclosure Material: Plastic
- Actuator Type: Rectangular/Rectangular Latch
- Assured Detection Distance: 18mm (0.71 in.)
- Status Indication: LED Door Indication and Diagnostics
- Actuator Coding: Standard
- Cable Composition: PVC
- Cable Length: 10 meters
- Safety Outputs: Dual PNP, 0.2A per output
- Auxiliary Outputs: None
- Power Requirements: 24V DC
- Environmental Protection Rating: IP67
- Certifications: CE, UL, TUV, SIL 3, PLe
Applications
- Access Monitoring Systems: Ideal for overseeing the secure position of doors, gates, and covers in hazardous industrial areas.
- Machine Guarding Solutions: Prevents unauthorized entry to dangerous machinery, ensuring operator safety during operation and maintenance.
- Robotics Integration: Enhances safety protocols in automated robotic work cells, protecting personnel from robotic arm movements.
- Packaging and Processing Lines: Maintains secure operations in high-speed packaging, filling, and processing lines, mitigating risks associated with moving components.
- Material Handling Equipment: Essential for guaranteeing the safe functioning of conveyors, lifts, and other material handling systems.
Why Choose the 440N-Z21SS2B?
Exceptional Durability: Engineered with an IP67-rated plastic housing, the 440N-Z21SS2B is built to withstand demanding industrial conditions, including exposure to dust and water.
Enhanced Safety Compliance: Adheres to the highest global safety standards (SIL 3, PLe), guaranteeing robust protection and regulatory conformity for your operations.
Simplified Installation: The included 10-meter PVC cable and intuitive LED diagnostic features significantly reduce installation time and simplify setup procedures.
Reliable & Consistent Performance: Utilizes advanced non-contact technology for consistent, error-free operation, minimizing accidental shutdowns and maximizing productivity.
Seamless Compatibility: Designed with a standard actuator code, this switch integrates effortlessly with a broad range of existing safety control systems.
Availability & Shipping
- ▸In stock: 440N-Z21SS2B 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-Z21SS2B 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.