Allen-Bradley 440N-Z21S17H Non Contact Switch,SensaGuard,No Special Features,2 N.C. Saf
$239.99
Out of stock
Request QuoteAllen-Bradley 440N-Z21S17H — The Allen-Bradley 440N-Z21S17H is a SensaGuard 18 mm stainless-steel barrel non-contact safety interlock switch (Series B) with 2 N.C. solid-state safety contacts and 1 N.O. auxiliary output, using low-level magnetic coding. Rated IEC 60947-5-3 Category 4 PLe per ISO 13849-1 (Type 4 interlocking device per ISO 14119) and SIL CL3 per IEC 62061 / IEC 61508, it is designed for machine-door and guard monitoring applications requiring the highest safety integrity. The 18 mm M18-threaded stainless-steel barrel provides high corrosion resistance and survives in washdown, food-and-beverage, and hostile industrial environments. Power input is 24V DC PELV/SELV with an 8-pin DC quick-disconnect connection. PFHᴅ = 1.32 × 10⁻⁹.
| Product Family | Bulletin 440N SensaGuard 18 mm Barrel Non-Contact Safety Switch (Series B) |
| Housing | Stainless-steel 18 mm M18-threaded barrel |
| Safety Contacts | 2 N.C. solid-state safety outputs + 1 N.O. auxiliary |
| Coding | Standard (low-level) magnetic coding |
| Actuator Type | 18 mm target |
| Connection | 8-pin DC quick-disconnect |
| Power Input | 24V DC PELV/SELV |
PLC Exchange is not an authorized distributor: Original Packaging is synonymous with Used Surplus. See Original Packaging or Warranty for more information.
Description
Allen-Bradley 440N-Z21S17H
The Allen-Bradley 440N-Z21S17H is a SensaGuard 18 mm stainless-steel barrel non-contact safety interlock switch (Series B) with 2 N.C. solid-state safety contacts and 1 N.O. auxiliary output, using low-level magnetic coding. Rated IEC 60947-5-3 Category 4 PLe per ISO 13849-1 (Type 4 interlocking device per ISO 14119) and SIL CL3 per IEC 62061 / IEC 61508, it is designed for machine-door and guard monitoring applications requiring the highest safety integrity. The 18 mm M18-threaded stainless-steel barrel provides high corrosion resistance and survives in washdown, food-and-beverage, and hostile industrial environments. Power input is 24V DC PELV/SELV with an 8-pin DC quick-disconnect connection. PFHᴅ = 1.32 × 10⁻⁹.
| Switch Overview | |
|---|---|
| Catalog Number | 440N-Z21S17H |
| Product Family | Bulletin 440N SensaGuard 18 mm Barrel |
| Barrel Material | Stainless steel (M18-threaded) |
| Generation | Series B |
| Coding Type | Low-level (standard) coding |
| Contact Output Technology | Solid-state safety outputs |
| Safety Ratings | |
|---|---|
| Standard | IEC 60947-5-3 Type 4 Interlocking Device |
| Category / PL | Category 4 PLe per ISO 13849-1 |
| ISO 14119 Compliance | Type 4 Interlocking Device — low (standard) or high (unique) coding |
| SIL Claim Limit | SIL CL3 per IEC 62061 |
| SIL per IEC 61508 | SIL 3 |
| PFHᴅ | 1.32 × 10⁻⁹ (per hour) |
| T₁ Proof Test Interval | 20 years |
| Electrical | |
|---|---|
| Power Supply | 24V DC PELV/SELV per IEC 60364-4-41 (414-3) |
| Safety Outputs | 2 N.C. solid-state (redundant) |
| Auxiliary Output | 1 N.O. solid-state |
| Rated Impulse Withstand | 1 kV per IEC 60947-1 |
| Protection Features | Short-circuit, overload, reverse-polarity, overvoltage, loss-of-ground |
| EMC / Environmental | |
|---|---|
| ESD Immunity (Contact) | Per IEC 61326-1: 4 kV; Per IEC 61000-6-7 (fail-safe): 6 kV |
| ESD Immunity (Air) | Per IEC 61326-1: 8 kV; Per IEC 61000-6-7 (fail-safe): 8 kV |
| Radiated EMF Immunity | Per IEC 61326-1: 10 V/m; Per IEC 61000-6-7 (fail-safe): 20 V/m |
| EFT/Burst Immunity | ±2 kV @ 5 kHz (IEC 61000-4-4) |
| Conducted Immunity | Per IEC 61326-1: 10V; Per IEC 61000-6-7: 20V |
| Pollution Degree | 3 per IEC 60947-1 |
| Family Variants (Related Catalog Numbers) | |
|---|---|
| 18 mm Plastic (Std Code) | 440N-Z21S16A / S16B / S16H / S16J / S16E |
| 18 mm Plastic (Std Code, 1 N.O.+2 N.C. variants) | 440N-Z21S17A / S17B / S17H (this SKU if Stainless) / S17J |
| 18 mm Plastic (High-Level Code) | 440N-Z21U16x / Z21U17x |
| 30 mm Plastic Actuator | 440N-Z21S26x / Z21U26x |
| PUR Variant | 440N-Z21S17B-PUR |
| Stainless-Steel 18 mm (this SKU) | 440N-Z21S17H / Z21X16H |
| Certifications | |
|---|---|
| CE | Yes — all applicable directives |
| c-UL-us | UL 508 — US and Canada |
| TÜV | Yes — functional safety certification |
PLC Exchange Original Packaging is synonymous with Used Surplus. Because we are not an authorized distributor, we are not legally allowed to claim these items as “New”, “Factory Sealed”, or any other term that may imply such. We have over 10 years of experience working with trusted suppliers to make sure you receive the top-quality hardware you need. Used Surplus items ship in their original packaging, with the same function and contents as OEM-supplied materials. PLC Exchange is an independent supplier of industrial automation products and is not affiliated with the brand manufacturer or any of its authorized distributors. All warranties are provided directly by PLC Exchange. Trademarks, logos, and brand names referenced are property of their respective owners and are used for descriptive identification only.
Disclaimer: PLC Exchange is an independent reseller and is not an authorized distributor, affiliate, licensee, partner, or agent of Allen-Bradley / Rockwell Automation. All product information on this page is compiled from publicly-available manufacturer publications, technical data sheets, and catalog sources, each of which remains the copyright of its originating manufacturer. We make no representation or warranty, express or implied, regarding the accuracy, completeness, timeliness, or fitness for any particular purpose of the specifications or descriptions shown — content may contain errors, omissions, or out-of-date information. Product images are the property of their respective manufacturers, trademark owners, and source publications, and are displayed solely for identification purposes under the nominative fair use doctrine; images are representative and may depict a different configuration or catalog variant than the exact product listed. Purchasers should independently verify specifications against the current manufacturer publication before placing an order. All product names, trademarks, service marks, and registered trademarks are the property of their respective owners, and their use does not imply endorsement or affiliation.
Technical Notes for 440N-Z21S17H
- Refer to the manufacturer's installation instructions for proper mounting, wiring, and configuration.
- Ensure compatibility with your existing system architecture before ordering.
- All 440N-Z21S17H units sold by PLC Exchange are tested and ship in original factory packaging.
- For application-specific questions or system compatibility verification, contact PLC Exchange technical support at [email protected] or 980-202-0882.
Alternative Part Numbers & Names for 440N-Z21S17H
The 440N-Z21S17H by Allen-Bradley may also be found under the following alternative names, catalog numbers, or common search variations:
- 440NZ21S17H
- Allen Bradley 440N-Z21S17H
- Allen-Bradley 440N-Z21S17H
- 440N Z21S17H
- 440N/Z21S17H
All variations refer to the same Allen-Bradley product. If you are unsure whether this is the correct part for your application, contact our team for assistance.
Additional information
| Weight | 0.5 lbs |
|---|---|
| Dimensions | 1.9 × 0.9 × 1.2 in |
| warranty | 2.5 Year PLC Exchange Warranty, 30 Days worry-free return from delivery |
| upc | 662074620579 |
| mpn | 440N-Z21S17H |
| manufacturer | Allen-Bradley |
| condition | Original Packaging |
Dimensions & Weight for 440N-Z21S17H
| Shipping Dimensions | |
|---|---|
| Weight | 0.5 lbs |
| Length | 1.9 in |
| Width | 0.9 in |
| Height | 1.2 in |
| Box Dimensions (L×W×H) | 1.9 × 0.9 × 1.2 in |
Dimensions shown are for the shipping package. For module-level mechanical dimensions, refer to the manufacturer datasheet.
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Frequently Asked Questions
Where can I find the technical datasheet for the 440N-Z21S17H?
The official manufacturer datasheet is available for download on the 440N-Z21S17H product page at PLC Exchange. Look for the Tech Data PDF link in the product description.
Does the 440N-Z21S17H include a warranty?
Yes. Every 440N-Z21S17H sold by PLC Exchange includes a 2.5-year warranty (30 months, full replacement). Details: https://plcexchange.net/warranty-information/
What is the return policy for the 440N-Z21S17H?
PLC Exchange offers a 30-day worry-free return policy. Eligibility and details: https://plcexchange.net/return-policy/
When will my 440N-Z21S17H ship?
In-stock orders placed before 4 PM ET ship the same business day via free UPS Ground. Expedited options (Next Day Air, 2nd Day Air) are available at checkout.
Who manufactures the 440N-Z21S17H?
The 440N-Z21S17H is manufactured by Allen-Bradley. PLC Exchange is an independent reseller specializing in Allen-Bradley industrial automation products.
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