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Allen Bradley Guardmaster Safety Relays 440N-Z21SS2B

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440N-Z21SS2B

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The 440N-Z21SS2B model from Allen Bradley, part of the Guardmaster Safety Relays series, is designed as a non-contact safety switch. Operating at a nominal voltage of 24 VDC, it utilizes a Sensaguard interlock mechanism for enhanced safety applications.

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Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

Technical specifications for 440N-Z21SS2B

ManufacturerAllen Bradley
Product TypeNon-Contact Switch
Product LineGuardmaster Safety Relays
Part Number440N-Z21SS2B
Weight1.63 lbs (0.74 kg)
UPC662074620296
Interlock TypeSensaguard
Nominal Operational Voltage24 VDC
Housing TypeRectangular Housing
Actuator TypeRectangular RFID
Sensing Distance18 mm
Output Type (Safety)DC PNP (Source) and Dual Safety
Output Configuration (Safety)2 PNP Outputs, 0.2A
Output Type (Auxiliary)DC PNP (Source)
Output Configuration (Auxiliary)1 PNP Output, 0.2A
Cable Length10 m
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The Allen Bradley 440N-Z21SS2B is a non-contact switch categorized under the Guardmaster Safety Relays series. It is engineered to operate efficiently at a nominal voltage of 24 VDC. This device incorporates a Sensaguard interlock type for heightened safety in various applications.

Housing the switch in a rectangular housing, it optimizes space while providing robust protection. A rectangular RFID actuator is utilized to facilitate the sensing functionality, with a range of 18 mm to detect presence reliably. Among its output features, the 440N-Z21SS2B supports dual safety outputs that deliver DC PNP (source) with configurations that include two PNP outputs each rated at 0.2A, ensuring safety compliance. An auxiliary output is also available, configured to offer one PNP output at 0.2A, making it versatile for various control operations.

The product is accompanied by a cable that extends to 10 meters, which enhances installation flexibility and reach. This switch, with its comprehensive features and robust design, is ideal for applications that necessitate reliable operational safety and user protection.