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Allen Bradley Guardmaster Safety Relays 440N-Z21S16B

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440N-Z21S16B

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The 440N-Z21S16B from Allen Bradley is a non-contact switch part of the Guardmaster Safety Relays series. This unit features solid-state contacts and operates with a maximum current consumption of 50 mA.

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Ships from Raleigh, NC
2 Year DO Supply Warranty
Not an Authorized Distributor: DO Supply is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All of our products come with DO Supply's 2-year warranty.
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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-Z21S16B

ManufacturerAllen Bradley
Product TypeNon-Contact Switch
Product LineGuardmaster Safety Relays
Part Number440N-Z21S16B
Weight0.69 lbs (0.31 kg)
UPC662074620340
Special FeaturesNot Included
Solid-State ContactsIncluded
PVC CableIncluded
Cable Length10 meters
Barrel Type18 mm Cylindrical Barrel
Assured Sensing Distance15 mm
LED Door Indication FeatureIncluded
Safety Contacts2 N.C. Contacts
Auxiliary Contacts1 N.O. Contacts
Environmental RatingIP69K
Short-Circuit ProtectionSupported
Over-Voltage ProtectionSupported
Current Consumption50 mA
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The Allen Bradley 440N-Z21S16B serves as a reliable non-contact switch designed for various safety applications. This component integrates solid-state contacts, enhancing its responsiveness and durability. It incorporates a robust PVC cable that measures 10 meters in length, providing flexibility for installation.

The unit is configured with a barrel-type design, measuring 18 mm in diameter, which aids in incorporating the switch into different setups. With an assured sensing distance of up to 15 mm, it reliably detects the presence of objects. An LED door indication feature offers visual feedback, contributing to easier monitoring of the switch's operational status.

This model is equipped with 2 normally closed contacts meant for safety applications, alongside an additional normally open contact for auxiliary use. The 440N-Z21S16B is rated at IP69K, which signifies superior protection against dust and moisture. This environmental rating equips the switch for high-pressure and high-temperature cleaning procedures. Furthermore, it supports short-circuit and over-voltage protection, ensuring enhanced reliability during operation. With a current consumption capped at 50 mA, the unit operates efficiently across varying conditions.