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Allen Bradley 871TM Sensors 871TM-B4N12-R3

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871TM-B4N12-R3

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The 871TM-B4N12-R3 from Allen Bradley is an inductive sensor designed for a variety of applications. With an output type of AC N.O. contacts and capable of operating across a voltage range of 20 to 250 VAC/DC, this sensor adds versatility to automation systems.

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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 871TM-B4N12-R3

ManufacturerAllen Bradley
Product TypeInductive Sensor
Product Line871TM Sensors
Part Number871TM-B4N12-R3
UPC662073977889
Output TypeAC N.O. Contacts
Sensor Diameter12 mm
Nominal Sensing Distance4 mm
Enclosure TypeNEMA 13
Shock30 G, 11 ms
Load Current5 mA
Inrush Current≤2 A (1 cycle)
Operating Voltage20-250 VAC/DC
Leakage Current≤1.9 mA at 120V AC
Voltage Drop≤10V at 5 to 200 mA
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With specifications tailored for automation tasks, the Allen Bradley 871TM-B4N12-R3 is an inductive sensor that operates within a 20-250 VAC/DC voltage range. This unit establishes its relevance in numerous applications by featuring output contacts that are normally open (N.O.). Measuring 12 mm in diameter, it possesses a sensing distance of 4 mm, making it effective for proximity detection.

The sensor is housed in a NEMA 13 enclosure, which provides adequate protection against dust and moisture, ensuring reliability in various settings. In terms of performance, the 871TM-B4N12-R3 can endure shocks rated at 30 G for 11 milliseconds, making it durable under strenuous conditions. It has a load current rating of 5 mA and allows a limit of inrush current up to 2 A for one cycle.

When operating at 120V AC, the leakage current is maintained at a maximum of 1.9 mA, contributing to its efficiency. Additionally, for output loads ranging from 5 to 200 mA, the voltage drop is limited to 10V, which aids in effective power management within circuits. Overall, the 871TM-B4N12-R3 sensor is designed for dependable operation, providing essential functionality within automated environments.