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Allen Bradley

Allen Bradley 871TM-DH5NN18-H2 Inductive Proximity Sensor

Allen Bradley 871TM-DH5NN18-H2 30mm DC 2-wire Normally Closed Proximity Sensor.

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ManufacturerAllen Bradley

Part number871TM-DH5NN18-H2

Sensing Range 18mm

Housing Size 30mm

Output Type DC 2-wire

Function Normally Closed (NC)

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30mm threaded metal housing DC 2-wire, Normally Closed output 18mm sensing range 2-meter cable length Reliable metallic object detection Compact design

Product description

The Allen Bradley 871TM-DH5NN18-H2 is a 30mm inductive proximity sensor operating on a DC 2-wire system with a normally closed (NC) output. It includes a 2-meter cable, making it suitable for applications with shorter wiring requirements. The sensor detects metallic objects within its 18mm sensing range.

This sensor is commonly used in industrial automation for position sensing, object detection, and safety interlock applications where a normally closed output is preferred. Its compact size and reliable detection make it versatile for various machines and systems.

Stanlo Automation, a veteran-owned supplier of surplus industrial automation parts, offers the 871TM-DH5NN18-H2. We provide quality components and expert service to meet your automation needs.

Technical specifications

Sensing Range	18mm
Housing Size	30mm
Output Type	DC 2-wire
Function	Normally Closed (NC)
Cable Length	2m
Voltage	20-250 VAC/VDC (for DC 2-wire), 90-250 VAC (for AC 2-wire)

Common applications

Position sensing

Object detection

Safety interlocks

Automation control

Machine guarding

Packaging equipment

Compatible systems

Industrial automation systems PLC I/O modules Safety circuits

Also known as

Allen Bradley 871TM-DH5NN18-H2 sensor 871TM DH5NN18 H2 AB 2m cable NC sensor

Replaces / compatible with

This sensor is a direct replacement for compatible Allen Bradley 871TM series proximity sensors that require a 30mm housing, DC 2-wire NC output, and an 18mm sensing range with a 2-meter cable.

Technical note

Expert tip

The DC 2-wire NC configuration is suitable for direct connection to many PLC inputs or for use in safety-related circuits where the absence of an object should signal a safe state.

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Frequently asked questions

What is the function of the normally closed output on the 871TM-DH5NN18-H2?

The Allen Bradley 871TM-DH5NN18-H2 has a normally closed (NC) output. This means the sensor's output circuit is conducting when no metallic object is present. When a metallic object enters the sensing range, the circuit opens, interrupting the flow of current.