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Allen Bradley 871A-TR4-D Inductive Proximity Sensor, 4mm, NO

Allen Bradley 871A-TR4-D Inductive Proximity Sensor

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ManufacturerAllen Bradley

Part number871A-TR4-D

Sensing Range 4mm

Output NPN

Contact Type Normally Open (NO)

Voltage 10-30VDC

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12-month warranty

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Veteran-owned

CAGE: 9NK75

4mm sensing range NPN output Normally Open contacts M12 threaded stainless steel housing 10-30VDC operation Durable construction

Product description

The Allen Bradley 871A-TR4-D is a reliable inductive proximity sensor designed for detecting metallic objects without physical contact. It features a 4mm sensing range and NPN output with normally open (NO) contacts. This sensor operates on a 10-30VDC supply voltage and is housed in a durable M12 threaded stainless steel body.

This proximity sensor is widely used in various industrial automation applications, including machine guarding, object detection on conveyor systems, and position sensing in manufacturing. It is suitable for industries such as automotive, food and beverage, and packaging where robust and accurate detection is required.

Source your Allen Bradley 871A-TR4-D proximity sensor from Stanlo Automation, a veteran-owned business committed to providing high-quality surplus industrial parts. We offer competitive pricing and expert support to ensure your automation needs are met efficiently and cost-effectively.

Technical specifications

Sensing Range	4mm
Output	NPN
Contact Type	Normally Open (NO)
Voltage	10-30VDC
Body Style	M12 Threaded
Body Material	Stainless Steel
Frequency Response	1000 Hz

Common applications

Object detection

Position sensing

Machine guarding

Conveyor automation

Assembly lines

Packaging machinery

Compatible systems

Industrial control systems PLC inputs DC power supplies

Also known as

871A-TR4-D sensor Allen Bradley proximity switch 871A inductive sensor NPN NO proximity sensor

Replaces / compatible with

This sensor is part of the Allen Bradley 871A series and is a direct replacement for other sensors with similar specifications within this line.

Technical note

Expert tip

Ensure proper wiring for NPN output to avoid damage; connect the load between the sensor's output and the positive (+) DC supply.

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Frequently asked questions

What is the sensing range of the Allen Bradley 871A-TR4-D?

The Allen Bradley 871A-TR4-D inductive proximity sensor has a sensing range of 4mm. This allows it to reliably detect metallic objects within this close proximity.