Home › Manufacturers › Allen Bradley › 871T-R2A12

Allen Bradley

Allen Bradley 871T-R2A12 Inductive Proximity Sensor

● In Stock 12-Mo Warranty Same-Day Dispatch Ships Worldwide 🎖 Veteran-Owned

In Stock — Ready to Ship

ManufacturerAllen Bradley

Part number871T-R2A12

Sensing Technology Inductive

Output Type NPN

Configuration Normally Closed (NC)

Sensing Range 4mm

Get a price for 871T-R2A12

Response within 1 business hour

🛡

12-month warranty

All units tested

⚡

Same-day dispatch

Order by 2pm CST

🌐

Worldwide delivery

US, EU, Asia, Middle East

🎖

Veteran-owned

CAGE: 9NK75

Non-contact detection NPN NC output 12mm threaded metal body 2-meter integral cable 4mm sensing range Fail-safe operation

Product description

The Allen Bradley 871T-R2A12 is a cylindrical inductive proximity sensor with a 12mm threaded metal body and a 2-meter integral cable. This model is configured with an NPN output and operates as Normally Closed (NC), meaning it outputs a signal when no metallic object is present and stops when an object enters the sensing field.

This sensor is suitable for safety-related applications or situations where a loss of detection should trigger an action. It's commonly used in manufacturing, material handling, and automated systems where reliable signaling for the absence of a part is critical.

Stanlo Automation, a veteran-owned provider of surplus industrial automation components, offers the Allen Bradley 871T-R2A12. We ensure you can source essential parts like this sensor to maintain operational continuity and efficiency.

Technical specifications

Sensing Technology	Inductive
Output Type	NPN
Configuration	Normally Closed (NC)
Sensing Range	4mm
Cable Length	2m
Body Style	Cylindrical
Diameter	12mm
Voltage	10-30V DC

Common applications

Safety Interlocks

Part Absence Detection

Machine Guarding

Material Handling

Automation Control

Conveyor Systems

Compatible systems

Standard DC I/O Modules PLC Input Modules Automation Controllers

Also known as

871T-R2A12 AB sensor, Allen Bradley 871T NC, 12mm NPN NC proximity

Replaces / compatible with

The 871T-R2A12 is an NPN Normally Closed inductive proximity sensor from the Allen Bradley 871T series, suitable for applications requiring fail-safe detection.

Technical note

Expert tip

The NC configuration is beneficial for applications where loss of detection should immediately signal an alarm or stop a process.

What happens next?

Email confirmation

Immediate receipt acknowledgment sent to you

Account manager assigned

Confirms your part's spec and condition

Your quote delivered

Tailored to your specific requirements

Frequently asked questions

What does the Normally Closed (NC) configuration of the 871T-R2A12 mean?

The 871T-R2A12 being Normally Closed (NC) means it provides an output signal when no metallic object is detected. When a metallic object enters the sensing range, the output signal is interrupted.