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Allen Bradley

Allen Bradley 871L-D40EP40-D4 Inductive Proximity Sensor

Allen Bradley 871L-D40EP40-D4 40mm inductive proximity sensor.

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

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ManufacturerAllen Bradley

Part number871L-D40EP40-D4

Sensing Range 40 mm

Output NPN

Function Normally Closed (NC)

Circuit Type DC 3-wire

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12-month warranty

All units tested

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Order by 2pm CST

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Worldwide delivery

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Veteran-owned

CAGE: 9NK75

40mm sensing range NPN Normally Closed output Stainless steel housing Extended sensing distance Micro QD connector Robust construction

Product description

The Allen Bradley 871L-D40EP40-D4 is a robust 40mm cylindrical inductive proximity sensor featuring a 40mm sensing range. It operates as a DC 3-wire normally closed (NC) device, delivering an NPN output for reliable detection of metallic objects. Constructed with a durable stainless steel housing and a PBT plastic sensing face, it is built for demanding industrial environments.

This sensor is well-suited for applications requiring extended sensing distances or the detection of larger metallic components. Common uses include presence detection on large machinery, position feedback in material handling systems, and safety interlocks in industrial settings.

Stanlo Automation, a veteran-owned surplus distributor, provides high-quality industrial automation parts. When you source the 871L-D40EP40-D4 from Stanlo, you benefit from competitive pricing and the assurance of dependable, tested surplus components to keep your systems operational.

Technical specifications

Sensing Range	40 mm
Output	NPN
Function	Normally Closed (NC)
Circuit Type	DC 3-wire
Housing Style	Cylindrical
Body Diameter	40 mm
Housing Material	Stainless Steel
Face Material	PBT Plastic
Output Indicator	LED
Connection Type	Micro QD (M12 connector)

Common applications

Large machinery detection

Material handling systems

Industrial automation

Robotic cells

Metal fabrication

Automated warehouses

Vehicle detection

Compatible systems

Allen Bradley ControlLogix Allen Bradley SLC 500 Allen Bradley PanelView Plus

Also known as

871L-D40EP40D4 Allen Bradley 40mm proximity sensor 871L series NC sensor

Replaces / compatible with

This 40mm inductive proximity sensor is designed to replace or supplement existing 40mm sensors in Allen Bradley and other compatible automation systems.

Technical note

Expert tip

The stainless steel housing provides excellent resistance to corrosion and impact, making it suitable for harsh industrial environments.

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Frequently asked questions

What applications are best suited for the Allen Bradley 871L-D40EP40-D4?

The 871L-D40EP40-D4 is ideal for applications needing a longer sensing distance, such as detecting large metallic objects or parts from further away. Its NPN Normally Closed output makes it suitable for fail-safe detection circuits.