Sensors and limit switches

Built sensor tough

Eaton's E51 limit switch style modular sensors are available in thru-beam, reflex, polarized reflex, diffuse reflective and fiber optic sensing modes to solve a wide variety of sensing applications. Modular, plug-in components are easy to maintain, meaning less downtime and reduced inventory. Choose between 2-wire sensors with AC/DC operation and 4-wire sensors in either AC or DC styles. Connection options include terminal, mini-connector and various lengths of cable. Sensors can be ordered in component form or as fully assembled units.

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Overview Models Resources Support

Core features for the E51 NEMA limit switch photoelectric sensors

Choose from five different sensing modes including fiber optic
All heads feature a selector switch for light or dark operation
Logic modules are available to provide additional control functions
Rugged construction, ideal for industrial environments
Viton gaskets ensure a positive seal and high chemical resistance

Sensor heads can be rotated to any of four positions
Components are interchangeable with E51 proximity sensors
Sensors accommodate both U.S. and DIN mounting dimensions
Sensor bodies feature bifurcated engagement prongs for a reliable electrical connection when plugging into receptacle stabs

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Not sure if Eaton sensor and limit switch solutions are right for you? You can request samples of Eaton sensors FREE OF CHARGE to test them with your machine applications. We will make our Eaton experts available to assist with product selection and provide technical guidance so that you choose the right sensor for your needs.

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3D models

E51 NEMA Limit Switch-style Series Photoelectric Sensors 3D .dxf Models

(ZIP 9 MB , 09/08/2021)
E51 NEMA Limit Switch-style Series Photoelectric Sensors 3D .step Models

(ZIP 20 MB , 04/03/2020)

Brochures

Eaton's complete line of sensing technologies

(PDF 366 KB , 08/29/2020)
Sensors line card

BR053004EN

(PDF 6 MB , 02/17/2023)

Catalogs

Limit switches

Volume 8, Tab 2

(PDF 30 MB , 12/31/2018)
Photoelectric sensors

Volume 8, Tab 5 - CA08100010E

(PDF 17 MB , 10/23/2024)

Drawings

E51 NEMA Limit Switch-style Series Photoelectric Sensors 2D Drawings

(ZIP 5 MB , 09/08/2021)

Contact me form

Email: Technical support

trc@eaton.com

Phone: Technical support

For technical support call 877-386-2273 then select OPTION 2 then OPTION 6 then OPTION 3

Locate a channel partner

Email: Help with an existing order

CSCAveryCreek@Eaton.com

Phone: Help with an existing order

For help with an exist order call 877-386-2273 OPTION 1 then OPTION 2

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E51 NEMA limit switch photoelectric sensors