Eaton E51 Series Fiber-Optic P...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$389.20
Eaton E51 Series Fiber-Optic Photoelectric Sensor, Die-Cast Zinc Enclosure

Eaton E51 Series Fiber-Optic Photoelectric Sensor, Die-Cast Zinc Enclosure

(No reviews yet) Write a Review

Model: E51MTB

In Stock (leaves warehouse same day if ordered before 3pm ET)

$389.20
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

Eaton E51 Series Fiber-Optic Photoelectric Sensor, Die-Cast Zinc Enclosure

The Eaton E51 Series Fiber-Optic Photoelectric Sensor is a photoelectric switch assembly built around a die-cast zinc receptacle and body, designed for use with glass fiber optic cables in fiber-optic sensing mode. Rated for 10-30 Vdc input and a maximum DC current of 600 mA, this sensor provides complementary NPN open collector output signaling with a built-in LED indicator that lights when the output is ON. With an environmental rating covering NEMA 3, NEMA 3S, NEMA 4, NEMA 4X, NEMA 6, NEMA 6P, NEMA 12, NEMA 13, and IP67, plus CE marking and CSA certification, it is engineered for demanding industrial and washdown environments.

Key Features

  • Durable Construction: Receptacle and body are die-cast zinc for long-term strength and corrosion resistance in industrial settings.
  • Fiber-Optic Sensing: Operating mode is fiber-optic with a photoelectric switch type; requires glass fiber optic cables for operation.
  • Screw Terminal Connection: Screw terminal connection simplifies field wiring and maintenance.
  • LED Status Indicator: Integrated LED lights when the output is ON for quick visual status confirmation.
  • Electrical Rating: 10-30 Vdc input voltage with a maximum DC current and contact rating of 600 mA.
  • Output Configuration: Complementary NPN open collector contact configuration.
  • Wide Operating Range: Rated for operation from -13 °F to 158 °F, suited to varied ambient conditions.
  • Compact Footprint: Product width of 1.82 in, depth of 1.54 in, and height of 4.89 in.

Certifications & Compliance

  • CE Marked
  • CSA Certified
  • NEMA 3, NEMA 3S, NEMA 4, NEMA 4X, NEMA 6, NEMA 6P, NEMA 12, NEMA 13 Rated
  • IP67 Rated

Technical Specifications

  • Product Width: 1.82 in
  • Product Length/Depth: 1.54 in
  • Product Height: 4.89 in
  • Enclosure material: Receptacle and body: die cast zinc
  • Connection: Screw terminal
  • LED indicator: Lights when output is ON
  • Maximum DC current: 600 mA
  • Contact Rating: 600 mA
  • Sensor type: Fiberoptic
  • Operating temperature - max: 158 °F
  • Operating temperature - min: -13 °F
  • Input voltage: 10-30 Vdc
  • Operating mode: Fiber-optic
  • Switch type: Photoelectric
  • Contact configuration: Complementary NPN open collector
  • Warranty: 3 year

Typical Applications

  • Industrial Automation and Machine Sensing
  • Material Detection on Conveyors and Packaging Lines
  • Washdown and Harsh Environment Sensing (NEMA 4X/6P, IP67)
  • Panel-Mounted Photoelectric Switching Systems
  • Commercial and Industrial Electrical Installations

Why Eaton?

Eaton builds the E51 Series sensor around a die-cast zinc receptacle and body for durability, with CE marking and CSA certification backing its reliability for professional installations. The broad NEMA and IP67 environmental ratings, combined with a 3 year warranty, make it a dependable choice for photoelectric sensing in demanding industrial applications.

Manufacturer Resources

Product Specs

Product Width:
1.82 in
Enclosure Material:
Receptacle and body: die cast zinc
Connection:
Screw terminal
LED indicator:
Lights when output is ON
Maximum Dc Current:
600 mA
Product Length/Depth:
1.54 in
Sensor Type:
Fiberoptic
Product Height:
4.89 in
Amperage Rating:
600 mA
Operating Temperature Max:
158 °F
Operating temperature - min:
-13 °F
Warranty:
3 year
Input Voltage:
10-30 Vdc
Operating Mode:
Fiber-optic
Switch Classification:
Photoelectric
Contact Configuration:
Complementary NPN open collector
Compliances:
CE Marked
Certifications:
CSA Certified
Product Type:
Photoelectric Sensor
Department:
Electrical
Product Material:
Zinc Die-Cast
Connection Type:
Screw Terminal
Voltage Rating:
10-30 Vdc
Listing:
CSA Certified
Standards:
CE Marked
Product Group:
Wiring Devices
Product Subgroup:
Switches
Product Length:
1.54 in
Product Weight:
0.975 lb

Eaton E51MTB – Frequently Asked Questions

1) Does the Eaton E51MTB photoelectric sensor come with the fiber optic cable, or do I order that separately?
The E51MTB is the sensor head and receptacle only. It operates in fiber-optic mode and needs glass fiber optic cables to sense anything, so the cable assembly is a separate line item on your order. Without it the unit will not detect a target.
2) What output does the Eaton E51 fiber-optic sensor give my PLC, and will it work with a sinking input card?
Output is complementary NPN open collector, which means it sinks current and gives you both the normal and inverted state at once. NPN pairs with PLC input cards wired for sourcing field devices (sinking inputs on most catalogs). If your card requires PNP sourcing sensors, this one will not drive it. Switching capacity is 600 mA.
3) Can the Eaton E51MTB sensor take a washdown in a food plant?
It is built for it. The enclosure carries NEMA 4X, 6P and IP67 ratings, along with NEMA 3, 3S, 4, 6, 12 and 13, so it handles hose-down, temporary submersion and dust. The receptacle and body are die-cast zinc for corrosion resistance. Note the screw terminal connection: the wiring entry has to be sealed properly during install or the rating means nothing at the terminals.
4) Will the Eaton E51 fiber-optic sensor hold up in a freezer or near an oven?
Operating range is -13 degrees F to 158 degrees F. That covers most cold storage rooms and warm packaging lines. It is the sensor body that has to stay inside that window; the fiber cable is what you run into the hot or cold zone, which is a large part of why fiber-optic sensing gets used on those applications in the first place.
5) How much space do I need to mount the Eaton E51MTB in a control enclosure?
Footprint is 1.82 in wide by 1.54 in deep, with a height of 4.89 in. The height is the number that catches people out, so allow clearance above or below for that dimension plus the fiber cable bend radius and the screw terminal wiring.
6) Why choose a fiber-optic sensor like the Eaton E51MTB instead of a standard self-contained photoelectric?
Fiber-optic sensing puts only a passive glass cable at the detection point, with the electronics mounted somewhere safer. Use it when the target is small, the space is tight, or the sensing area is too hot, wet or electrically noisy for a sensor body. A self-contained photoelectric is simpler and cheaper to install when you have room at the target and a benign environment. The E51MTB is the amplifier end of that arrangement, in a die-cast zinc housing with screw terminals.
7) How do I check that the Eaton E51 sensor is actually seeing the target during setup?
There is an integrated LED that lights when the output is ON, so you can align the fiber ends and confirm detection without a meter. Because the output is complementary, the opposite state is available on the other output leg at the screw terminals if your logic needs the inverse.
8) Is the Eaton E51MTB acceptable for a Canadian jobsite?
It is CSA Certified and CE Marked, which covers the usual documentation an electrical inspector or plant engineering group asks for on a Canadian or European installation. Order it by Eaton MPN E51MTB.
How fast can I get the Eaton E51MTB delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Eaton E51MTB come with a warranty?
Absolutely. The Eaton E51MTB is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Eaton E51MTB?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Eaton E51MTB from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!