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Eaton E51 Series Glass Fiberoptic Lens Attachment
The Eaton E51 Series Glass Fiberoptic Lens Attachment is a precision optical accessory engineered to pair with fiberoptic sensors in industrial control and automation systems. Measuring 2.25 in wide, 2.25 in deep, and 2.75 in high, this glass lens attachment offers swivel adjustment for precise sensor alignment and includes a mounting hole for conduit entrance along with all required mounting hardware. Rated NEMA 3, 3S, 4, 4X, 6, 6P, 12, 13 and IP67, and UL Listed, it is built to perform reliably across a wide range of indoor and outdoor environments.
Key Features
- Compact Footprint: 2.25 in wide, 2.25 in deep, and 2.75 in high for space-conscious panel and sensor installations.
- Durable Glass Construction: Glass fiberoptic lens delivers dependable optical transmission for sensing applications.
- Swivel Adjustment: Built-in swivel adjustment allows the sensor to be precisely aimed after mounting.
- Conduit Entrance Mounting: Includes 1 mounting hole for sensor installation using a conduit entrance, plus all necessary mounting hardware.
- Wide Operating Temperature Range: Rated for -13° to 158°F (-25° to 70°C), supporting use in demanding thermal environments.
- Environmental Protection: NEMA 3, NEMA 3S, NEMA 4, NEMA 4X, NEMA 6, NEMA 6P, NEMA 12, and NEMA 13 ratings plus IP67 protection for indoor, outdoor, washdown, and wet-location use.
- 3-Year Warranty: Backed by Eaton's 3-year manufacturer warranty for long-term confidence.
Certifications & Compliance
- UL Listed
- NEMA 3, 3S, 4, 4X, 6, 6P, 12, 13 Rated
- IP67 Rated
Technical Specifications
- Product Type: Electrical Component
- Warranty: 3 year
- Product Width: 2.25 in
- Product Length/Depth: 2.25 in
- Product Height: 2.75 in
- Operating Temperature: -13° to 158°F (-25° to 70°C)
- Environmental Rating: NEMA 3, NEMA 3S, NEMA 4, NEMA 4X, NEMA 6, NEMA 6P, NEMA 12, NEMA 13, IP67
- Certifications: UL Listed
Typical Applications
- Industrial Automation and Sensing Systems
- Fiberoptic Sensor Installations
- Pushbutton and Control Panel Assemblies
- Washdown and Harsh Environment Applications
- Outdoor and Wet-Location Electrical Enclosures
- Renovation and New Equipment Installations
Why Eaton?
Eaton engineers the E51 Series Glass Fiberoptic Lens Attachment with durable glass construction, a swivel-adjustable mount, and UL Listed, NEMA and IP67-rated protection to withstand demanding industrial and outdoor conditions. Backed by a 3-year warranty, it delivers the dependable, code-compliant performance professionals expect from Eaton electrical and sensing components.
Manufacturer Resources
Product Specs
- Product Type:
- Pushbutton Lens
- Product Material:
- Glass
- Listing:
- UL Listed
- Standards:
- NEMA 3, 3S, 4, 4X, 6, 6P, 12, 13, IP67
- Series:
- E51
- Department:
- Electrical
- Product Group:
- Motor Control & Automation
- Product Subgroup:
- Push Buttons & Pilot Devices
- Certifications:
- UL Listed
Eaton E51KH3 – Frequently Asked Questions
1) Can the Eaton E51 fiberoptic lens attachment be used in a washdown or outdoor location?
Yes. The E51 Series glass fiberoptic lens attachment carries NEMA 3, 3S, 4, 4X, 6, 6P, 12 and 13 ratings plus IP67, which covers indoor dust and oil environments, outdoor rain and sleet, hosedown/washdown, and temporary submersion. The 4X rating is the one that matters for food plants and chemical areas where corrosion is the issue.
2) Does the Eaton E51 lens attachment come with mounting hardware or do I need to order it separately?
All required mounting hardware ships with the attachment, and it includes one mounting hole for installing the sensor through a conduit entrance. What you supply is the conduit and fitting itself, and the fiberoptic sensor it pairs with.
3) What temperature range will the Eaton E51 lens attachment hold up to?
It is rated from -13 to 158 degrees F (-25 to 70 degrees C). That covers unheated warehouses and outdoor enclosures in most climates, but it rules out oven-adjacent or furnace-side mounting where ambient runs above 158 F.
4) How much panel or bracket space do I need for the E51 fiberoptic lens attachment?
Plan on a 2.25 in by 2.25 in by 2.75 in envelope for the E51 glass lens attachment, plus clearance for the swivel to rotate once it is aimed. It mounts through a single hole using a conduit entrance.
5) What is the difference between the Eaton E51KH2 and E51KH3 lens attachments?
Both are glass fiberoptic lens attachments in Eaton's E51 Series and share the same environmental ratings and construction. They are two separate catalog numbers, E51KH2 and E51KH3, so order by the exact part number your sensor arrangement calls out rather than by series alone.
6) Can I aim the E51 fiberoptic lens after the bracket is mounted?
Yes, the attachment has a built-in swivel adjustment, so the sensor can be aimed at the target after the mounting hardware is tightened down. That is the reason to use this style rather than a fixed-position lens: you set the beam alignment on site instead of at the drill press.
7) Is the Eaton E51 fiberoptic lens attachment UL Listed for use on a control panel?
It is UL Listed. Combined with the NEMA 12 and 13 ratings, that suits it for pushbutton and control panel assemblies where an inspector wants a listed component on the enclosure face.
8) Is the E51 lens glass or plastic?
The lens is glass. That matters in plants where solvents, oils or abrasive washdown chemicals would craze a plastic lens over time.
How fast can I get the Eaton E51KH3 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 E51KH3 come with a warranty?
Absolutely. The Eaton E51KH3 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 E51KH3?
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