Eaton Heavy-Duty Watertight/Oi...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$23.83
Eaton Heavy-Duty Watertight/Oiltight Incandescent Replacement Lamp

Eaton Heavy-Duty Watertight/Oiltight Incandescent Replacement Lamp

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Model: 28-5185

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

$23.83
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Eaton Heavy-Duty Watertight/Oiltight Incandescent Replacement Lamp

The Eaton Heavy-Duty Watertight/Oiltight Incandescent Replacement Lamp is engineered for use with Eaton 10250T illuminated pushbutton operators. This 30.5 mm incandescent lamp operates on 24 VAC and installs with a T 3-1/4 bayonet mounting method for fast, tool-free replacement. Rated for full-voltage application and backed by CSA Certification and CE Marking, this replacement lamp delivers dependable illumination for industrial pushbutton and pilot-light assemblies.

Key Features

  • Lamp Size: 30.5 mm lamp sized specifically for Eaton 10250T illuminated operators.
  • Mounting Method: T 3-1/4 bayonet base for quick, secure lamp replacement without special tools.
  • Electrical Rating: 24 VAC lamp voltage (min/max) suited for full-voltage pushbutton circuits.
  • Light Unit Type: Incandescent light source for consistent, reliable illumination.
  • Application: Full voltage application designed for direct-wired illuminated control stations.
  • Compact Dimensions: .4 in product width, 1.1 in length/depth, and .3 in height for a low-profile fit inside operator housings.
  • Special Feature: Purpose-built replacement lamp for Eaton pushbutton accessory assemblies.

Certifications & Compliance

  • CSA Certified
  • CE Marked

Technical Specifications

  • Series: 10250T
  • Used With: 10250T illuminated operators
  • Mounting Method: T 3-1/4 bayonet
  • Lamp Voltage (Min/Max): 24 VAC
  • Size: 30.5 mm
  • Light Unit Type: Incandescent
  • Product Width: .4 in
  • Product Length/Depth: 1.1 in
  • Product Height: .3 in
  • Type: Pushbutton accessory
  • Warranty: 1 year

Typical Applications

  • Illuminated Pushbutton Operators and Pilot Lights
  • Industrial Control Panels and Machine Control Stations
  • Full-Voltage Pushbutton and Selector Switch Assemblies
  • Panelboard and Control Enclosure Maintenance
  • Replacement Parts for Eaton 10250T Series Operators

Why Eaton?

Eaton is a recognized manufacturer of industrial control components, and this Heavy-Duty Watertight/Oiltight Replacement Lamp is built to the same reliability standard as the 10250T operator series it serves. With CSA Certification and CE Marking, it provides dependable, code-compliant illumination for demanding full-voltage pushbutton applications. Choose genuine Eaton replacement lamps to maintain consistent, long-lasting performance across your control systems.

[{"name": "Product Type", "value": "Lamp"}, {"name": "Voltage Rating", "value": "24 VAC"}, {"name": "Series", "value": "10250T"}, {"name": "Connection Type", "value": "Bayonet"}, {"name": "Listing", "value": "CSA Certified"}, {"name": "Standards", "value": "CE Marked"}]

Manufacturer Resources

Product Specs

Product Width:
.4 in
Used With:
10250T illuminated operators
Mounting Method:
T 3-1/4 bayonet
Lamp voltage - min:
24 VAC
Product Size:
30.5 mm
Product Length/Depth:
1.1 in
Special Features:
Lamp
Application:
Full voltage
Product Height:
.3 in
Light unit type:
Incandescent
Product Type:
Incandescent Lamp
Warranty:
1 year
Product Category:
Lamps, lenses, and sockets
Series:
10250T
Compliances:
CE Marked
Lamp voltage - max:
24 VAC
Certifications:
CSA Certified
Department:
Electrical
Product Group:
Lighting
Product Subgroup:
Lamps & Bulbs
Product Weight:
0.01 lb
Product Length:
1.1 in

Eaton 28-5185 – Frequently Asked Questions

1) Will the Eaton 28-5185 lamp fit my 10250T illuminated pushbutton?
That is exactly what it is built for. The Eaton 28-5185 is a 30.5 mm replacement lamp for 10250T illuminated operators, using a T 3-1/4 bayonet base that pushes in and twists, so no tools are needed to swap it. If your operator is a 30.5 mm 10250T illuminated pushbutton or pilot light, this is the lamp that goes in it.
2) What voltage is the Eaton 28-5185 replacement lamp, and can I use it on a 120 V control circuit?
It is a 24 VAC lamp, minimum and maximum both stated at 24 VAC, so it is a single-voltage part. It is a full voltage application lamp, meaning it is wired directly at 24 VAC with no transformer or resistor in the circuit. Do not put it on a 120 V pilot circuit; on a 120 V station you need the 120 V version of the 10250T lamp instead.
3) Is this an LED or an incandescent lamp for the Eaton 10250T?
Incandescent. The 28-5185 uses an incandescent light source, not an LED. That matters for two reasons: incandescent draws more current than an LED of the same voltage, and it has a finite filament life, so panels with lamps that run continuously get replaced more often. If you want to move a station to LED, that is a different lamp part, not this one.
4) Does the bayonet base mean I can change the lamp without pulling the operator out of the panel?
Yes. The T 3-1/4 bayonet base means the lamp pushes in and quarter-turns into the socket. On a 10250T illuminated operator you pull the lens cap off the front and swap the lamp from the panel face, so the operator body and its wiring stay put. No tools, no disconnecting contact blocks.
5) Does the Eaton 28-5185 lamp carry any third-party approvals for a panel build?
It is CSA Certified and CE Marked. For a control panel headed to a Canadian plant or a machine going to Europe, those are the two marks usually asked for on the lamp itself, and they are stated on this part.
6) I maintain a lot of watertight pushbutton stations. Can I stock one lamp for the whole plant?
Only if those stations are all 24 VAC. The 28-5185 is fixed at 24 VAC minimum and maximum, so it covers every 30.5 mm 10250T illuminated operator running on a 24 V control circuit, regardless of lens color, since the color is in the cap and not in the lamp. Stations on 120 V or 240 V control need their own voltage-matched lamp. Sort your spares bin by control voltage, not by station.
7) What size is the Eaton 28-5185 lamp physically?
The lamp measures .4 in width, 1.1 in length/depth, and .3 in height, which keeps it inside the operator housing behind the lens without fouling the cap. The 30.5 mm figure refers to the operator panel size it serves, not the lamp glass itself, so a 30.5 mm 10250T station is the opening this belongs in.
How fast can I get the Eaton 28-5185 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 28-5185 come with a warranty?
Absolutely. The Eaton 28-5185 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 28-5185?
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 28-5185 from ZenSupply?
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