Eaton Heavy-Duty Plug-In Limit...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$491.73
Eaton Heavy-Duty Plug-In Limit Switch, 2NO-2NC Screw Terminal

Eaton Heavy-Duty Plug-In Limit Switch, 2NO-2NC Screw Terminal

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Model: E50NN1

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

$491.73
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Eaton Heavy-Duty Plug-In Limit Switch, 2NO-2NC Screw Terminal

The Eaton Heavy-Duty Plug-In Limit Switch is a special purpose position-sensing switch built for demanding industrial control applications. Featuring a neutral position with 5° travel, screw terminal connections, and a 2NO-2NC contact configuration, this switch is rated 10A at 12 Vac and 1A at 125 Vdc for reliable low-voltage signal and control duty. Housed in a die cast zinc enclosure and rated across multiple NEMA and IP67 environmental classifications, it's engineered from the E50 heavy duty plug-in series for long service life in harsh operating environments, with an operating temperature range of 14°F to 201°F (-10°C to 94°C).

Key Features

  • Contact Configuration: 2NO-2NC contact arrangement for dual-circuit switching in a single unit.
  • Contact Rating: 10A at 12 Vac and 1A at 125 Vdc for dependable low-voltage control signaling.
  • Durable Construction: Die cast zinc enclosure for strength and resistance to demanding industrial environments.
  • Screw Terminal Connections: Simplifies field wiring and provides a secure, vibration-resistant termination point.
  • Neutral Position Actuation: Operates with a 5° travel neutral position for precise, repeatable actuation.
  • Wide Operating Temperature Range: Rated 14°F to 201°F (-10°C to 94°C) for use in extreme thermal conditions.
  • Series: Part of the Eaton E50 heavy duty plug-in limit switch series (E50NN).

Certifications & Compliance

  • NEMA 1, NEMA 3, NEMA 3S, NEMA 4, NEMA 4X, NEMA 6, NEMA 6P, and NEMA 13 rated
  • IP67 rated for protection against dust and temporary immersion

Technical Specifications

  • Maximum DC current: 1 A
  • Warranty: 1 year
  • Enclosure material: Die cast zinc
  • Connection: Screw terminal
  • Contact configuration: 2 NO-2 NC
  • Maximum AC current: 10 A
  • Operating temperature range: 14°F to 201°F (-10°C to 94°C)

Typical Applications

  • Industrial Machinery Position Sensing
  • Conveyor and Material Handling Systems
  • Automated Equipment Control Circuits
  • Heavy-Duty Industrial Control Panels
  • Safety Interlock and End-of-Travel Detection
  • Wet, Dusty, and Harsh-Environment Installations

Why Eaton?

Eaton engineers the E50 heavy duty plug-in limit switch series with a die cast zinc enclosure and broad NEMA and IP67 environmental ratings to deliver dependable, code-compliant performance in tough industrial settings. With screw terminal wiring, a defined 2NO-2NC contact configuration, and a wide operating temperature range, this limit switch is built for consistent, long-term position-sensing reliability that professionals can specify with confidence.

Manufacturer Resources

Product Specs

Enclosure Material:
Die cast zinc
Connection:
Screw terminal
Maximum Dc Current:
1 A
Amperage Rating:
10A at 12 Vac, 1A at 125 Vdc
Operating Temperature Max:
201 °F
Operating temperature - min:
14 °F
Warranty:
1 year
Series:
E50 Heavy Duty Plug In
Contact Configuration:
2 NO-2 NC
Maximum Ac Current:
10 A
Product Type:
Limit Switch
Department:
Electrical
Product Material:
Die Cast Zinc
Connection Type:
Screw Terminal
Configuration:
2NO-2NC
Product Group:
Wiring Devices
Product Subgroup:
Switches

Eaton E50NN1 – Frequently Asked Questions

1) What is the difference between Eaton E50NN1 and E50NN2 limit switch heads?
Both are neutral position plug-in heads from the Eaton E50 heavy duty series, and the difference is the travel angle before the contacts transfer. The E50NN1 is the 5 degree travel version and the E50NN2 is the 15 degree version. Pick the 5 degree head when you need tight, repeatable end-of-travel detection on a short actuator movement; the 15 degree head tolerates more overtravel and cam slop before it acts, which is usually the safer choice on conveyors and material handling where the target does not stop in the same spot every cycle.
2) Can this limit switch be washed down or mounted outdoors?
Yes. The E50NN carries NEMA 1, 3, 3S, 4, 4X, 6, 6P and 13 ratings plus IP67, so it handles washdown, dust, oil-laden air and temporary immersion. The 4X rating covers corrosive wash environments and the 6P rating covers prolonged submersion conditions. The body is die cast zinc. Its temperature window is 14 to 201 degrees F (-10 to 94 degrees C), so unheated outdoor use below 14 F is outside the rating.
3) Does the Eaton E50NN give me two separate circuits, or just one?
Two. The contact block is 2NO-2NC, so you get two independent normally open and two normally closed contacts in a single switch. That lets one unit both stop the drive and signal the PLC or light a panel indicator without adding a second switch at the same position. All four contacts share the same 10A at 12 Vac / 1A at 125 Vdc rating.
4) How does the E50NN wire in, and do I need special connectors?
Field wiring lands on screw terminals, so standard stranded control wire with ferrules or spade terminals goes straight in. No crimp plug, pigtail, or connector kit is required. Screw terminals also hold up better than push-in terminals on machinery that vibrates, which is the normal duty for this switch.
5) What does plug-in mean on the Eaton E50 limit switch, and why would I choose it over a fixed-body switch?
Plug-in refers to the E50 construction where the switch body separates from the wired receptacle base. The wiring stays terminated in the base, so a failed unit is swapped without re-landing conductors. On a production line that is the difference between a few minutes of downtime and pulling wire out of a conduit body. A one-piece fixed switch costs less to buy but every replacement means rewiring in place.
6) Is a neutral position limit switch the right type for end-of-travel detection?
It depends which direction matters. A neutral position head like the E50NN operates from a center rest position and can be actuated from either side, then returns to neutral, so it suits reversing travel, rotating cams, and detection where the target passes in both directions. If you only need a single one-way trip at the end of a stroke, a standard side rotary or plunger head is simpler. For the E50NN you also choose the trip angle: 5 degrees on the E50NN1 or 15 degrees on the E50NN2.
7) Can I use this switch on a 125 VDC control circuit?
Yes, up to 1 amp. The E50NN is rated 1A at 125 Vdc, which covers relay coils, PLC inputs and interlock signals on a DC control bus. Do not run a DC solenoid or brake coil above that through the contacts; DC arcing at 125 volts will pit them fast if the load exceeds the rating.
8) Will a die cast zinc limit switch body hold up around coolant and cleaning chemicals?
Die cast zinc is the standard heavy duty housing material for machine-tool and conveyor limit switches, and on the E50NN it is paired with NEMA 4X and IP67 ratings, which cover corrosion-resistant washdown and temporary immersion. It is a good fit for coolant spray, wet packaging lines, and dusty conveyor work. For aggressive chemical process areas a stainless or non-metallic housing is the usual alternative.
How fast can I get the Eaton E50NN1 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 E50NN1 come with a warranty?
Absolutely. The Eaton E50NN1 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 E50NN1?
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
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