Description
Cutler-Hammer E50RB Heavy-Duty Limit Switch Base
Product Dimensions:
Here is the detailed product information for the Cutler-Hammer / Eaton E50RB heavy-duty limit switch component, structured in English according to your requested sections.
1. Product Description (产品详细说明)
The Cutler-Hammer E50RB (manufactured by Eaton) is a heavy-duty plug-in limit switch receptacle. It serves as the base platform for Eaton’s industry-standard E50 series modular limit switches.
Designed with a plug-in architectural setup, the E50RB houses the structural wiring terminal block and mounts directly to the machinery surface. It is engineered to pair with an E50 series double-pole switch body (such as the E50SB) and an operating head (rotary, plunger, or wobble) to form a complete operational limit switch. Constructed from premium die-cast zinc, it provides exceptional physical and environmental defense in severe industrial conditions.
2. Technical Parameters (产品参数)
| Parameter | Specification |
| Manufacturer / Brand | Eaton / Cutler-Hammer |
| Model / Catalog Number | E50RB |
| Component Type | Receptacle (Base module) |
| Number of Poles | 2-Pole (Double Pole) |
| Wiring Terminals | 9-Terminal Screw Blocks |
| Contact Configuration | Supports 2NO – 2NC (When paired with a 2-pole switch body) |
| Conduit / Wiring Entrance | 1/2-inch NPT Threaded Conduit Entrance |
| Mounting Type | Surface Mount (Front/Rear location) |
| Enclosure Material | Heavy-duty Die-Cast Zinc |
| Environmental Protection | NEMA 1, 3, 3S, 4, 4X, 6, 6P, 13 and IP67 |
| Operating Temperature | -40°F to 250°F (-40°C to 121°C) |
| Dimensions (L x W x H) | 2.92 in x 1.54 in x 1.06 in |
| Product Weight | 0.11 lbs (approx. 50g) |
| Certifications & Compliance | UL Listed, CSA Certified, RoHS Compliant |
3. Product Advantages (产品优势)
- Modular Plug-In Design: The plug-in architecture significantly simplifies field replacement. Once wired into place during initial installation, the switch body or operating head can be swapped out in seconds without disconnecting any of the field wiring. This minimizes machinery downtime and slashes maintenance inventory costs.
- Extreme Chemical & Fluid Resistance: Built with standard Viton® gaskets and seals, the E50RB offers premium protection against corrosive synthetic coolants, harsh cutting fluids, cleansing solvents, and heavy hydraulic oils commonly found in modern manufacturing lines.
- Highly Rugged Construction: The die-cast zinc housing provides maximum mechanical durability. It offers structural resistance against high physical impact, vibrations, and harsh workplace environments.
- Universal Standards Compatibility: Its standardized mounting dimensions easily accommodate both U.S. and European DIN layout expectations, making it a drop-in retrofitting option for upgrading legacy machinery.
4. Important Considerations / Precautions (注意事项)
- Component Only: The E50RB is only the base wiring receptacle. To have a functioning limit switch, you must separately buy and install a compatible E50 Switch Body (e.g., E50SB) and an E50 Operating Head/Lever.
- Torque Settings & Seals: Ensure that the conduit connections are properly tightened and appropriate thread sealants are applied to preserve the NEMA 6P / IP67 submersion ratings.
- Wiring Safety: Disconnect all power sources before opening the housing or engaging with screw terminals. Verify that your field wire gauges align neatly with the 9-terminal configuration to avoid shorting across adjacent contact lines.
- Polarity Check: When combining this receptacle with double-pole units, check your wiring map to guarantee parallel or series configurations mirror your circuit logic requirements exactly.
5. Product Applications (产品应用)
The Cutler-Hammer E50RB is a staple component in heavy-duty automation, materials handling, and harsh-processing fields. Common applications include:
- Machine Tools & CNC Equipment: Monitoring door interlocks, tool-changer positions, and heavy axis travel limits where exposure to coolants and flying metal shavings is persistent.
- Automotive Assembly Plants: Tracking robotic carrier lines, indexing tables, and welding cell gates.
- Water & Wastewater Treatment Facilities: Operating in high-humidity or occasionally flooded environments demanding reliable NEMA 6P or IP67 sealing.
- Material Handling & Conveyors: Position sensing and mechanical routing controls on heavy distribution conveyors, sorting gates, and lifting bays.
Shipping Port: Xiamen, China
Payment: Bank of Chicago, Bank of Singapore
Express cooperation: fedex, DHL, UPS and your express account
Service: Professional Sales provides 24 hours /7 days online service
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