Overview
The Eaton Cutler-Hammer E50SA is a Series A2 limit switch body engineered for heavy-duty industrial applications requiring reliable, low-maintenance switching. As part of the industry-standard E50 modular plug-in switch family, the E50SA provides versatile design, high reliability, and cost-effective installation across machine tool, automotive, waste water treatment, and general manufacturing environments.
Key Features
- 1NO-1NC (SPDT) contact configuration with 10 Amp capacity at 600VAC
- Zinc die-cast enclosure with IP67 sealing and standard Viton gaskets/seals for exceptional chemical resistance
- NEMA rated for Types 1, 2, 3, 3S, 4, 4X, 6, 6P, and 13 enclosures
- UL Listed and CSA Certified for industrial control equipment
- Plug-in connection design enables fast replacement and modular inventory management
- Mounting dimensions accommodate both U.S. and DIN standards for easy retrofit
Technical Specifications
The E50SA switch body is rated for continuous duty across harsh industrial environments with robust mechanical and electrical characteristics:
- Current Rating: 10 Amps @ 240VAC; 1 Amp @ 250VDC
- Voltage Rating: 600VAC maximum
- Contact Form: SPDT (1 Normally Open, 1 Normally Closed)
- Poles: Single pole, 5-terminal configuration
- Operating Temperature: -10°C to +121°C (14°F to 250°F)
- Mechanical Life: 10 million cycles
- Electrical Life: 1 million cycles at full load
- Enclosure Material: Die-cast zinc with corrosion resistance
- IP Rating: IP67 (dust-tight and water-jet resistant)
- Connection Type: Plug-in modular design with 1/2 NPT conduit entries
- Certifications: UL Listed, CSA Certified, CE marked
- Weight: 0.35 lbs (540 gm)
Typical Applications
The E50SA limit switch body serves as the foundation for position-sensing and safety interlocking in demanding industrial environments:
- Machine Tools: Part detection, limit position sensing, spindle safety interlocks
- Automotive Manufacturing: Assembly line indexing, press tooling protection, conveyor control
- Waste Water Treatment: Pump operation status, gate/valve position monitoring
- Packaging and Material Handling: Carton detection, hopper level sensing, loading dock interlocks
- Heavy Equipment: Door/hatch interlocks, boom position monitoring, safety lockouts
Compatibility & Replacements
Compatible With
- Eaton E50 Series heavy-duty plug-in limit switches and operating heads
- E50 modular switch components and receiver receptacles (NEMA Types 1, 2, 3, 3S, 4, 4X, 6, 6P, 13)
- Standard control relay and PLC input modules rated for 240–600VAC signals
- DIN-mount and surface-mount industrial control enclosures
Replaces / Drop-In Replacement For
- Legacy Eaton E50SA A1 and earlier revision switch bodies with identical mounting footprint
- Other heavy-duty single-pole limit switch bodies requiring NEMA 4/4X/6 sealing and 600VAC ratings
- Note: Verify physical operating head and receptacle compatibility with your system integrator before substituting in existing installations
Works With
- Standard 120/240VAC industrial control circuits and 24VDC logic systems via relay output
- PLC safety modules and hard-wired interlocking circuits
- Eaton, Siemens, Allen-Bradley, and Omron control systems supporting discrete input modules
- Industrial safety standards: NFPA 70 (NEC), CSA C22.1, EN 60204-1 machinery directives
