Overview
The Eaton Cutler-Hammer E50BT3 is a modular limit switch component engineered for use within Eaton’s industry-standard E50 series heavy-duty plug-in limit switch platform. The E50BT3 features a top push roller actuator with spring return, delivering reliable position sensing and emergency stop functionality across industrial automation and motion control applications. This component is part of the versatile, modular E50 family, which is renowned for low maintenance costs and flexible system design.
Key Features
- Top push roller design for reliable operator engagement and precise position detection
- Spring return mechanism ensures consistent operation after activation
- Modular construction compatible with E50 series limit switch bodies and receptacles
- Die-cast enclosure with chemical resistance to hydraulic fluid and cleaning agents
- UL and CSA approved for safety-critical industrial applications
- Low maintenance design with high reliability for extended service life
Technical Specifications
The E50BT3 component is designed to integrate seamlessly into Eaton E50 series assemblies:
- Series: E50 Heavy-Duty NEMA Limit Switch
- Actuator Type: Top Push Roller with Spring Return
- Component Classification: Operating Head / Limit Switch Component
- Certifications: UL Recognized, CSA Certified
- Condition: New – Open Box
- Compatibility: E50 Series limit switch bodies (E50SA, E50SB, E50ST, etc.)
Typical Applications
The E50BT3 spring return top push roller component is ideal for:
- Machine tool position sensing and interlocking
- Emergency stop circuit confirmation and feedback
- Conveyor and material handling equipment limit detection
- Industrial automation systems requiring modular, field-replaceable components
- Retrofit and upgrade installations where legacy limit switch compatibility is needed
Compatibility & Replacements
Compatible With
- Eaton E50 series heavy-duty limit switch bodies (E50SA, E50SB, E50ST, E50DN, E50DT, and E50DM operating heads)
- E50 series limit switch receptacles
- Industrial automation platforms requiring NEMA 1, 3, 3S, 4, 4X, 6, 6P, 13 and IP67 enclosure compatibility
- Fieldbus and manual control systems using standard industrial limit switching
Replaces / Drop-In Replacement For
The E50BT3 is a component-level replacement for worn or damaged E50 series top push roller spring return heads. Verify with your system integrator or Eaton technical documentation to confirm fitment with existing switch bodies before ordering.
Works With
- All E50 series limit switch body types and configurations
- Standard industrial control relay and PLC input circuits
- Manual control systems and hardwired safety interlocks
- Motion control systems and servo brake verification circuits












