Overview
The Allen-Bradley 193-EA4CB is a Bulletin 193 solid-state overload relay engineered for dependable motor protection in industrial applications. This electronic relay combines adjustable trip class settings with advanced fault detection, including jam/stall and ground fault protection inhibited during motor starting. Built to integrate seamlessly with Bulletin 100-C contactors, the 193-EA4CB delivers the reliability and precision control engineers expect from Allen-Bradley motor protection devices.
Key Features
- Automatic/manual reset selectable operation for flexible control strategies
- Adjustable trip class (Class 10, 15, or 20) for customized motor protection curves
- Jam and stall detection with 400% fixed jam protection threshold
- Ground fault tripping capability with 30-second inhibit window to prevent nuisance trips
- Screw terminal connections for reliable, maintenance-friendly wiring
- Compatible with Bulletin 100-C contactors (C09–C23 frame sizes)
Technical Specifications
- Bulletin Number: 193 Solid-State Overload Relay Series B
- Reset Options: Automatic/Manual Reset
- Trip Class: Selectable 10, 15, or 20
- Contactor Compatibility: Bulletin 100-C (C09–C23 frame)
- Terminal Type: Screw Terminals
- Protection Functions: Overload, Jam/Stall, Ground Fault
- Ground Fault Inhibit Duration: ~30 seconds during motor starting
- Jam Protection Setting: 400% of full load current
- Operating Environment: Industrial control panels
Typical Applications
The 193-EA4CB is ideal for three-phase motor protection in:
- Manufacturing and process automation equipment
- Conveyor and material handling systems
- HVAC and pump systems
- Industrial machinery with variable load conditions
- Food and beverage production lines
Compatibility & Replacements
The 193-EA4CB integrates directly into existing Bulletin 100-C contactor control systems. As part of the classic Bulletin 193 product line, it is compatible with standard panel mount configurations and wiring practices established across thousands of industrial installations. For customers standardizing on current-generation solutions, Rockwell Automation offers the E100 Electronic Overload Relay series as a forward-compatible migration path. Verify contactor frame size (C09–C23) and voltage requirements before ordering to ensure proper installation.
