Overview
The Allen-Bradley 193-1EFCB E100 is a next-generation electronic overload relay engineered for three-phase motor protection in IEC control systems. Part of Allen-Bradley’s scalable solution portfolio, this solid-state relay delivers accurate current measurement, temperature modeling, and phase-loss detection to help minimize downtime and extend motor life. The unit mounts directly to bulletin 100-C IEC contactors (sizes 100-C09 through 100-C23), making it a drop-in replacement for legacy thermal overload relays in industrial automation, HVAC, pump, and material handling applications.
Key Features
- Selectable Trip Class 10, 15, 20, 30: Configurable response time for soft-start, variable frequency drive (VFD), and standard motor applications
- Manual or Automatic Reset: Operator-selectable reset mode for flexible control strategy integration
- Wide 5:1 Current Adjustment Range: Single unit covers 1–5 A full-load amperage—reduces parts inventory
- Phase-Loss and Imbalance Protection: Self-powered detection eliminates auxiliary power supply requirement
- Solid-State Reliability: Accurate thermal modeling and repeatable protection vs. thermal-magnetic alternatives
Technical Specifications
The Allen-Bradley 193-1EFCB incorporates robust semiconductor technology and field-proven Allen-Bradley engineering for precision motor protection in demanding industrial environments.
Typical Applications
- Three-phase squirrel-cage induction motors in factory automation and production lines
- HVAC fan and pump motors in building systems and process cooling
- Conveyor, compressor, and material handling equipment protection
- IEC-based control cabinets requiring integrated electronic overload detection
- Soft-start and VFD-driven motor circuits requiring class 20 or 30 trip protection
Compatibility & Replacements
Compatible With
- Allen-Bradley Bulletin 100-C IEC Contactors (sizes 100-C09, 100-C12, 100-C16, 100-C23)
- Three-phase AC motor control systems (50/60 Hz)
- IEC-standard control architectures and electrical standards
Replaces / Drop-In Replacement For
- Thermal-magnetic overload relays in equivalent 1–5 A current rating
- Legacy Allen-Bradley 193 series overload relays on compatible contactors
Works With
- Allen-Bradley IEC contactor control schemes
- Soft-starters and variable frequency drives (VFD) where compatible trip class is selected
- Standard three-phase AC motor circuits at 50/60 Hz
