Overview
The Allen-Bradley 193-EA1FB is a solid-state electronic overload relay from the E1 Plus series, engineered for reliable motor protection in industrial automation applications. This E1 Plus electronic motor protection overload relay is designed for adjustable coverage from 3.7 to 12 amps, with Class 10 overload protection and a visible trip indicator. The relay uses electronic true RMS current measurement across all three phases, delivering accurate overload detection even under unbalanced load conditions.
Key Features
- Adjustable coverage from 3.7 to 12 amps with Class 10 overload protection and visible trip indicator
- Integrated NO/NC auxiliary contacts with wide-range current adjustment for precise coordination with motor full-load ratings
- Continuously monitors true RMS current of each phase and calculates a thermal model of the motor for precise trip behavior
- Operates reliably within a temperature range of -20°C to +40°C
- Communication-enabled, supporting DeviceNet and EtherNet/IP protocols via optional modules for integration with Rockwell Logix control systems
- Compact E1 Plus design simplifies installation in modern motor control panels
Technical Specifications
Adjustment range: 3.7 to 12 Amps, Trip Class 10. Features manual reset, self-powered operation, phase loss protection, 1 N.O. and 1 N.C. isolated auxiliary contacts, manually operated trip function, visible trip indicator, compact size, and low energy consumption (150 mW). The unit includes ambient temperature compensation for stable operation across varying environmental conditions.
Typical Applications
The 193-EA1FB is ideal for motor protection in general industrial applications, including machine tools, conveyors, pumps, fans, and motor control centers. It is suitable for use with NEMA Size 00 and 100-M05/100-C25 contactors. The electronic design provides superior protection compared to traditional bimetallic overload relays, especially under phase-loss conditions and unbalanced motor loads.
Compatibility & Replacements
Compatible With
- NEMA Size 00, 100-M05, and 100-C25 motor control contactors
- Allen-Bradley Bulletin 100 motor starters
- ControlLogix and CompactLogix platforms (with communication modules)
- DeviceNet and EtherNet/IP networks via optional communication modules
Replaces / Drop-In Replacement For
The 193-EA1FB replaces legacy thermal overload relays in comparable current ranges and is compatible with existing Bulletin 100 motor starter installations. Note: Bulletin 193 IEC and 592 NEMA E1 Plus Electronic Overload Relays are discontinued; Rockwell recommends migrating to E100 Electronic Overload Relays for new designs. Verify compatibility with your specific contactor base before ordering.
Works With
- DeviceNet and EtherNet/IP protocols with optional communication modules for Logix-based systems
- Allen-Bradley Integrated Architecture software platforms
- External reset buttons and optional communication adapters (193-ETN Ethernet module)
- Motor control centers using screw-type terminals
