Description
Detailed Parameter Table
| Parameter Name | Parameter Value |
| Product Model | ABB 07AC91 GJR5252300R0101 |
| Manufacturer | ABB |
| Product Category | Motor Protection Relay |
| Rated Voltage | 24-240V AC/DC |
| Current Range | 0.1-10A (adjustable) |
| Protection Functions | Overload, Phase Loss, Locked Rotor, Ground Fault |
| Control Outputs | 2x Relay, 1x Analog (4-20mA) |
| Communication | Modbus RTU (RS485) |
| Display | LCD with 4-line interface |
| Operating Temperature | -20°C to +60°C |
| Protection Rating | IP20 (panel-mounted) |
| Dimensions | 96x96x95 mm (front panel) |
| Certifications | CE, UL, IEC 60947 |
ABB 07AC91 GJR5252300R0101
Product Introduction
The ABB 07AC91 GJR5252300R0101 is an advanced motor protection relay designed for comprehensive protection and monitoring of three-phase motors in industrial applications. Part of ABB’s renowned motor protection portfolio, this device combines precise measurement capabilities with intelligent protection algorithms to ensure optimal motor performance and longevity.
Featuring multiple protection functions including overload, phase imbalance, and ground fault detection, the 07AC91 GJR5252300R0101 provides reliable protection against electrical and mechanical motor faults. Its compact design and intuitive interface make it suitable for both standalone applications and integration into larger automation systems.
Core Advantages and Technical Highlights
Comprehensive Motor Protection:
Thermal overload protection with adjustable trip class (5-30)
Phase loss and imbalance detection prevents motor damage
Ground fault protection for enhanced electrical safety
Start-up supervision with adjustable stall time
Advanced Monitoring and Control:
Real-time current measurement (0.1-10A range)
Motor run-time counter for maintenance scheduling
Programmable relay outputs for flexible control
4-20mA analog output for process integration
User-Friendly Operation:
Clear LCD display with status and alarm indications
Simple push-button programming for quick setup
Modbus RTU communication for remote monitoring
Compact form factor saves panel space
Typical Application Scenarios
The ABB 07AC91 GJR5252300R0101 is widely used in:
Industrial Pumps and Fans:
Protects against overload and phase loss in HVAC systems
Monitors motor performance in water treatment plants
Conveyor Systems:
Prevents damage from locked rotor conditions
Provides early warning of mechanical issues
Compressors and Mixers:
Guards against thermal overload in continuous operation
Detects phase imbalances in heavy-duty applications
Manufacturing Equipment:
Integrated into machine safety systems
Provides motor diagnostics for predictive maintenance
ABB 07AC91 GJR5252300R0101
Related Model Recommendations
ABB 07KT97 – Higher current range motor protection relay
ABB CM-MPS – Modular motor protection system
ABB MS116 – Compact motor starter with integrated protection
ABB EMAX2 – Circuit breaker with motor protection
ABB ACS880 – Drive with built-in motor protection
ABB CP600 – HMI for motor monitoring
Installation and Commissioning
Installation Guidelines:
Mount on standard 96x96mm panel cutout
Ensure proper CT installation and wiring
Verify voltage supply matches device rating
Maintain minimum clearance for heat dissipation
Commissioning Steps:
Set motor rated current and protection parameters
Configure relay outputs for desired functions
Test protection functions via simulation
Verify communication settings (if used)
Document all settings for future reference
Maintenance Recommendations:
Periodically verify protection settings
Check CT connections for tightness
Monitor motor operating hours for maintenance
Keep firmware updated to latest version
Service and Warranty
ABB provides:
Standard 3-year warranty covering manufacturing defects
Global technical support through ABB service network
On-site service options for critical applications
Software updates for performance enhancements
Comprehensive documentation including manuals and certificates
The ABB 07AC91 GJR5252300R0101 represents ABB’s commitment to reliable motor protection and industrial safety, combining advanced technology with user-friendly operation for optimal system performance.
