ABB REF545 REF545KB133AAAA
Brand ABB
Model REF545
Full Model REF545KB133AAAA
Order Number REF545KB133AAAA
Product Name Medium Voltage Feeder Protection & Control Terminal
Origin Finland / Germany
HS Code 85371090
Dimensions Approx. 144 × 266 × 350 mm (19-inch rack mount)
Weight Approx. 6.8 kg
Ambient Temperature
– Operating: -10°C to +55°C
– Storage: -40°C to +70°C
Protection Rating
Front: IP54; Rear terminals: IP20
Supply Voltage 85–265 VAC / 80–300 VDC
Rated Frequency 50/60 Hz
Input Specifications
Current inputs: 1/5 A (nominal)
Voltage inputs: 100/110 V (phase/neutral)
Digital inputs: 34 optically isolated channels
Output Specifications
Relay outputs: 26 changeover contacts
Analog outputs: 4 × 0–20 mA (optional)
Features
Comprehensive feeder protection (overcurrent, earth fault, directional, over/under voltage)
Integrated PLC logic for automation sequences
High-accuracy power measurement & monitoring
16-channel fault recording (2 kHz sampling)
Multi-protocol communication: IEC 61850, IEC 60870-5-103, Modbus, DNP3.0, Profibus DP
LCD display + keypad for local operation
8 configurable alarm LEDs
Galvanic isolation on all I/O
Functions
Protection, control, measurement & supervision of medium-voltage feeders
Circuit-breaker control & interlocking
Real-time condition monitoring & fault diagnostics
Time-stamped event logging (48-hour capacitor backup)
Seamless integration into substation automation systems
Advantages
All-in-one protection, control & automation in a single unit
Fast fault response (< 30 ms) for high system stability
Flexible I/O & communication for diverse substation setups
Robust EMC performance for harsh industrial environments
Easy configuration via ABB CAP 505 software
Long-term reliability & low maintenance
Wide power supply tolerance for unstable grids
Applications
Medium-voltage distribution substations (1–36 kV)
Industrial power systems (steel, chemical, cement plants)
Renewable energy farms (wind, solar) interconnection protection
Railway & urban transit traction power supplies
Motor & capacitor bank protection
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