The ABB REF545KB133AAAA is a high-performance relay protection module designed for critical applications requiring advanced protection against faults and disturbances. It ensures reliable operation and long-term performance in industrial settings.
Description
ABB REF545KB133AAAA – Protective Relay for Power Systems
The ABB REF545KB133AAAA is a precision-engineered protective relay module designed for fault detection and system protection in electrical distribution networks. It delivers reliable performance in industrial environments, safeguarding equipment against overloads, phase failures, and ground faults while minimizing downtime.
Technical Specifications
| Manufacturer | ABB |
| Model | REF545KB133AAAA |
| Voltage Rating | Up to 380V |
| Current Rating | Up to 25A |
| Protection Functions | Overcurrent, Overvoltage, Undervoltage, Phase Failure, Ground Fault |
| Dimensions | 297.18 x 35.56 x 175.26 mm |
| Weight | 1.2 kg |
| Operating Temperature | -40°C to +80°C |
| Certifications | CE, UL, IEC, RoHS |


Applications & Compatibility
Ideal for transformer protection, motor control circuits, and distribution panels in manufacturing plants, power stations, and substations. Features Modbus RTU integration for seamless connectivity with PLC systems like ABB AC500 and third-party controllers. Compatible with ABB’s REF54x series and industrial switchgear.
Our Services
We supply genuine ABB components sourced directly from authorized channels. Benefit from competitive pricing, same-day shipping, and 1-year warranty on all products. Our technical team provides pre-sales consultation and installation support. Contact us for specific pricing or if you require alternative models. As a one-stop industrial automation supplier, we maintain extensive stock for rapid global delivery.
Contact: Tel: +86 18020721390 |
Web: module-plc-dcs.com |
Email: sakyzeng@foxmail.com







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