Description
ABB REF545KB133AAAA Protective Relay Module
Dear [Client Name],
We’re reaching out regarding the ABB REF545KB133AAAA protection relay – a critical component for safeguarding electrical systems in industrial environments. This module has proven particularly effective in power distribution networks where precision protection against electrical faults is essential.
| Specification | Details |
|---|---|
| Product Type | Digital Protective Relay |
| Model Number | REF545KB133AAAA |
| Current Rating | Up to 200A continuous |
| Protection Functions | Overcurrent, Earth Fault, Differential Protection |
| Voltage Range | Up to 690V AC |
| Communication | Modbus RTU, Ethernet |
| Environmental Rating | IP20, -25°C to +70°C operating temp |


This relay module is commonly used in:
- Industrial power distribution systems
- Metal processing facilities with high current loads
- Renewable energy installations (solar/wind farms)
- Petrochemical plants requiring explosion-proof protection
Works seamlessly with ABB’s:
– REF615 series protection relays
– PCM600 configuration software
– AC 800M controllers
Recently a customer in the oil refining sector mentioned how this relay prevented a major system failure during a voltage spike incident. The self-diagnostic features helped identify the issue before any damage occurred.
Why choose us?
✓ 12-month warranty (extends to 18 months for bulk orders)
✓ Immediate stock availability – 48-hour shipping
✓ Factory-certified testing documentation included
✓ Competitive pricing compared to authorized channels
For current pricing or to discuss your specific requirements, contact me via WhatsApp or email at 2645963284@qq.com. Personally, I’ve found this module works exceptionally well in environments with fluctuating loads – we’ve helped clients in steel manufacturing and data center power systems achieve 99.9% uptime after implementation.
Best regards,
Yezi
Guizhou Yuanmiao Automation Equipment Co., Ltd.
Specializing in critical control system components since 2015








Reviews
There are no reviews yet.