ABB REF543 Feeder Protection Terminal
The ABB REF543 (REF 54 series) is a multifunctional feeder protection and control terminal engineered for medium-voltage power distribution systems. As an Intelligent Electronic Device (IED), it integrates protection, measurement, control, supervision, and programmable logic automation into a single compact chassis for switchgear and substation panel installation.
Protection Capabilities and Signal Interface
The terminal accommodates up to 9 or 10 analog measurement channels depending on hardware configuration, supporting continuous monitoring of current, voltage, system frequency (50/60 Hz), active/reactive power, and power factor. Hardware interfaces include 25 digital inputs and 18 output relays for breaker operation, interlocking schemes, and system protection functions including overcurrent, earth-fault, directional voltage, thermal overload, and automatic reclosing.
Control, Logic, and Lifecycle Status
Local operation is supported via a front-panel graphical LCD and keypad HMI. Internal Programmable Logic Controller (PLC) capabilities allow custom automation sequences and disturbance recording across analog and digital channels. Native SPA and LON protocols are supported directly, while IEC 60870-5-103, DNP 3.0, Modbus, and IEC 61850 protocol integration are achieved via dedicated communication adapters. Note that the REF543 product line has been officially discontinued by ABB since 2022.
| Parameter | Specification |
|---|---|
| Model | REF543 |
| Brand | ABB |
| Product Series | REF 54 Series |
| Product Type | Feeder Protection and Control Terminal |
| System Frequency | 50/60 Hz |
| Analog Measurement Channels | 9 or 10 (configuration dependent) |
| Digital Inputs | 25 |
| Output Relays | 18 |
| Human Machine Interface | Graphical LCD and keypad |
| Native Protocols | SPA, LON |
| Adapter Protocols | IEC 60870-5-103, DNP 3.0, Modbus, IEC 61850 |
| Operating Temperature | -10 deg C to +55 deg C |
| Weight | 7.7 kg |
| Product Status | Discontinued by manufacturer (2022) |
Frequently Asked Questions
Q: Is the ABB REF543 still in active production? A: No, the REF543 series was officially discontinued by ABB in 2022.
Q: What communication protocols does the REF543 support for SCADA integration? A: The device natively supports SPA and LON bus protocols, while IEC 61850, Modbus, DNP 3.0, and IEC 60870-5-103 can be integrated using optional communication adapters.
Q: How many I/O channels are available on the REF543 terminal? A: The unit provides 25 digital inputs, 18 output relays, and 9 or 10 analog measurement channels depending on the specific model configuration.
| Quick Quotes | Receive price & availability FAST from our dedicated customer service team. |
|---|---|
| Delivery | Expedited, Freight, And International Shipping Available. |
| Condition | 100% New with Original Package |
| Payment | We accept American Express, Discover, MasterCard, PayPal, and Visa. Our site is secured by RapidSSL. |
| Shipping Port | ShangHai, Xiamen |
| Warranty | 12 Months |
| Q: Is Our Pricing Competitive? |
| A: Yes, we collaborate with over 50 countries worldwide. As a top supplier in China, we offer significant discounts based on market trends. |
| Q: What Is the Warranty Period? |
| A: All our new and original products come with a standard one-year warranty. |
| Q: What Payment Methods Do We Accept? |
| A: We require 100% T/T (Telegraphic Transfer) payment before shipping. For items with a lead time, a 30% deposit is needed upfront, and the remaining 70% is due before shipping. If you have a representative in China, you can arrange an RMB transfer through them. |
| Q: What Shipping Methods Do We Use? |
| A: We primarily use FedEx, DHL, UPS, and BRE for shipping. If you have an account with any of these carriers, you can handle shipping directly. We also offer free shipping to China-based freight forwarders. |
| Q: What Is Our Delivery Time? |
| A: Delivery usually takes 1-3 days after receiving the initial payment. For items with a lead time, shipping will occur according to the specified schedule. |
| Q: How Do We Package the Goods? |
| A: We ensure safe packaging with multiple layers of protection. Products are first placed in their original boxes and sealed with labels. A layer of bubble wrap is then added for collision protection during transit. Finally, the items are packed securely in durable boxes. |
| Q: How Can Customers Contact Us and Request a Quote? |
| A: You can reach out to us via email, WhatsApp, WeChat, Skype, or your preferred communication platform. Contact us with your needs, and we'll provide a prompt, customized quote. |
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