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ABB REF543 Feeder Protection and Control Terminal

18 in stock

Manufacturer: ABB
Product No.: REF543
Product Type: Feeder Protection and Control Terminal
Condition: Brand New
Payment: T/T, Western Union
Weight: 7.7 kg
Dimensions: 28 mm x 129 mm x 74 mm
Shipping port: Xiamen
Warranty: 12 months

Description
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Shipping & Payment

Overview

The REF543 is a multifunctional feeder protection and control terminal designed for medium-voltage power distribution. ABB developed it to protect, control, measure, and supervise electrical feeders in substations and industrial networks. It supports various switchgear types and network configurations, including isolated neutral and resonant-earthed systems. The terminal also protects medium-sized three-phase motors and controls shunt capacitor banks. Its integrated PLC functions enable automation and sequence logic, reducing wiring complexity. Communication protocols include DNP3.0, Modbus, IEC 61850, Profibus-DPV1, and LON, allowing seamless integration into digital substations.

Technical Specifications

Model: REF543
Function: Feeder protection, control, and monitoring
Auxiliary Supply Voltage: 24–250 V DC
Digital Inputs: Multiple configurable binary inputs
Analog Inputs: Supports RTD and analog modules
Communication Protocols: DNP3.0, Modbus, IEC 61850, Profibus-DPV1, LON
Display Interface: Front panel HMI with LED indicators
Mounting Options: Panel or rack mount
Weight: 7.7 kg
Protection Class: IP20
Compatibility: Supports single/double busbar and duplex switchgear
Network Support: Isolated neutral, resonant-earthed, and partially earthed networks
Additional Features: Extensive PLC functions for automation and sequence control

Payment: T/T, Western Union.

Shipping port: Xiamen.

Lead time: Typically 1–3 working days after payment confirmation (subject to stock).

Worldwide delivery: We ship industrial automation parts to customers around the world. Freight is quoted with your RFQ.

F.A.Q.

Common questions about quotes, shipping, warranty and returns

Click Request a Quote on the product page and send us the part number, required quantity, and destination country. Our sales team will reply with current availability, pricing, and estimated delivery time.

In-stock items are normally prepared after payment and order confirmation. Most orders are dispatched from our warehouse in China, although the shipping location may vary depending on current stock.

Yes. We ship industrial automation parts to customers worldwide. Shipping cost and transit time depend on the destination, package weight, product size, and local import requirements.

We commonly use DHL, FedEx, UPS, and other international courier services. The carrier can be selected according to the destination, delivery speed, shipment size, and customer requirements.

Our products are generally covered by a 12-month warranty. Eligible products may also be returned under our 30-day refund policy. Please contact our team before returning any item to confirm the applicable terms and return instructions.