ABB REF542 Bay Control Andprotection Unit (SCU)

 Description

The ABB REF542 is a compact digital bay control and protection device designed for medium-voltage switchgear systems. It integrates protection, control, measurement, and monitoring functions into a single unit, making it ideal for feeder, transformer, and motor applications in power distribution networks.

Specifications

• Model Number: REF542

• Functionality: Protection relay + control device

• Voltage Range: 100–240 V AC/DC

• Frequency: 50/60 Hz

• Protection Functions:

  • Overcurrent (50/51)

  • Earth fault (51N/67N)

  • Voltage and frequency protection (27/59, 81)

  • Distance and differential protection (21, 87)

• Control Capabilities:

  • Circuit breaker control

  • Interlocking logic

  • Load shedding schemes

• Measurement Capabilities:

  • RMS current and voltage

  • Power factor, frequency, energy

• Interfaces:

  • RS-485, Modbus RTU

  • Optional Ethernet (IEC 61850)

• Display: Multilingual LCD with single-line diagram

• Mounting: Panel or rack mount

• Environmental Range:

  • Operating Temperature: –25°C to +70°C

  • Protection Class: IP40 (front panel IP52)

• Certifications: CE, UL, RoHS

• Lifecycle Status: Legacy product (replaced by REF542plus)

Other Attributes

• Series：ABB DCS/800xA
• Country of Origin:  Germany/Finland/Sweden
• Lead Time: In Stock, 2 Working Days

In Stock Hot Items of ABB

Our Competitive Brands

• - ABB Advant-800xA，Advant OCS，Bailey Infi 90 and Net 90，H&B Freelance 2000，DSQC Robots，IGCT / IGBT
• - GE General Electric Field Control, Genius I/O, QuickPanel, RX3i PacSystem, Series 90, Series 90, Series VersaMax
• - Allen Bradley Allen-Bradley SLC500, MicroLogix, CompactLogix, ControlLogix, PLC-5, Panel View,
• - Bently Nevada 3300 System, 3500 System
• - Honeywell 7800 Series, FSC, IPC, Mxopen, TDC 2000, TDC 3000, Experion PKS(C200,C300)
• - Yokogawa Centum CS - Centum VP, Centum XL - micro XL, FA-M3, ProSafe-PLC
• - Ovation, Foxboro, EPRO, Emerson DeltaV, Fuji, Siemens, HIMA, Prosoft, Invensys Triconex, ICS TRIPLEX, Woodward, Bachmann, Schneider

TEL: +86 18030205725     E-MAIL: manskiwong@cambia.cn

Question 1: Is Our Price Competitive?

NEW-GEN collaborates with over 50 countries worldwide. As a leading supplier in China, we can provide significant discounts to customers based on market demand.

Question 2: What Is The Warranty Period?

We offer a standard one-year warranty for all new and original items.

Question 3: What Payment Methods Do We Accept?

We accept 100% T/T (Telegraphic Transfer) before shipping. For items with a lead time, a 30% deposit is required in advance, with the remaining 70% balance due before shipping. If you have an agent in China, please contact us for RMB transfer.

Question 4: What Shipping Methods Do We Use?

We primarily utilize carriers such as FedEx, DHL, UPS, BRE, etc. If you have an account with any of these carriers, you can arrange the shipping yourself. Additionally, we offer free shipping to China freight forwarders.

Question 5: What Is Our Delivery Time?

Typically, delivery takes around 1-3 days after receiving the advance payment. For items with a quoted lead time, delivery will occur as per the specified lead time.

Question 6: How Do We Package The Goods?

Our packaging process involves multiple layers of protection. Initially, the product is placed in its original box, sealed with a label. Then, we add a layer of bubble wrap to safeguard against collisions during transportation. Finally, all products are securely packed in sturdy boxes for further protection.

Question 7: How Can Customers Contact Us And Request A Quote?

Customers can inquire via email, WhatsApp, WeChat, Skype, or any preferred communication platform. Simply reach out to us, and we'll promptly provide a quote tailored to your needs.