The ABB REF542Plus is a compact digital bay control technology solution designed for various medium voltage applications including feeder protection, transformer protection, and motor protection. It integrates measurement, monitoring, protection, control, and self-diagnosis functions into a single unit.
Description
ABB REF542PLUS Pulse Input Module for Industrial Control Systems
Product Overview
The ABB REF542PLUS is a high-performance pulse input module engineered for precision measurement in industrial control systems. It delivers accurate pulse counting and signal processing capabilities, making it essential for applications requiring exact data acquisition. This versatile module integrates seamlessly into medium voltage environments, combining measurement, monitoring, protection, control, and self-diagnosis functions in a single compact unit.
Technical Specifications
| Parameter | Value |
| Manufacturer | ABB |
| Model | REF542PLUS |
| Pulse Frequency Range | 0.01 Hz to 10 kHz |
| Input Signal | DC Voltage or Current |
| Power Supply | 24 V DC |
| Protection Rating | IP65 |
| Operating Temperature | -25°C to +70°C |
| Certification | CE, UL |


Applications & Compatibility
Ideal for substation automation and industrial environments requiring robust protection and real-time monitoring. The integrated communication protocol ensures interoperability with ABB and third-party control systems. Key applications include:
- Overcurrent, earth fault, and thermal overload protection
- Voltage regulation (undervoltage/overvoltage)
- Energy consumption monitoring
- Power factor optimization
Commonly paired with ABB Relion protection relays and SACE circuit breakers for complete power management solutions.
Our Services
We source genuine ABB products directly from overseas manufacturers, ensuring authentic stock with competitive pricing. All orders include:
- 1-year comprehensive warranty
- Expert pre-sales technical consultation
- Priority global shipping
- Dedicated after-sales support
Request pricing or inquire about custom configurations: Email our technical team.
Can’t find your required model? Contact us immediately for solution-oriented alternatives.
Contact:
Tel: +86 18020721390
Website: www.module-plc-dcs.com
Email: sakyzeng@foxmail.com








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