Description
ABB Multi-Function Relay REF541KM115AAAA – Circuit Protection
| Manufacturer | ABB |
| Part Number | REF541KM115AAAA |
| Power Supply | 110-240V AC / 24V DC |
| Made in | Finland |
| Mass | 1.8 kg |
| Size | 20 x 15 x 10 cm |
| Guarantee Period | 3 years |
| Approvals | IEC 60255, UL, CE, RoHS |
| Catalog Number | REF541KM115AAAA |
| Package Contents | 1x Multi-Function Relay, 1x Mounting Bracket, 1x Quick Start Guide, 1x CD with Manual |
| Number of Inputs/Outputs | 8 Digital Inputs, 4 Relay Outputs |
| Communication Protocol | Modbus RTU, Profibus DP |
| Protection Functions | Overcurrent, Earth Fault, Under/Over Voltage, Frequency |
| Display Type | LCD with Backlight |
| Operating Temperature | -25°C to 70°C |
| Mounting Type | Panel Mount (DIN Rail) |
Advanced circuit protection and monitoring for critical power systems, ensuring safety and uptime.
Key benefits: • Comprehensive protection against electrical faults • Easy configuration via intuitive interface • Modular design for flexible integration • Reduces downtime with fast fault detection
Typical applications: Industrial switchgear, motor control centers, power distribution panels, substations
Lifecycle: 10-15 years with regular maintenance
Our Advantages
Exact match for many brands
We make replacements easy with an exact match for almost any brand.
We use OEM catalogs to match your part number
Don't worry about ordering the wrong part by matching your part number with our OEM catalogs.
Competitively priced
Shop with confidence knowing we are offering very competitive pricing!
Orders usually ship the same day
Rest assured your order will arrive as soon as possible knowing we usually ship the same day.
Individually inspected
Before any package is shipped we carefully inspect every product to ensure quality.
Guaranteed for one full year
All of our New Surplus and Reconditioned products come with a 1 year warranty.
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Building a reputation for quality products at a reasonable price. Our inventory is far more extensive than what can be represented on our web site, so please call one of our knowledgeable salesmen with your specific needs.





William G. –
Product was exactly as described. Our engineers were pleased with the performance.