Description
The MVR 0.44-10KA is a high-performance metal-oxide surge arrester designed for reliable overvoltage protection in low to medium voltage industrial power systems. This compact indoor module safeguards critical equipment from transient surges caused by lightning, switching operations, and atmospheric disturbances, ensuring operational continuity in harsh environments. With its line discharge class 1 energy absorption capability (up to 3.4 kJ/kVUc), it excels in protecting rotating machines, cable sheaths, and transformers.
Rated for AC systems from 0.44 kV, the MVR 0.44-10KA features a spark-gap-free design for maintenance-free operation and rapid response to faults. Its robust construction supports both AC and DC applications, delivering precise voltage clamping and high thermal stability for safety-critical setups like power distribution and motor drives.
Parameter Values
| Parameter | Value |
|---|---|
| Product Model | MVR 0.44-10KA |
| Brand | ABB |
| Warranty | One Year |
| Input Voltage | 0.44 kV AC/DC (Uc max) |
| Operating Temperature | -40°C to +55°C |
| Storage Temperature | -55°C to +70°C |
| Response Time | < 25 ns (8/20 µs waveform) |
| Protection Class | IP20 (indoor) |
| Accuracy Class | ±5% (residual voltage) |
| Output Frequency | 50/60 Hz |
| Rated Current Range | 10 kA (nominal discharge) |
| Communication Interface | N/A (passive protection) |
| Supported Protocols | N/A |
| Overload Capacity | 10 kA (line discharge class 1) |
| Dimensions | 95 x 45 x 200 mm (W x H x D) |
Key Functions
- Fiber Extension: Supports extending I/O links beyond the 8 Series rack of the S8 C300 controller, suitable for remote applications.
- Redundant Design: Provides redundant I/O links for high reliability when connected to the S8 C300 controller via a pair of combined cable interfaces.
- Long-distance Transmission: Supports fiber optic extension up to 2 kilometers, suitable for industrial scenarios requiring long-distance connections.
Application Scenarios
- Process Control: Connecting remote measuring instruments and control equipment in industries such as petroleum, chemical, and power.
- Data Acquisition: Extending the distance between data acquisition equipment and the host computer to ensure stable data transmission.
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