Tutto sui PLC: la CPU
A practical engineering guide to PLC CPU operation, from deterministic scan cycles and I/O image tables to memory, communications, diagnostics, redundancy, processor sizing, and reliable system...
The ABB HIEE205010R0003 (also designated as the UNS3020A-Z V1 Ground Fault Relay) is a specialized protection and insulation monitoring device engineered for industrial power distribution and excitation networks. This hardware unit incorporates an adjustable trip mechanism configurable via front-mounted dip switches to manage specific electrical protection parameters. It features comprehensive diagnostic signaling through up to four integrated LEDs that provide real-time indicators for active protection timing, trip logs, sensor connection faults, and circuit breaker status. Designed for continuous monitoring, the status memory circuit retains trip information for up to 48 hours of inactivity without requiring external auxiliary power, providing critical diagnostic availability during circuit breaker isolation sequences.
| Property | Characteristics |
|---|---|
| Manufacturer | ABB |
| Model | HIEE205010R0003 / HIEE205010R0001 |
| Series Designation | UNS3020A-Z V1 |
| Device Type | Ground Fault Relay |
| User Interface | Front Dip Switches / Diagnostic LEDs |
| Protection Memory Retention | 48 hours (without auxiliary supply) |
| Diagnostic Status Indicators | Timing, Tripped, Pre-alarm (L), Connection Failure |
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Returns & Warranty



The ABB HIEE205010R0003 (also designated as the UNS3020A-Z V1 Ground Fault Relay) is a specialized protection and insulation monitoring device engineered for industrial power distribution and excitation networks. This hardware unit incorporates an adjustable trip mechanism configurable via front-mounted dip switches to manage specific electrical protection parameters. It features comprehensive diagnostic signaling through up to four integrated LEDs that provide real-time indicators for active protection timing, trip logs, sensor connection faults, and circuit breaker status. Designed for continuous monitoring, the status memory circuit retains trip information for up to 48 hours of inactivity without requiring external auxiliary power, providing critical diagnostic availability during circuit breaker isolation sequences.
| Property | Characteristics |
|---|---|
| Manufacturer | ABB |
| Model | HIEE205010R0003 / HIEE205010R0001 |
| Series Designation | UNS3020A-Z V1 |
| Device Type | Ground Fault Relay |
| User Interface | Front Dip Switches / Diagnostic LEDs |
| Protection Memory Retention | 48 hours (without auxiliary supply) |
| Diagnostic Status Indicators | Timing, Tripped, Pre-alarm (L), Connection Failure |
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Color pattern |
Black
|
| Country of origin |
Switzerland
|