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ABB SPAU341C1-AA Overcurrent & Earth Fault Protection Relay (Medium-Voltage)
Original price was: $3,980.00.$2,280.00Current price is: $2,280.00.
The ABB SPAU341C1-AA is a dedicated overcurrent and earth fault protection relay, engineered for medium-voltage power distribution networks with precise fault detection, configurable tripping logic, and multi-protocol communication for grid reliability.
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Description
| Parameter | Details |
|---|---|
| Model | SPAU341C1-AA |
| Manufacturer | ABB |
| Product Type | Overcurrent & Earth Fault Protection Relay (Medium-Voltage) |
| Core Protection Functions | Overcurrent protection (50/51), earth fault protection (50N/51N), short-circuit protection, thermal overload simulation |
| Measurement Inputs | 3-phase AC current (up to 5 A CT secondary); residual current (for earth fault, via CT or core balance transformer) |
| Operating Voltage | Auxiliary voltage: 110/220 V AC/DC (±15% tolerance); rated frequency: 50/60 Hz |
| Tripping Outputs | 4 x SPDT relay outputs (5 A/250 V AC, 5 A/30 V DC); 1 x alarm relay output |
| Communication Interfaces | RS-485 (Modbus RTU); optional Ethernet (Modbus TCP) |
| Display | 2-line LCD with backlight (shows measured values, fault codes, status) |
| Setting Range | Current setting (Iₙ): 0.1–10 x CT ratio; time multiplier: 0.1–1.0; pickup current: 0.2–10 Iₙ |
| Accuracy | Current measurement: ±1% of full scale; time setting: ±5% of set value |
| Operating Temperature Range | -25°C to +70°C |
| Storage Temperature Range | -40°C to +85°C |
| Relative Humidity | 5% – 95% RH (non-condensing, up to 40°C) |
| Protection Rating | IP40 (front panel); IP20 (when mounted in control cabinet) |
| Dimensions (W x H x D) | 96 mm × 96 mm × 140 mm (standard 4U panel mount) |
| Weight | 0.5 kg |
| Mounting Type | Panel-mounted (96×96 mm cutout, DIN 43700 compliant) |
| Certifications | IEC 60255 (relay standards), IEC 61850 (optional for substation automation), CE, UL 508 |
| Key Features | Configurable via front keypad or ABB Relion® software; fault event logging (up to 50 events with time stamp); self-diagnostics (hardware/software monitoring); password protection for settings |
| System Compatibility | Medium-voltage switchgear (3.3–36 kV), power distribution lines, transformers, motors |
| Applications | Industrial power distribution networks, commercial building electrical systems, renewable energy (solar/wind) grid connections, utility medium-voltage feeder protection |
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