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To ensure accuracy, please note that images may be representative. Refer to the product data sheet for detailed specifications.
| Manufacturer | Symcom / Littelfuse |
| Manufacturer Product Number | 601-CS-D-P1 |
| Description | Ground Fault Relay; 0.5-10 A; 200-480V; 0.5-800A; DIN Rail/Panel Mount |
| Datasheet | Download Datasheet |
The Littelfuse SymCom 601-CS-D-P1 is a programmable 3-phase ground fault and power monitor for 200-480 V AC systems. It warns and trips on ground-fault current of 0.5-10 A, read through an external zero-sequence CT (not included). It monitors ground fault (warning and trip), with phase currents, phase voltages, voltage and current unbalance, power factor and frequency.
Motor full-load amps: 0.5-175 A direct; 176-800 A with CTs. Trip delay: Two programmable timers: motor acceleration and ground fault. Networking: Modbus RTU with the RS485MS-2W module; DeviceNet with the CIO-601CS-DN-P1 module. Display: Built-in display: programming and real-time voltage, unbalance, current, ground-fault warning and trip. Accuracy: Voltage ±1%; current ±3% (<175 A direct); ground fault current ±3%. Repeatability: Voltage ±0.5% of nominal; current ±1% (<175 A direct).
Output: 1C SPDT (ground-fault trip or network-controlled output), 10 A at 240 V AC; pilot duty 480 VA at 240 V AC. Mounting: DIN Rail/Panel Mount. Dimensions: 77.47 x 97.79 x 128.27 mm (3.05 x 3.85 x 5.05 in), H x W x D. Short circuit rating: 100 kA rms symmetrical, 600 V AC max. Power: 10 W max. It operates from -20 to +70 °C. Approvals: UL 508, CE.
| Category | |
| Manufacturer | Symcom / Littelfuse |
| Monitoring Function | Ground fault (warning and trip), with phase currents, phase voltages, voltage and current unbalance, power factor and frequency |
| Ground Fault Current Range | 0.5-10 A |
| Required Accessories | External zero-sequence CT (not included) |
| Number of Phases | 3-Phase |
| Input Voltage | (200...480)V AC |
| Frequency | 50/60 Hz |
| Motor Full Load Current Range | 0.5-175 A direct; 176-800 A with CTs |
| Trip Delay | Two programmable timers: motor acceleration and ground fault |
| Communication Protocol | Modbus RTU with the RS485MS-2W module; DeviceNet with the CIO-601CS-DN-P1 module |
| Status Indicator | Built-in display: programming and real-time voltage, unbalance, current, ground-fault warning and trip |
| Contact Configuration | 1C SPDT (ground-fault trip or network-controlled output) |
| Output Rating | 10 A at 240 V AC |
| Pilot Duty | 480 VA at 240 V AC |
| Sensing Accuracy | Voltage ±1%; current ±3% (<175 A direct); ground fault current ±3% |
| Repeatability | Voltage ±0.5% of nominal; current ±1% (<175 A direct) |
| Mounting Type | DIN Rail/Panel Mount |
| Dimensions | 77.47 x 97.79 x 128.27 mm (3.05 x 3.85 x 5.05 in), H x W x D |
| Protection Category | IP 20 |
| Rated Power | 10 W max |
| Short Circuit Rating | 100 kA rms symmetrical, 600 V AC max |
| Operating Temperature (Storage) | -20...+70 °C (-40...+80 °C) |
| Mechanical Life | 1,000,000 operations (100,000 operations at rated load) |
| Approvals | UL 508, CE |