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To ensure accuracy, please note that images may be representative. Refer to the product data sheet for detailed specifications.
| Manufacturer | Startco / Littelfuse |
| Manufacturer Product Number | NGRUS321 |
| Description | Neutral Grounding Resistor; 5 A; Continuous |
| Datasheet | Download Datasheet |
The Littelfuse Startco NGRUS321 is a neutral grounding resistor system for 600 V line-to-line, 347 V line-to-neutral systems, limiting ground-fault current to 5 A (continuous rating).
A neutral grounding resistor holds the current of a line-to-ground fault to a safe, known value, so a resistance-grounded system can keep running on the first fault while the monitor finds it.
Supplied as: Neutral Grounding Resistor System (NGR, current transformer and sensing resistor in a NEMA 3R enclosure). Resistance: 69.4 Ω (+/- 10 % resistance). Monitor: SE-330. Current transformer: ELCT5-31. Sensing resistor: ER-600VC.
Enclosure: NEMA 3R, galvanized steel, NEMA 3R; Weather Protected Sensing Resistor. Finish: powder coated. Insulation level: 11 KV BIL. Temperature rise: 385 °C (725 °F). Seismic bracing: included. Size: Drawing (in): front view 31 (body 28); right side view 15 1/2 (body 12 7/8); height 12; bottom (4) 7/16 dia. holes on 26 1/2 x 10 1/2; (5) 1/2 conduit K.O..
Approvals: cULus or CSA at customer request.
| Category | |
| Manufacturer | Startco / Littelfuse |
| Model | NGRUS |