NGR Series - Canada

Neutral Grounding Resistor Canada
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High-resistance grounding prevents many of the problems that are associated with ungrounded and solidly grounded electrical distribution and utilization systems. High-resistance grounding can limit point-of-fault damage, eliminate transient overvoltages, reduce the arc-flash hazards, limit voltage exposure to personnel, and provide adequate tripping levels for selective current-based ground-fault detection and coordination. The Littelfuse Neutral Grounding Resistor System is a neutral grounding resistor (NGR), current transformer, and sensing resistor installed in a NEMA 3R enclosure used to high-resistance ground transformers and generators. The NGR system is designed for use with Littelfuse Neutral Grounding Resistor Monitors for complete system grounding and grounding protection. The NGR series – Canada systems are specifically designed for use in Canadian applications.



High-resistance grounding is applied on transformers and generators where safety and continuity of service are important. A faulted feeder may remain in operation until it is safe to repair the fault, where allowed by the local electrical code.

Access specifications, certifications, check availability and order parts below

Catalog #ApprovalsCT-Secondary Rating (A)Input
Voltage (V)
Mounting MethodWeight (lbs/g)Compare
NGR1036cULus0.05480Floor Mount23 kg (50-57 lbs)
NGR1038cULus0.05600Floor Mount23 kg (50-57 lbs)
NGR1041cULus0.05480Floor Mount23 kg (50-57 lbs)
NGR1045cULus0.05600Floor Mount23 kg (50-57 lbs)
NGR1050cULus0.05480Floor Mount23 kg (50-57 lbs)
NGR1051cULus0.05480Floor Mount23 kg (50-57 lbs)
NGR1052cULus0.05600Floor Mount23 kg (50-57 lbs)
NGR1053cULus0.05600Floor Mount23 kg (50-57 lbs)
NGR1066cULus0.054160Floor Mount(400-550lbs)
NGR1067cULus0.054160Floor Mount(400-550lbs)
NGR1068cULus0.054160Floor Mount(400-550lbs)
NGR1069cULus0.054160Floor Mount(400-550lbs)
NGR1070cULus0.054160Floor Mount(400-550lbs)
NGR1071cULus0.054160Floor Mount(400-550lbs)
NGR1072cULus0.054160Floor Mount(400-550lbs)
NGR1073cULus0.054160Floor Mount(400-550lbs)
NGR1074cULus0.054160Floor Mount(400-550lbs)
NGR1075cULus0.054160Floor Mount(400-550lbs)
NGR1076cULus0.054160Floor Mount(400-550lbs)
NGR1077cULus0.054160Floor Mount(400-550lbs)
NGR1078cULus14160Floor Mount(400-550lbs)
NGR1079cULus14160Floor Mount(400-550lbs)
NGR1080cULus14160Floor Mount(400-550lbs)
NGR1081cULus14160Floor Mount(400-550lbs)
NGRUS314CSA or UL0.05480Floor Mount23 kg (50-57 lbs)
NGRUS315CSA or UL0.05480Floor Mount23 kg (50-57 lbs)
NGRUS316CSA or UL0.05480Floor Mount23 kg (50-57 lbs)
NGRUS317CSA or UL0.05480Floor Mount23 kg (50-57 lbs)
NGRUS318CSA or UL0.05600Floor Mount23 kg (50-57 lbs)
NGRUS319CSA or UL0.05600Floor Mount23 kg (50-57 lbs)
NGRUS320CSA or UL0.05600Floor Mount23 kg (50-57 lbs)
NGRUS321CSA or UL0.05600Floor Mount23 kg (50-57 lbs)
NGRUS322CSA or UL0.054160Floor Mount(400-550lbs)
NGRUS323CSA or UL0.054160Floor Mount(400-550lbs)
NGRUS324CSA or UL0.054160Floor Mount(400-550lbs)
NGRUS325CSA or UL0.054160Floor Mount(400-550lbs)
NGRUS326CSA or UL0.054160Floor Mount(400-550lbs)
NGRUS327CSA or UL0.054160Floor Mount(400-550lbs)
NGRUS328CSA or UL0.054160Floor Mount(400-550lbs)
NGRUS329CSA or UL0.054160Floor Mount(400-550lbs)
NGRUS330CSA or UL0.054160Floor Mount(400-550lbs)
NGRUS331CSA or UL0.054160Floor Mount(400-550lbs)
NGRUS332CSA or UL0.054160Floor Mount(400-550lbs)
NGRUS333CSA or UL0.054160Floor Mount(400-550lbs)
NGRUS334CSA or UL14160Floor Mount(400-550lbs)
NGRUS335CSA or UL14160Floor Mount(400-550lbs)
NGRUS336CSA or UL14160Floor Mount(400-550lbs)
NGRUS337CSA or UL14160Floor Mount(400-550lbs)

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