High Current Limiters
The G&W Electric HCL High Current Limiter is an up to 38kV backup current limiter for transformer tertiary winding protection and series backup of lower-rated interrupters, sold and supported in Texas and Oklahoma by Ryan Sales.
- Up to 38kV
- up to 200kV BIL
- through 50A continuous
- up to 120kA sym interrupting
Overview
High Current Limiters act as backup fuses in series with lower-rated interrupting devices: the downstream device handles overloads while the limiter clears major faults. With interrupt ratings to 120kA they fill the gap left by traditional current limiting fuses (typically limited to 50kA), eliminating costly reactors, and are commonly applied on transformer tertiary winding circuits.
Specifications
| Maximum voltage | Up to 38 kV |
|---|---|
| BIL | Up to 200 kV |
| Continuous current | Through 50 A |
| Symmetrical interrupting | Up to 120 kA |
Ratings from manufacturer data. Confirm your configuration with a rep.
Applications
- Transformer tertiary winding protection
- Series backup for lower-rated interrupters
- Reactor elimination
Spec sheets & documents
Frequently asked questions
Who sells the G&W Electric High Current Limiters in Texas?
Ryan Sales, a manufacturers' representative based in Magnolia, Texas, sells the G&W Electric High Current Limiters and has represented G&W Electric in Texas since 1984. Its regional reps support customers across Texas and Oklahoma. Call (281) 363-1106 or request a quote on this page.
How does the G&W Electric High Current Limiter (HCL) work with lower-rated interrupting devices?
The HCL is applied in series as a backup fuse: the lower-rated downstream device handles overloads, while the limiter clears major faults. With interrupting ratings up to 120 kA symmetrical, it covers fault levels beyond traditional current limiting fuses, which are typically limited to 50 kA.
What are the ratings and typical applications of the G&W Electric HCL?
The HCL is rated up to 38 kV, up to 200 kV BIL, through 50 A continuous and up to 120 kA symmetrical interrupting. It is commonly applied on transformer tertiary winding circuits and as series backup for lower-rated interrupters, where it can eliminate the need for costly reactors.
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