The Most Trusted Name in Power Factor Correction and Harmonic Filtering


Share this product page:   

NEPSI's Metal-Enclosed Harmonic Filter Banks can be equipped with main-incoming fuses for short circuit protection and isolation of the filter bank in the event of an internal fault. When provided with an incoming air disconnect switch or drawout circuit breaker, the fuses are located in an isolated compartment to allow for safe access and replacement of fuses.

Fuses are clip mounted to ease installation, replacement, and testing. Blown fuse indicators (striker pin) are visible through the enclosure window, when windows are provided. The SIBA Fuse striker pin activates for fuse operation (from faults) and fuse over-temperature due to fuse damage or overload.

The fuses can be supplied with an optional micro switch that allows for supervision of the fuse by means of a flexible non-conductive Bowden cable. During fuse operation, the fuse striker pin transmits mechanical force through the Bowden cable to the micro switch. The micro switch may be wired to communicate the fuse operation to the control and protection system or remotely to initiate shutdown and/or service.

Consequently the fuse will provide true full-range protection when supplied with the micro switch, Bowden cable, and integrated with the bank’s protection and control system.

For the reasons stated above, NEPSI recommends SIBA current limiting fuses. These fuses are the world’s most advance, reliable, and in-stock fuses for capacitor bank and harmonic filter bank protection. There is no alternative that matches their performance.

Note: Main incoming fuses are not intended for overload protection of the harmonic filter bank. Up to four (4) fuses can be paralleled to obtain higher current ratings.

Click on the cutsheets below for further details.







2.4kV - 7.2kV 6.3A - 355A 50kA - 63kA SIBA
7.2kV - 17.5kV 6.3A - 200A 63kA SIBA
17.5kV - 24kV 6.3A - 200A 63kA SIBA
24kV - 38kV 6.3A - 63A 40kA SIBA

Follow us on social media for up-to-date news, videos, and other information: