Switchgear & Distribution

Metal-Enclosed Load-Interrupter Switchgear

15 / 27 / 38 kV class · load-break + fuse

Entogo metal-enclosed load-interrupter medium-voltage switchgear

Overview

Metal-enclosed load-interrupter switchgear for 15 / 27 / 38 kV class medium-voltage systems, 60 Hz — fixed-mounted load-break switches with power-fuse protection in a compact steel enclosure, for compact substations, primary service entrance and MV isolation. Designed to ANSI/IEEE C37.20.3; UL / CSA certifiable.

This metal-enclosed load-interrupter switchgear receives and distributes power on 15 / 27 / 38 kV class medium-voltage systems at 60 Hz, using fixed-mounted load-break switches with power-fuse protection in a compact steel enclosure. It is the economical alternative to metal-clad gear where drawout breakers are not required — for compact substations, primary service entrance, MV isolation and switchgear retrofits.

Single-bus and sectionalized single-bus configurations are available, in NEMA 1 indoor or 3R outdoor enclosures, with continuous ratings of 600 or 1200 A. Designed and built to ANSI/IEEE C37.20.3 (assembly) and C37.20.4 / C37.22 (load-interrupter switch), with UL / CSA certification available on request.

Key features

  • Metal-enclosed construction with fixed-mounted load-break switches and power-fuse protection — a compact, economical alternative to metal-clad gear.
  • Designed and built to ANSI/IEEE C37.20.3, switch to C37.20.4 / C37.22, 60 Hz — UL / CSA certification available on request.
  • 15 / 27 / 38 kV class (to 48.3 kV), 600 / 1200 A, single or sectionalized bus.
  • Suited to primary service entrance, MV isolation and switchgear retrofits.
  • NEMA 1 indoor or 3R outdoor enclosure for medium-voltage receiving and distribution.

FAQ

Common questions

When is metal-enclosed switchgear the right choice?
Metal-enclosed load-interrupter switchgear (ANSI/IEEE C37.20.3) uses fixed-mounted load-break switches and power fuses rather than drawout breakers, so it is a compact, lower-cost choice for primary service entrance, isolation and feeder protection where full metal-clad gear is not required.
What voltage classes and ratings are available?
15 / 27 / 38 kV class (to 48.3 kV), 95 / 125 / 150 kV BIL, 600 / 1200 A, 60 Hz, single or sectionalized bus. Designed to ANSI/IEEE C37.20.3; UL / CSA certification available on request.

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