Switchgear & Distribution

Metal-Clad Switchgear (Drawout MV)

5 / 15 / 27 / 38 kV class · up to 4000 A

Overview

Metal-clad medium-voltage switchgear with drawout vacuum circuit breakers for 5/15/27/38 kV class systems, 60 Hz — compartmentalized, insulated-bus construction up to 4000 A and 50 kA, with optional arc-resistant rating. Designed to ANSI/IEEE C37.20.2; UL/CSA certifiable.

This metal-clad medium-voltage switchgear is built for breaker-protected primary distribution: drawout vacuum circuit breakers, insulated and isolated bus, and grounded steel barriers between each compartment for operator safety. It serves 5 / 15 / 27 / 38 kV class systems at 60 Hz, with main bus ratings to 4000 A and interrupting ratings up to 50 kA (63 kA available).

Configuration is specified per project — voltage class and BIL, continuous and interrupting current, breaker and relay scheme, optional arc-resistant Type 2B accessibility, and NEMA 1 indoor or 3R outdoor enclosure. Designed and built to ANSI/IEEE C37.20.2 with breakers to C37.04 / C37.06 / C37.09, it is SCADA-ready for utility substations, data-center electrical rooms and industrial primary feeders. UL / CSA certification is available on request.

Key features

  • Metal-clad construction — drawout breakers, insulated/isolated bus and grounded steel barriers between compartments for operator safety.
  • Designed and built to ANSI/IEEE C37.20.2, with breakers to C37.04 / C37.06 / C37.09, 60 Hz — UL / CSA certification available on request.
  • 5 / 15 / 27 / 38 kV class, up to 4000 A continuous and 50 kA (63 kA available) interrupting.
  • Optional arc-resistant accessibility Type 2B per IEEE C37.20.7.
  • NEMA 1 indoor or 3R outdoor enclosure; SCADA-ready protection and metering.

FAQ

Common questions

What is the difference between metal-clad and metal-enclosed switchgear?
Metal-clad switchgear (ANSI/IEEE C37.20.2) uses drawout circuit breakers, insulated bus and grounded steel barriers between every major compartment — a higher tier than metal-enclosed (C37.20.3) load-interrupter gear. Choose metal-clad for breaker-protected primary distribution.
What voltage classes and ratings are available?
4.76 / 8.25 / 15 / 27 / 38 kV (60 / 95 / 125 / 150 kV BIL), 1200 – 4000 A main bus, up to 50 kA (63 kA available) interrupting, 60 Hz — with an optional arc-resistant Type 2B rating.
Is it UL listed or CSA certified?
Units are designed and built to ANSI/IEEE C37.20.2 and the C37.04 / .06 / .09 breaker standards. UL / CSA certification is available on request, with certified assemblies shipping within a guaranteed 36-week worst case.

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