--- title: "Metal-Enclosed Load-Interrupter Switchgear | Entogo" description: "Metal-enclosed load-interrupter switchgear for 15 / 27 / 38 kV class medium-voltage systems, 60 Hz — fixed-mounted load-break switches with power-fuse…" url: https://entogo.ca/products/metal-enclosed-switchgear/ lang: en type: website image: https://entogo.ca/_astro/Entogo-Box-Type-Fixed-Metal-Enclosed-Switchgear.Cc7QCP4l.png alternates: en: https://entogo.ca/products/metal-enclosed-switchgear/ fr-CA: https://entogo.ca/fr/products/metal-enclosed-switchgear/ es: https://entogo.ca/es/products/metal-enclosed-switchgear/ ar: https://entogo.ca/ar/products/metal-enclosed-switchgear/ site: https://entogo.ca/ llms: https://entogo.ca/llms.txt --- Home › Products › Switchgear & Distribution › Metal-Enclosed Load-Interrupter Switchgear Switchgear & Distribution # Metal-Enclosed Load-Interrupter Switchgear 15 / 27 / 38 kV class · load-break + fuse ![Entogo metal-enclosed load-interrupter medium-voltage switchgear](https://entogo.ca/_astro/Entogo-Box-Type-Fixed-Metal-Enclosed-Switchgear.Cc7QCP4l_1y87ft.webp) 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. Entogo designs and builds the Metal-Enclosed Load-Interrupter Switchgear in its own factory with a vertically integrated supply chain: this product ships in 16–24 weeks (new UL or CSA certification can extend that, within a guaranteed 36-week worst case), and every Entogo product carries a minimum 36-month manufacturer warranty. 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. Custom-engineered · built to order [Get a quote](https://entogo.ca/contact/) Lead time 16–24 weeks Order now for estimated delivery Jan 2027 – Mar 2027. Certification / testing may extend this per the standard and scope. Quality & certifications - ![UL safety certification mark](https://entogo.ca/_astro/Entogo-UL-Underwriters-Laboratories-North-America-Safety-Certification.BoQ45DeX_248O3C.webp) - ![CSA certification mark](https://entogo.ca/_astro/Entogo-CSA-Canadian-Standards-Association-Safety-Certification.CY1FySDR_Z11vFCD.webp) - ![CE European Conformity marking](https://entogo.ca/_astro/Entogo-CE-European-Conformity-Marking.xJPMJKcl_1wU1NT.webp) - ![ISO 9001 quality management mark](https://entogo.ca/_astro/Entogo-ISO-9001-Quality-Management-System-Certification.DbscJvvM_47kvy.webp) - ![ISO 14001 environmental management mark](https://entogo.ca/_astro/Entogo-ISO-14001-Environmental-Management-System-Certification.DXOTPjd4_Z4rpDm.webp) - ![IEC CB Scheme mark](https://entogo.ca/_astro/Entogo-CB-Scheme-IEC-International-Electrical-Certification.CPXJ4xZK_aV0YT.webp) Built under audited ISO quality systems and to ANSI/IEEE & IEC standards. Product-level UL (cULus) / CSA certification available on request. [See all certifications](https://entogo.ca/certifications/) ## Specifications Metal-Enclosed Load-Interrupter Switchgear specifications | Specification | Value | | --- | --- | | Applicable standards | ANSI/IEEE C37.20.3 (assembly) · C37.20.4 / C37.22 (load-interrupter switch) | | Construction | Metal-enclosed, fixed-mounted load-break switch + power fuse | | Rated max voltage | 15 / 27 / 38 kV (to 48.3 kV) | | BIL | 95 / 125 / 150 kV by class | | Continuous current | 600 / 1200 A | | Interrupting | Power-fuse interrupting per rating | | Frequency | 60 Hz | | Bus | Single bus / sectionalized single bus | | Enclosure | NEMA Type 1 (indoor) / 3R (outdoor) | Glossary: [Metal-enclosed](https://entogo.ca/glossary/#metal-enclosed-switchgear) [60 Hz vs. 50 Hz](https://entogo.ca/glossary/#60-hz-vs-50-hz) ## Applications - Compact and secondary substations - Medium-voltage primary service entrance and isolation - Switchgear retrofit and replacement - Commercial, institutional and industrial MV distribution Payment & financing Flexible payment and project financing is available for qualified projects — milestone-based plans, reduced upfront terms and third-party financing. Entogo is the equipment supplier, not a lender; all options are subject to credit review and a signed agreement. [See payment options](https://entogo.ca/payment-options/) After-sales Backed by Entogo lifecycle service — technical support, spare parts and a minimum 36-month warranty (well beyond the industry norm; up to 10 years on major power equipment, confirmed per contract). Our team responds to every request within one business day. [After-sales support](https://entogo.ca/support/) [Track an order](https://entogo.ca/support/order-status/) 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. Distribution ## Related products [![Entogo metal-clad medium-voltage switchgear with drawout vacuum circuit breakers](https://entogo.ca/_astro/Entogo-Armored-Removable-AC-Metal-Enclosed-Switchgear.DuhYnxGM_1rPQtT.webp) Distribution ### Metal-Clad Switchgear (Drawout MV) 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. View](https://entogo.ca/products/metal-clad-switchgear/)[![Entogo dead-front low-voltage switchboard, UL 891 type](https://entogo.ca/_astro/Entogo-GGD-AC-Low-Voltage-Switchgear.zdOCIT9Q_6cFiL.webp) Distribution ### Low-Voltage Switchboard (UL 891) A dead-front low-voltage switchboard for ≤ 600 V, 60 Hz service-entrance and distribution — up to 6000 A and 200 kA, with group-mounted molded-case or insulated-case breakers, for commercial, institutional and industrial buildings. Designed to UL 891; UL (cULus) / CSA certifiable. View](https://entogo.ca/products/low-voltage-switchboard/)[![Entogo pad-mounted ring main unit load-break switchgear, dead-front](https://entogo.ca/_astro/Entogo-Gas-Fully-Insulated-Fully-Sealed-Ring-Main-Unit.BUgYaOBQ_1CzHVw.webp) Distribution ### Pad-Mounted Switchgear (Ring Main Unit) Pad-mounted load-break switchgear (ring main unit) for underground medium-voltage distribution — 15/25/38 kV class, 200/600 A, dead-front, with SF6 or SF6-free fault-interrupting ways for utility loops, campuses and data centers, 60 Hz. Designed to IEC 62271-200 and ANSI C57.12.28; UL/CSA certifiable. View](https://entogo.ca/products/pad-mounted-switchgear-rmu/) Request a quote ## Talk to engineering about the Metal-Enclosed Load-Interrupter Switchgear. 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