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R-Series
UL 891 Switchboard - Rear Access

The R-Series is rear-access, UL 891-listed switchboard up to 4000A with 65kAIC (100kAIC optional). It supports molded or insulated-case breakers and offers flexible structures like metering, feeder breakers, and transfer switches in NEMA 1 or 3R enclosures.

When reliability, uptime, and maintainability are nonnegotiable, you need more than an off-the-shelf solution. Lake Shore Electric’s R-Series switchboards are purpose-built to provide superior rear access, robust safety, and code-compliant power distribution even in your most demanding environments. As a trusted electric rear access distributor with over a century of engineering expertise, our solutions are made for performance today and adaptability tomorrow.

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  • R-Series UL 891 Switchboard - Rear Access
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Our Documentation

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Brochures
datasheet-icon
Data Sheets
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manuals-icon
Manuals
COMING SOON!
Icon of an open book with a gear on the center bottom
Specification
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What Is an Electric Rear Access Switchboard?

A rear access switchboard maximizes serviceability and simplifies wiring in facilities with dedicated electrical rooms or where rear access delivers considerable installation advantages. These switchboards enable cable terminations, maintenance, and metering from the back of the unit.

The Lake Shore Electric R-Series is rear-access, UL 891-listed switchboard up to 4000A with 65kAIC (100kAIC optional). It supports molded or insulated-case breakers and offers flexible structures like metering, feeder breakers, and transfer switches in NEMA 1 or 3R enclosures.

Key Benefits of the R-Series

Operators and engineers seeking lasting value in every project trust Lake Shore Electric's rear-access switchboards. With us, customers can benefit from:

  • Accelerated project timelines: Prefabricated in a controlled environment, each Lake Shore Electric R-Series unit arrives tested and ready to install, shrinking schedules compared to traditional site-built switchgear and helping projects avoid costly delays and labor shortages.
  • Superior serviceability and uptime: Technicians benefit from direct rear access for cable terminations, modifications, or upgrades, making it easier to maintain critical circuits without disrupting neighboring systems or requiring extensive shutdowns.
  • Turnkey custom engineering: No two facilities are the same. We design our rear access switchgear boards from the ground up to fit your precise load demands, room constraints, and integration requirements, ensuring optimal compatibility with existing infrastructure.

Common Applications for Rear Access Switchboard Boards

Lake Shore Electric is proud to serve data centers, industrial facilities, utilities, campuses, and commercial properties. Our solutions are ideal in settings where performance, uptime, and safety are mission-critical. As an experienced electric rear access switchboard distributor and partner, we excel at managing challenging footprints, specialized voltage needs, and demanding compliance requirements for new construction and upgrades.

Fully Customizable Rear Access Switchboards

Each rear access switchboard we build reflects a century of engineering expertise. We can tailor the R-Series for unique spatial constraints, voltage ratings, and breaker types. We also offer custom enclosure finishes and advanced environmental protection. Need stainless steel for a corrosive site or smart monitoring for a modern energy hub? Our design team handles it all in-house for consistency, reliability, and code compliance.

Upgrade Your Power Infrastructure

Outdated construction and generic hardware can stall initiatives. Turn to Lake Shore Electric for R-Series switchboard solutions engineered for modern demands. Our experts are ready to consult on the right approach, so your power system arrives on time and according to spec. Connect with us for more information.

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