Low-Voltage Switchgear for Critical Facilities
Low-voltage switchgear is the type-tested electrical assembly that distributes and protects power at the main and feeder level in critical facilities, typically up to about 6000A and 600V. Platforms such as Eaton Magnum and Schneider Blokset with Masterpact breakers provide drawout breakers, integrated metering, and arc-reduction features. Comp-Utility specs, installs, and services low-voltage switchgear across Central Texas.
What We Provide
Our Capabilities
Switchgear Specification
We specify low-voltage switchgear, breakers, and metering for your one-line and distribution requirements.
Learn moreInstallation and Commissioning
We install and commission switchgear and perform acceptance testing before it carries load.
Learn moreMaintenance and Testing
We maintain and test switchgear to NFPA 70B, including thermography and breaker testing.
Learn moreMain Distribution
Type-Tested Switchgear with Drawout Breakers
Low-voltage switchgear is the backbone of a facility's electrical distribution, housing main and feeder breakers, metering, and protection in a type-tested assembly. Drawout power circuit breakers allow a breaker to be serviced or replaced without de-energizing the whole lineup.
Comp-Utility specifies, installs, commissions, and maintains LV switchgear from leading manufacturers as part of a complete power system.
Key Specifications
| Attribute | Low-Voltage Switchgear |
|---|---|
| Function | Main and feeder distribution and protection |
| Current rating | Up to ~6000A |
| Voltage | Up to 600V (to 635V on some platforms) |
| Breakers | Drawout LV power circuit breakers (e.g., Masterpact MTZ) |
| Representative products | Eaton Magnum DS/SB, Schneider Blokset |
| Features | Integrated metering, arc-reduction, communications |
| Typical applications | Data center main switchgear, industrial plants |
Specifications reflect representative LV switchgear platforms from our manufacturer partners; exact ratings and configurations vary. Contact us to confirm the current configuration for your project.
The Comp-Utility Difference
Why Comp-Utility?
Long-Standing Distribution Partner
As a long-standing distribution partner of Eaton, Schneider Electric, and Vertiv, we specify best-in-class systems and back them with factory-grade service.
Engineer-Owned and Operated
Comp-Utility is owned and operated by engineers, with licensed Texas Professional Engineers (P.E.) on staff. That rigor anchors every design, specification, and installation.
Turnkey, Single-Contract Partner
We sell, design, install, and maintain complete infrastructure end to end. One accountable team and one contract for power, cooling, distribution, and cabling.
24/7 Emergency Response and Preventative Maintenance
Our technicians provide preventative maintenance programs and 24/7 emergency response, with rapid on-site dispatch across Central Texas when facilities need us most.
Licensed, Certified & Recognized
We hold ourselves to the standards of the institutions we serve, from professional licensure and jobsite safety to the industry organizations that set the bar for mission-critical work.
Licensed Professional Engineers
State of Texas (TBPE)
OSHA 30 Certified
Field Technicians
AFCOM Member
Data center industry association
7x24 Exchange Member
Mission-critical infrastructure
Frequently Asked Questions
What is low-voltage switchgear?
Low-voltage switchgear is a type-tested electrical assembly that distributes and protects power at the main and feeder level, generally up to about 6000A and 600V. It houses power circuit breakers, metering, and protective relaying in a metal enclosure. In data centers, it is the main distribution point between the utility or generator and downstream equipment.
What is the difference between switchgear and a switchboard?
Switchgear typically uses drawout power circuit breakers and is built to more rigorous type-tested standards with higher short-circuit ratings and serviceability, while a switchboard generally uses fixed or plug-in breakers and is used for less critical distribution. Switchgear is favored for main distribution in critical facilities. Comp-Utility specifies the right assembly for your application.
What are drawout breakers and why do they matter?
Drawout (withdrawable) power circuit breakers can be racked out of the switchgear for inspection, testing, maintenance, or replacement without de-energizing the entire lineup. This greatly improves maintainability and uptime in critical facilities, supporting concurrent maintenance. It is a key reason switchgear is preferred over fixed-breaker boards for main distribution.
What breakers are used in low-voltage switchgear?
LV switchgear uses power circuit breakers such as the Schneider Masterpact MTZ and Eaton Magnum, with intelligent trip units that provide protection, metering, and communications. Molded-case breakers may be used in feeders. Comp-Utility specifies the breakers and trip settings and coordinates protection so faults are isolated correctly.
What is arc-reduction and why is it important?
Arc-reduction features and arc-resistant designs reduce the energy and hazard of an arc flash event, protecting personnel and equipment. Combined with an arc flash study and proper PPE, these features improve electrical safety. Comp-Utility specifies arc-reduction options and performs arc flash studies under NFPA 70E as part of a safe design.
How is switchgear maintained?
Switchgear maintenance includes inspection, infrared thermography, insulation resistance testing, connection torque checks, breaker testing, and protective relay testing, aligned with NFPA 70B. Drawout breakers allow much of this work without a full shutdown. Comp-Utility maintains and tests switchgear and documents the results for reliability and compliance.
Can you provide acceptance testing for new switchgear?
Yes. We perform NETA-style acceptance testing on newly installed switchgear to verify correct installation and readiness before energizing, catching shipping damage, wiring errors, and out-of-spec components. Acceptance testing is part of our installation and commissioning process. Comp-Utility documents the results as a baseline for future maintenance.
Who installs and services low-voltage switchgear in Central Texas?
Comp-Utility specs, installs, commissions, tests, and maintains low-voltage switchgear across Central Texas, including acceptance and maintenance testing and 24/7 emergency response. Engineer-owned since 1992 with licensed Texas P.E.s. Call (512) 346-0999 or email sales@comp-utility.com.