Custom switchgear, Engineered to your plant
LV and MV switchgear sized to your single-line, your fault current, and your operating modes. Listed assemblies, PE-stamped engineering, vendor-neutral architecture. Delivered in 20 to 50 weeks, not OEM backlogs.
- Engineering package
- PE-stamped
- Listed assemblies
- UL 1558
- Typical delivery
- 20–50 wks
- Open architecture
- Vendor-neutral
Catalog vs Custom
What changes when the gear is engineered for your plant.
Catalog switchgear
What you get when the gear is pulled from a configurator and shipped to fit the order, not the facility.
- Configured from preset cell sizes, breaker frames, and section widths
- Optimized for OEM manufacturing efficiency, not your facility
- Long lead times driven by global supply chain and OEM backlog
- Spare-part and service path tied to the OEM ecosystem
- Sequence of operations is generic, not coordinated to your plant
Custom-engineered switchgear
What you get when the gear is engineered to your single-line, fault current, and operating modes from the start.
- Sized to your single-line, fault current, and physical envelope
- Sequence of operations written for your operating modes
- Component selection (breakers, relays, controls) deliberate, not inherited
- Lead times typically 20 to 50 weeks, well inside OEM backlogs
- Documentation and protocols leave the facility fully serviceable by anyone
What "Custom" Actually Covers
Six engineering dimensions, all decided for your facility.
- Engineered around your single-line
Source counts, transformer configuration, tie schemes, redundancy class, and downstream load profile. The lineup is sized and configured to the system, not the other way around.
- Sized to your fault current
Withstand, close-and-latch, and protective coordination calculated to your available fault current and the upstream impedance, not a worst-case envelope that wastes copper.
- Sequence of operations built to spec
Transfer schemes, paralleling logic, load shed priority, interlocks, and HMI workflow written for your facility, then simulated before commissioning.
- Component selection by the engineer
Breaker frame, relay platform, metering accuracy class, communications protocols, and HMI hardware chosen deliberately, with a documented rationale you can review.
- Physical envelope respected
Electrical room dimensions, door swings, rigging path, working clearances per NEC 110.26, and seismic anchoring built into the design from the start.
- Documentation as a deliverable
PE-stamped single-line, schematics, layout, protection settings, sequence of operations, factory test report, and as-builts. Not a binder of vendor manuals.
Configuration Envelope
The options space, at a glance.
Configurations beyond this envelope are routine. Tell us the application.
- Voltage class
- 208V240V480V600V2.4kV4.16kV13.8kV15kV class
- Standards
- UL 1558 (LV)UL 1066 (LV breakers)IEEE C37.20.1 (LV)IEEE C37.20.2 (MV metal-clad)IEEE C37.20.7 (arc resistant)IEEE C37.59 (retrofit)
- Bus and breaker ratings
- Up to 5000A main busUp to 6000A on requestDrawout LV power circuit breakersVacuum interrupter MV breakers
- Protection and controls
- Microprocessor relaysZone-selective interlockingFast bus protectionOptical arc flash detectionPLC parallelingCustom operator HMI
- Communications
- Modbus TCPDNP3IEC 61850BACnetOPC UAHardwired I/OGenerator OEM protocols
- Configurations
- Single busMain-tie-mainMain-tie-tie-mainDouble-endedParalleling switchgearArc resistant 1/2/2B/2COutdoor walk-in enclosures
When Custom Is the Right Call
Six common scenarios where catalog gear is the wrong fit.
- Replacement switchgear for projects that cannot wait
OEM lead times are quoting 52 to 100 weeks. We engineer and build custom replacement gear in 20 to 50 weeks for facilities that need a real result this year.
- Greenfield service entrance
New construction where the switchgear has to fit a specific electrical room, integrate with a planned generator plant, and align with downstream distribution from day one.
- Generator paralleling plants
Multi-engine paralleling switchgear engineered to the specific generators (any OEM), with custom sequence of operations for the facility's standby, prime, peak shaving, or base-load mode.
- Process expansions
New switchgear sized to support a process expansion, coordinated with the existing distribution, and engineered to integrate without disrupting the operating plant.
- Specialized environments
Outdoor walk-in enclosures, hazardous-area-adjacent installations, seismic zones, and high-humidity coastal Florida conditions. Engineered for the environment, not retrofitted into it.
- Arc resistant where the spec calls for it
Type 2B and Type 2C arc resistant configurations, integrated with the rest of the custom design from the start instead of layered on at the end.
What You Get
Four deliverables, every project.
- PE-stamped engineering package
Single-line, schematics, layout, sequence of operations, protection settings, communications architecture, witness test plan, and seismic anchoring details.
- Factory build and test
Listed assembly built in the shop, production test per the standard, optional witnessed acceptance test on request including paralleling simulation.
- Site delivery and install supervision
Coordinated rigging, install supervision, and commissioning by the same engineering team that designed the gear. Not a handoff to a separate field crew.
- Commissioning, training, documentation
Full functional testing, operator training, NFPA 70E labels installed at energization, runbook handoff, and the complete as-built package.
How It Works
From scope conversation to energization.
- 01
Scope conversation
Single-line review, load review, operating modes, physical constraints, and timeline. Half-hour call with a power systems engineer.
- 02
Engineering and quote
Preliminary engineering, configuration, and an indicative budget and schedule before any commitment.
- 03
Detailed engineering and build
PE-stamped package, factory build, production test, optional witnessed acceptance test.
- 04
Site install, commission, hand off
Coordinated delivery, install supervision, commissioning, training, and the as-built documentation handoff at energization.
In the Shop
Custom switchgear during factory build.
Custom switchgear lineup mid-build on the shop floor: copper bus runs visible, breaker cells partially populated, control wiring in progress, engineering drawings on the bench
1920 × 1080 (16:9)
Who It Is For
Built for facilities that have specific requirements.
Healthcare
Hospital service entrance and essential electrical systems engineered to NFPA 110 and the specific facility layout.
Data Centers
Tier III and IV designs with concurrent maintainability built into the custom configuration from the start.
Utilities & Generation
Substations, generation plants, and prime-power facilities with multi-engine paralleling sized to the plant.
Water & Wastewater
Treatment plants and pump stations with continuous-process requirements and EPA compliance.
Related
Deeper reading and adjacent work.
- 01
Low voltage switchgear
UL 1558 LV platform: voltages, breakers, paralleling, and arc resistance.
- 02
Paralleling switchgear
Multi-generator paralleling, sync, load share, and transfer logic.
- 03
Arc resistant switchgear
IEEE C37.20.7 Type 2B lineups, LV and MV.
- 04
Switchgear lead times in 2026
Why OEM backlogs have stretched and what your real options are.
Common Questions
Answers from our engineering team.
Talk to a Power Systems Engineer
Tell us the application: single-line, voltage class, ratings, operating modes, and timeline. We will get back within 24 hours.
- Reviewed by a power systems engineer, not a salesperson
- Indicative budget and schedule before any engineering commitment
- 20 to 50 week delivery on most configurations, well inside OEM backlogs
- Vendor-neutral, fully documented, ControlCom Connect ready
Tell us about your custom switchgear project
Application, voltage class, ratings, operating modes, and timeline.