Service Entrance Switchgear
400-800 Amp SES
Need 400–800 amp SES fast for a service upgrade, expansion, or replacement? We keep high-demand switchgear lineups in stock and ready to ship from our 50,000 sq. ft. Ontario, California warehouse, so you can stay on schedule, reduce downtime, and avoid long lead times.
Service Entrance Switchgear
400-800 Amp SES in stock now
400–800 amp service entrance switchgear (SES) is designed to safely receive utility power, provide main overcurrent protection, and distribute power downstream while meeting strict code and inspection requirements.
In-stock now
400–800 amp SES tailored to your projects requirements
Get 400–800 amp SES configured for your project and quoted fast. Our lineups use Siemens components, meet UL 891 requirements, and include a one-year warranty for added protection. We help verify specs, confirm availability, and support smoother approvals from submittals through installation.
One-Year Warranty on all equipment
UL 891 Certified Switchgear
Meets All EUSERC & Utility Standards
Certified Siemens OEM
In-stock now
400–800 amp SES tailored to your projects requirements
Get 400–800 amp SES configured for your project and quoted fast. Our lineups use Siemens components, meet UL 891 requirements, and include a one-year warranty for added protection. We help verify specs, confirm availability, and support smoother approvals from submittals through installation.
Fast lead times
In-stock inventory that helps you avoid delays
Every week, projects get pushed back because switchgear is unavailable, misconfigured, or slowed down during procurement. Our team supports time-sensitive schedules with a streamlined quote process, clear communication, and practical guidance that keeps your project moving forward.
Reliable main service protection
400–800 amp service entrance switchgear (SES) provides a secure point of disconnect and overcurrent protection, helping safeguard downstream equipment and personnel from fault conditions.
Designed for code compliance and inspections
Properly engineered (service entrance switchgear (SES) is built to meet UL, NEC, and utility requirements, helping projects pass inspection and maintain long-term operational safety.
Ideal for secondary distribution and targeted loads
Switchgear in the 400 to 800 amp range is commonly used for downstream distribution, UPS outputs, mechanical systems, and localized power requirements. These ratings provide dependable capacity without oversizing the electrical system.
Specifications
Configurations we offer
With reliable performance and precision engineering, we ensure your electrical systems are supported with the exact power capacity you need. We offer complete switchgear solutions — 400A, 600A, 800A, 1200A, 1600A, 2000A, 2500A, 3000A, and 4000A.
Voltages (1 Phase & 3 Phase)
- 480Y/277 V
- 120/208Y V
- 120/240 V
- 600 V
- 800 V
- 1000 V
-
415/240 V
3-Phase, 4-Wire
Amperages
- 600A
- 800A
- 1200A
- 1600A
- 2000A
- 2500A
- 3000A
- 4000A
Reliable power solutions for data centers & crypto mining
- 415/240 V 3-Phase, 4-Wire
- High amperages up to 4000A
- Free delivery in 3-5 business days
Precision-built
Get the right 400–800 amp SES for your project
When purchasing 400–800 amp SES, you’re choosing more than an amp rating. The right lineup impacts electrical safety, utility coordination, inspection approval, and long-term reliability for your facility.
We help contractors, facility teams, and project managers source properly configured switchgear for:
- Main service entrances and facility upgrades
- Primary/secondary distribution
- Industrial expansions and infrastructure projects
Manufactured in United States
Manufactured in the United States and powered by years of experience
Our products are proudly designed and engineered in the United States. Because we don’t rely on overseas manufacturing, international tariffs don’t affect our pricing. This allows us to offer consistent, competitive prices while delivering top-quality, American-made solutions.
FAQs
Frequently Asked Questions
These FAQs cover key design, specification, and procurement considerations for the 400-800 amp SES we have in stock now.
These amp ratings are commonly used for secondary distribution, UPS outputs, mechanical systems, tenant build-outs, and smaller data center or commercial power applications.
Yes, 400–800 amp switchgear is often used in data centers for downstream distribution, PDUs, UPS-backed loads, and support systems requiring fast deployment.
Common low-voltage options include 208V, 240V, 480V, and 600V, depending on inventory availability and system requirements.
In-stock equipment typically follows standard configurations, but options such as breaker types, enclosure styles, and mounting arrangements may still be available.
Delivery timelines depend on location and logistics, but in-stock switchgear is typically delivered within 3-5 business days.
Providing voltage, amp rating, breaker requirements, available fault current, and installation timeline helps confirm the best in-stock solution.
Yes, in-stock switchgear is commonly used for both temporary power setups and permanent installations, depending on project needs.
Contact Us
Request a quote for 400-800 amp SES
If you’re under schedule pressure or need fast bid pricing, we can help. Request a quote and we’ll confirm availability, configuration, and shipping timelines. We support contractors, facilities, and procurement teams, and can help verify specs when needed.
Fastest lead times
Fastest lead times guaranteed with local manufacturing
Emergency and overnight shipping
We deliver California-manufactured switchgear with the quickest turnaround times in the industry. By keeping production local, we eliminate delays and ensure faster delivery statewide. Our streamlined process guarantees UL 891 certified low voltage switchgear arrives on schedule, ready for installation.
