Product Overview
SAI's UL 891 Series 2 Combination Switchboard is a fully integrated low-voltage power distribution system designed for applications requiring higher capacity, advanced protection, and auxiliary equipment integration. Engineered for flexibility and reliability, the platform accommodates molded-case and insulated-case circuit breakers, transformers, STS systems, and other custom power distribution components within a single lineup.
Technical Specifications
- Voltage: Up to 600VAC
- Main Bus Rating
- Up to 6000A (NEMA 1)
- Up to 5000A (NEMA 3R)
- Short-Circuit Rating: Up to 200kAIC (up to 5000A)
- Feeder Breakers: Up to 4000A per section
- Breaker Types:
- UL 489 Molded Case Circuit Breakers
- UL 1066 / ANSI Insulated Case Circuit Breakers
- Agency Listing
- UL 891
- Access Options
- Front access or front-and-rear access
- Cable Entry
- Top or bottom
- Enclosure Options
- NEMA 1 and NEMA 3R
- Integrated Components: Transformers, STS, ATS, chokes, control systems, and custom power equipment
- Seismic Certification: IBC 2015 and CBC 2016 certified with component importance factor of 1.5
- Finish Options: Standard and custom colors available at no extra cost
- Build America Buy America (BABA) Compliant
Benefits
☑ UL Approved
☑ Integrated auxiliary equipment
☑ Fixed-mount Breakers from major manufacturers
High-Capacity Distribution Architecture
Supports main buses up to 6000A and fault-current ratings up to 200kAIC for demanding power systems.
Flexible Protection Platform
Accommodates fixed-mounted molded-case and insulated-case breakers from major manufacturers.
Integrated Power System Design
Allows incorporation of transformers, STS units, reactors, metering, and custom control assemblies within a single lineup.
Optimized Installation Configurations
Front-only or front-and-rear access options with top or bottom cable entry simplify project execution.
Seismic-Qualified Construction
Certified to IBC 2015 and CBC 2016 requirements for critical infrastructure applications.
Indoor & Outdoor Enclosure Options
Available in NEMA 1 and NEMA 3R configurations for a broad range of operating environments.