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Fully Customizable | 400–12,000A | UL & CSA Listed | Indoor & Outdoor Applications

UL891 Low Voltage Switchboard

UL891 Low Voltage Switchboard

Overview

FATENG UL 891 Low Voltage Switchboards are designed to deliver maximum flexibility, reliability, and safety in power distribution for commercial, industrial, and infrastructure applications. Engineered to meet UL 891, CSA, ANSI, IEEE, and NEMA PB-2 standards, our switchboards are available in both standard and fully custom configurations—supporting ampacity up to 12,000A and short-circuit ratings up to 200kA at 480V.

Whether you're sourcing equipment for a data center, a manufacturing plant, or a utility application, FATENG's switchboard solutions are modular, scalable, and built to meet the highest electrical performance demands.


Technical Summary

Parameter Value
Standards UL 891, CSA, ANSI, IEEE, NEMA PB-2
Voltage Up to 600VAC / 250VDC
Main Bus Ampacity 400A to 12,000A
Short Circuit Rating 200kA @ 480V, 100kA @ 600V
Enclosure Type NEMA 1 / 3R
Protection Level Indoor & Outdoor Use
Surface Finish Powder-coated, ANSI 61 Gray (Custom optional)
Seismic Tested IEEE 344, ICC-ES-AC156 compliant

Key Features

  • Voltage Rating: Up to 600VAC / 250VDC

  • Ampacity: 400A to 12,000A

  • Short-Circuit Withstand:

    • 200kA @ 480V

    • 100kA @ 600V

    • 100kA multi-metering with MCCBs

  • Breaker Types: UL489 / UL1066 fixed or draw-out, thermal-magnetic or electronic, 80% or 100% rated

  • Enclosures: NEMA 1 / NEMA 3R (Indoor & Outdoor), ANSI 61 Gray powder coat standard (custom colors optional)

  • Construction: Rigid frame with bus & breaker isolation

  • Seismic Tested: Meets IEEE 344 & ICC-ES-AC156 requirements


Design Flexibility

  • Fully Customizable Sheet Metal Design
    Adaptable to site space, cable routing, and transformer/bus duct interface needs.

  • Bus System Options

    • Tin-plated or silver-plated copper, or aluminum

    • Copper rated at 1000A/in², aluminum rated at 750A/in²

    • Fully rated based on density—not just heat-rise testing—for lower temperature rise and greater efficiency.

  • Component Integration Options

    • Automatic Transfer Switches (ATS)

    • Surge Protection Devices (SPD)

    • Distribution Transformers

    • PLC or relay-based control schemes

    • Advanced Metering, Monitoring & Automation

  • Breaker & Switch Mounting Options

    • Group-mounted or individually-mounted

    • Fixed or draw-out breakers

    • Fusible switches for mains/feeders or hybrid combinations







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Applications

  • Commercial Buildings & Multi-Tenant Installations
    Optimized for load metering, MCCB configurations, and space-conscious design.

  • Industrial Facilities & Data Centers
    High-capacity and scalable for mission-critical infrastructure.

  • Power Utilities & Substations
    Compatible with transformer and bus duct feeds; integrated automation options.

  • Hospitals & Airports
    Where high reliability, low temperature rise, and rapid serviceability are essential.



Reliability & Safety

  • Short-Circuit Braced Construction: Rated to withstand up to 3 cycles (.05 sec.)

  • UL Listed Components: All breakers and switches are UL489 / UL1066 certified

  • Compartmentalized Metering: Designed to meet utility metering standards

  • Enhanced Coating Finish: Powder-coated for indoor/outdoor use, with salt-spray resistance up to 3000 hours

  • Front, Rear & Side Accessibility: For easier installation and maintenance


Why Choose FATENG UL891 Switchboards?

Feature FATENG Advantage
Customization Tailored enclosure, bus, and component configurations
Ampacity Up to 12,000A, one of the highest in the industry
Short-Circuit Performance 200kA @ 480V, 100kA @ 600V with suitable breakers
Component Compatibility Fully supports major brands like Schneider, Eaton, ABB, etc.
Modular Design Scalable & service-friendly
Global Compliance UL, cUL, CSA, ANSI, IEEE, NEMA