Low-Voltage UL 891 Switchboards

SWITCHBOARDS

Engineer-to-order dead-front switchboards for service entrance, main distribution, and emergency power applications.

CODI builds custom UL 891 listed switchboards for service entrance, main distribution, emergency power, and commercial power distribution applications. Each dead-front switchboard is engineered around your voltage, ampacity, fault current, breaker standard, enclosure rating, and site-specific requirements.

Manufactured in Littleton, Colorado, CODI switchboards give facility teams a configurable alternative to catalog-only equipment, with clean documentation, multi-brand breaker flexibility, and shorter lead times than traditional national OEM channels.

400A–5000A

120/208V–347/600V

65-200kAIC

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KEY FEATURES

Custom Configuration

Engineered to your project's exact voltage, ampacity, fault current, and breaker requirements — not a catalog solution.

UL 891 Listed Dead-Front

Every switchboard ships UL 891 listed as a dead-front assembly, preventing access to live bus and components during normal operation.

High-Capacity Bus

Main bus ratings from 400A to 5000A; silver-plated copper or tin-plated aluminum bus available.

High Fault Current Ratings

Short-Circuit Current Ratings (SCCR) 65kAIC standard up to 200kAIC to match facility fault current requirements.

Multi-Brand Breaker Compatibility

Accommodates molded-case and insulated-case circuit breakers from major manufacturers (Siemens, Eaton, ABB, etc.) — no proprietary lock-in.

Enclosure Options

TYPE 1 (indoor) and TYPE 3R (outdoor) configurations; stainless steel available for corrosive environments.

FULL SPECIFICATIONS

Applicable Standard: UL 891 – Dead-Front Switchboards

Applicable Codes: NEC (ANSI/NFPA 70); CSA C22.2 No. 244 (Canada, when applicable)

Maximum Voltage Rating: Up to 600 V AC nominal (maximum 1,000 V within UL scope)

Intended Application: Commercial and Light Industrial Power Distribution
Voltage: Configurable for 208Y/120V, 480Y/277V, and 600V 3-Phase AC systems

Ampacity: Available in continuous current ratings from 400A to 4000A

Short Circuit Current Rating (SCCR): Standard 65kAIC bracing; options available up to 100kAIC to match facility fault current requirements

Environmental: TYPE 3R (Outdoor) rating standard for protection against rain, sleet, and snow; Stainless Steel available for corrosive environments

Service Entrance: Optional Service Entrance (SE) rating allows the unit to serve as the primary disconnect point (per NEC 230)
Construction: Dead-front per UL 891

Enclosure: Galvannealed steel with powder-coat or stainless steel finish

Rating: NEMA 1 (indoor) and NEMA 3R (outdoor)

Seismic: Available with bracing to meet project-specific requirements per IBC 1613 and ASCE 7

Mounting: Free-standing configurations standard; wall-mount availability dependent on ampacity and breaker frame size

Access: Padlockable front doors with three-point latching

Cable Entry: Removable gland plates and bottom-feed provisions for conduit routing and cable termination

Bus: High-conductivity silver-plated copper or tin-plated aluminum; fully rated neutral and ground bus options available
Connection Type: Industry-standard Series 16 Cam-Lock receptacles (color-coded to voltage) for rapid, tool-free generator cabling deployment

Circuit Breakers: Universal design accommodates power breakers from major manufacturers (Eaton, Siemens, ABB, etc.) to match existing site standards

Surge Protection: Integrated Type 1 or Type 2 Surge Protective Devices (SPD) available to shield sensitive downstream electronics from transient voltage spikes

Instrumentation: Phase Rotation Monitor and optional Voltage Indicator(s) ensure safe synchronization with facility power systems before connection
SCCR: Rated and marked per UL 891 to project-specific short circuit current requirements

Trip Settings: LSI and LSIG configurations available

Arc-Flash Risk Reduction: Energy-reducing maintenance settings per NFPA 70 240.87; compatible with AERMS, DAS (Siemens), and RELT (ABB)

Zone-Selective Interlocking: Available where applicable

Ground Fault Protection: Per NFPA 70B

Thermal Inspection: Compliance-ready designs for routine infrared inspection