Code-compliant power distribution assemblies built to specification
Turtle manufactures and modifies UL 67 panelboards and UL 891 switchboards to meet commercial and industrial power distribution requirements. Our assemblies are engineered for inspection approval, coordinated installation, and dependable performance.
We support projects requiring rapid deployment, duplicate panel runs, and specification-driven modifications.
What is a UL 67 panelboard?
A UL 67 panelboard is a power distribution assembly used to divide electrical service into branch circuits. It is evaluated for safety, short circuit ratings, enclosure types, and overcurrent protection compliance.
UL 67 panelboards are commonly used in:
- Commercial buildings
- Institutional facilities
- Light industrial applications
What is a UL 891 switchboard?
A UL 891 switchboard is a large-scale power distribution assembly that supports higher amperage systems and service entrance applications.
Typical switchboard ratings include:
- Up to 480 volts
- Up to 4000 amps
- Up to 100kAIC
- NEMA 1 or NEMA 3R enclosures
UL 891 assemblies are used in:
- Manufacturing plants
- Healthcare facilities
- Data centers
- Infrastructure projects
Switchboard and panelboard modification services
Turtle provides modification of standard OEM assemblies from manufacturers such as Eaton and ABB. Our capabilities include:
- Breaker configuration adjustments
- Metering integration
- Non-utility metered board builds
- Device additions or replacements
- Duplicate production runs for multi-site installations
We specialize in applications with completed control drawings and defined specifications, enabling efficient turnaround.
Stocking strategy and lead time advantage
Our panel shop maintains select inventory to support accelerated project timelines, including:
- Insulated case breakers
- Standard enclosure configurations
- Frequently specified panelboard formats
This approach reduces dependency on extended OEM manufacturing cycles and supports faster project execution.
What’s the ideal project fit for UL 67 and UL 891 solutions?
Our UL 67 and UL 891 solutions are well suited for:
- Duplicate panel programs
- Standardized facility rollouts
- Defined specification projects
- Power distribution upgrades
Our process ensures consistent quality across all produced assemblies.
Inspection and quality assurance
Each assembly undergoes:
- Mechanical inspection
- Torque verification
- Label validation
- Compliance review
- Documentation preparation
Inspection-ready manufacturing reduces field delays and improves installation efficiency.
Request a distribution assembly quote
Submit your panel schedule, single line diagram, or switchboard specification for review. Our team will validate ratings, confirm configuration feasibility, and provide a coordinated production timeline.
Contact Turtle today to discuss your power distribution project.
Let's discuss your project requirements
