CTMB8001

Overview

The CTMB8001 is a current transformer mounting base manufactured by Hoffman Enclosures, Inc. It is constructed from 12-gauge galvanized steel and features an electrically isolated mount and termination platform. The unit is designed for 1-phase, 3-wire service applications with an ampacity rating of 400 to 800 amperes. It supports a maximum AC voltage of 600 V and has an Ampere Interrupting Capacity (AIC) rating of 50,000 A. The base includes two CT provisions and utilizes studs for connection.

Feature Summary

• Constructed from 12-gauge galvanized formed steel for durability
• Features an electrically isolated mount and termination platform
• Pre-punched mounting holes align with studs in compatible CT enclosures

Applications

• Current transformer mounting for 1-phase systems
• Electrical service installations rated 400-800 amperes
• Enclosures requiring UL 414 approval compliance

Procurement Notes

Verify that the specific installation environment matches the galvanized finish requirements. Confirm compatibility with existing CT enclosures by checking stud alignment and spacing specifications. Ensure the electrical load does not exceed the 800-ampere rating or 600-volt maximum. Review UL 414 listing documentation to confirm regulatory compliance for the intended application scope.

Selection Notes

Select this component when a robust, pre-formed base is required for high-amperage single-phase current transformers. The galvanized finish provides corrosion resistance suitable for various industrial environments. The design simplifies installation by providing pre-aligned mounting holes that correspond directly to standard CT enclosure studs, reducing assembly time and ensuring proper grounding isolation.

Part Context

This part belongs to the Hoffman A90CM series of rack accessories. It is specifically engineered as a base solution for current transformer enclosures. The product line focuses on providing standardized mounting infrastructure for electrical measurement and protection devices within industrial panel boards and switchgear assemblies.

Replacement Considerations

No public substitute part numbers are confirmed.