CTMB8003L

Overview

The CTMB8003L is a current transformer mounting base manufactured by nVent Hoffman. Constructed from 12-gauge galvanized steel, it features an electrically isolated mount and termination platform. The unit is rated for 800 Amperes and 600 VAC, with UL 414 approval and a 50,000 Ampere interrupting capacity. It is designed to accommodate differences between line and load connections within CT cabinets.

Feature Summary

• Accommodates preference differences between line and load connections inside CT cabinets
• Features an electrically isolated mount and termination platform
• Pre-punched mounting holes align with studs in compatible CT enclosures

Applications

• Installation within current transformer (CT) cabinets
• Supporting 3-phase electrical systems requiring 800A rating
• Facilitating conductor connection variations in industrial power distribution

Procurement Notes

Verify that the specific application requires the 800A rating and 600VAC voltage limit. Confirm compatibility with existing CT enclosures by checking stud dimensions, specifically 1/2-inch studs on 1-3/4-inch centers. Ensure the galvanized steel material meets environmental corrosion requirements for the installation site.

Selection Notes

Select this model when a 3-phase configuration is required for circuits up to 800 Amperes. Choose this variant over lug-less models if mechanical lugs are necessary for conductor termination. Verify that the unpainted galvanized finish is suitable for the ambient conditions of the enclosure environment.

Part Context

This component belongs to the Hoffman A90CM series of rack accessories. It serves as a critical internal structural element for current transformer cabinets, providing a standardized interface for high-current connections. It complements other Hoffman enclosure components to create complete metering solutions.

Replacement Considerations

Direct substitutes include the CTMB8003 for configurations without mechanical lugs. For applications requiring different conductor connection styles, verify availability of variants matching specific stud or lug requirements within the same series.