37021

Overview

The Simpson Electric 37021 is a current transformer designed for electrical measurement applications. It features a solid core construction with a window diameter of 40mm and a transformation ratio of 150:5. The device supports an input frequency range of 50Hz to 400Hz and has a power rating of 5VA at 60Hz. It includes footed mounting with stud terminals and provides insulation class 0.6kV BIL with 10kV full wave capability.

Feature Summary

• Solid core design with footed mounting and stud terminals
• Supports frequency range from 50Hz to 400Hz
• Provides 150:5 current transformation ratio
• Insulation rated for 0.6kV BIL and 10kV full wave

Applications

• Electrical panel metering systems
• Current monitoring in industrial equipment
• Power distribution circuit analysis

Procurement Notes

Verify the specific insulation class and accuracy requirements against project specifications, as sources indicate variations such as ±2.0% or 1% Class. Confirm terminal type compatibility and mounting dimensions before ordering. Check regional availability as some distributors may have restricted stock or shipping limitations for this component.

Selection Notes

Select this model when a 150:5 ratio is required for currents up to 150A AC. Ensure the operating frequency falls within the 50-400Hz range. Consider the physical dimensions and mounting style if space constraints exist in the installation environment.

Part Context

Simpson Electric Company manufactures specialized electrical measurement instruments. The 37021 belongs to their line of current transformers used for accurate current sensing in various electrical systems. The company has been producing these devices since its establishment in 1936.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Verify compatibility with existing panel meters and wiring configurations before considering alternative components.