AL-401

Current Sense Transformers Overview

The Instrument Transformer AL-401 is a solid core instrument grade current transformer designed for precise electrical measurements. It features a primary-to-secondary ratio of 400:5 and supports an accuracy class of Class 1 with a burden rating of 10 VA. The unit operates within a frequency range of 50Hz to 400Hz and utilizes a plain ring window type construction with wire leads. Physical dimensions are approximately 26.7 mm in diameter, with overall size specifications of 1.05 inches by 2.47 inches by 2.74 inches. It is rated for indoor use and carries CSA and UR certifications.

Current Sense Transformers Feature Summary

• Solid core construction for reliable current sensing
• Class 1 accuracy for precision instrumentation applications
• Wide frequency operational range from 50Hz to 400Hz
• CSA and UR certified for safety compliance

Current Sense Transformers Applications

• Indoor electrical metering systems
• Precision control circuits requiring accurate current feedback
• Instrumentation panels and switchgear monitoring
• Power quality analysis equipment

Current Sense Transformers Procurement Notes

Verify the specific manufacturer origin, as listings reference both Instrument Transformer Inc. and GE Current Transformers divisions. Confirm that the required lead time and warranty terms align with project schedules. Ensure the physical mounting configuration matches existing panel constraints. Cross-reference the certification marks (CSA/UR) with local regulatory requirements before finalizing the purchase order.

Current Sense Transformers Selection Notes

Select this model when a 400:5 ratio and Class 1 accuracy are mandatory for the application. Consider the 10 VA burden limit to ensure connected instruments do not exceed thermal or accuracy thresholds. Verify that the operating frequency falls within the 50Hz to 400Hz specification. Evaluate the solid core design against installation space limitations compared to split-core alternatives.

Current Sense Transformers Part Context

This component belongs to the family of instrument-grade current transformers used for stepping down high currents for measurement purposes. It serves as a critical interface between high-voltage power lines and low-voltage monitoring devices. The designation AL-401 specifically denotes the 400:5 ratio variant within the product line, distinguishing it from other capacity ratings.

Current Sense Transformers Replacement Considerations

Direct substitutes include models with identical 400:5 ratios and Class 1 accuracy ratings. Verify compatibility regarding the 10 VA burden and 50-400Hz frequency range. Ensure replacement units maintain the same physical window diameter and mounting style to fit existing infrastructure without modification.