166R5

Overview

The Hammond Manufacturing 166R5 is a low voltage industrial power transformer designed for chassis mounting. It features a laminated core construction with a single primary winding and a single secondary winding. The unit operates at 50 Hz or 60 Hz frequencies. Key electrical specifications include a power rating of 40 VA, a primary voltage rating of 115 VAC, and a secondary voltage rating of 5 VAC center-tapped. The secondary current rating is 8 A. The transformer utilizes wire leads for termination. Physical dimensions are 82.55 mm in length, 41.4 mm in width, and 50.8 mm in height. The operating temperature range extends from 0 C to +130 C.

Feature Summary

• Chassis mount design for secure installation
• Laminated core construction for efficient power transfer
• Single primary and single secondary winding configuration
• Wire lead termination for direct circuit connection

Applications

• Industrial control systems requiring low voltage power
• Equipment needing 115V AC input conversion
• Applications requiring 5V CT output at high current

Procurement Notes

Verify the specific suffix requirements when ordering, as Hammond Manufacturing often uses alphanumeric codes to denote variations in lead length, insulation type, or mounting hardware. Confirm that the base part number 166R5 matches the exact electrical and physical specifications required for your design before finalizing the purchase order. Cross-reference the manufacturer's official datasheet to ensure compatibility with your system's thermal and spatial constraints.

Selection Notes

Select this component when a 40 VA capacity is necessary for industrial applications. Ensure the available space accommodates the specified dimensions of 82.55 mm by 41.4 mm by 50.8 mm. Verify that the chassis mounting style aligns with your enclosure design. Consider the 50/60 Hz operational frequency to match your power source. Confirm that the wire lead termination method suits your wiring harness or PCB layout requirements.

Part Context

The 166R5 belongs to Hammond Manufacturing's 166 series of industrial power transformers. This series is characterized by robust construction suitable for demanding environments. Other models in the series offer varying voltages and power ratings, such as the 166G16 and 166G30, allowing designers to scale power delivery while maintaining consistent form factors and mounting styles across different project requirements.

Replacement Considerations

Direct substitutes within the same series include the 166G16 and 166G30, though these differ significantly in power rating and secondary voltage. Any replacement must be verified against the original 40 VA rating and 5 VAC CT specification to ensure functional equivalence in the target application.