166U5

Overview

The Hammond Manufacturing 166U5 is an industrial power transformer designed for low voltage applications. It features a single primary winding rated for 115 VAC at 60 Hz and a single secondary winding providing 5 VAC center-tapped output. The unit delivers a power rating of 75 VA with a secondary current capacity of 15 A. Constructed as an open-style transformer, it utilizes wire leads for termination. The component operates within a temperature range of 0°C to +130°C and supports frequencies of 50 Hz or 60 Hz.

Feature Summary

• Provides high-current secondary output suitable for filament and rectifier circuits
• Features an open construction style for flexible integration into custom assemblies
• Utilizes wire lead terminations for direct connection capabilities

Applications

• Filament power supply circuits
• Low voltage rectifier applications
• Industrial control panel power distribution

Procurement Notes

Verify the specific manufacturing date code and RoHS compliance status directly with the supplier or manufacturer documentation before procurement. Ensure that the open-frame design requirements align with the final enclosure specifications, as this model lacks integrated housing. Confirm that the 15 A secondary current rating meets the load demands of the intended circuit application without exceeding thermal limits.

Selection Notes

Select the 166U5 when a robust 75 VA transformer is required for high-current low-voltage tasks. This model is appropriate for designs needing a 5 VAC center-tapped source from a standard 115 VAC input. Consider the open-frame form factor if space constraints allow for external mounting and if additional shielding or environmental protection will be provided by the system chassis rather than the transformer itself.

Part Context

The 166U5 belongs to the Hammond Manufacturing 166 series of industrial control transformers. This series is characterized by its reliability in demanding environments and its variety of power ratings and voltage configurations. The 166U5 specifically addresses the need for higher current outputs compared to lower VA models in the same family, making it distinct for heavy-duty low-voltage applications.

Replacement Considerations

Consult official Hammond Manufacturing cross-reference documents for verified substitute part numbers. Generic replacements may not match the specific 15 A current rating or 75 VA power envelope. Verify dimensional compatibility and terminal configuration before substituting.