166J5

Overview

The Hammond Manufacturing 166J5 is an industrial control power transformer designed for chassis mounting. It features a single primary winding rated at 115 VAC and a single secondary winding providing 5 VAC with a center tap configuration. The unit has a power rating of 5 VA and supports a maximum secondary current of 1 A. Operating frequencies include both 50 Hz and 60 Hz. The device utilizes wire leads for termination and functions within a temperature range of 0°C to +130°C.

Feature Summary

• Provides low voltage step-down conversion from standard line voltage for industrial control circuits
• Features a center-tapped secondary winding to support dual polarity or rectified DC applications
• Constructed with a laminated core design for efficient electromagnetic energy transfer
• Designed for secure chassis mounting using wire lead terminations

Applications

• Industrial control panel power supplies
• Low voltage signaling circuits
• Relay coil excitation systems
• Electronic equipment internal power distribution

Procurement Notes

Verify that the required secondary voltage matches the specific 5V AC center-tapped specification, as other variants in the 166 series offer different voltages and wattage ratings. Confirm that the chassis mounting style and wire lead termination are compatible with the target enclosure design. Ensure the operating environment remains within the specified thermal limits to maintain performance and safety compliance.

Selection Notes

Select this model when a precise 5V AC output with a center tap is required for low-power industrial applications. The 5 VA rating suits small control loads but may be insufficient for higher current demands; consider higher wattage models if load requirements exceed 1 A. Verify compatibility with both 50 Hz and 60 Hz input sources if frequency variability exists in the deployment environment.

Part Context

The 166J5 belongs to the Hammond Manufacturing 166 series of industrial control transformers. This series provides various power ratings and voltage configurations tailored for general-purpose industrial use. Components in this family share common mounting styles and termination methods, ensuring consistency across different power requirements while maintaining standardized physical dimensions for easy integration into control panels.

Replacement Considerations

Direct substitutes within the same series include the 166J25C, 166J6, and 166G8, though these differ significantly in power rating and secondary voltage specifications. Cross-series replacements require careful evaluation of electrical parameters and physical footprint constraints to ensure functional equivalence without modifying existing wiring or mechanical structures.