166J12

Overview

The Hammond Manufacturing 166J12 is a low voltage power transformer designed for industrial control applications. It features a single primary winding rated at 115 VAC, 60 Hz, and a center-tapped secondary output of 12.6 VAC. The unit has a power rating of 12.6 VA with a secondary current capacity of 1 A. Physical dimensions are 71.37 mm in length, 41.4 mm in width, and 42.93 mm in height. It utilizes wire leads for termination and supports chassis mounting via horizontal channel brackets.

Feature Summary

• Open style construction for efficient heat dissipation
• Single primary winding configuration for standard line voltage input
• Center-tapped secondary design suitable for rectifier circuits
• Chassis mount capability using C-style or open horizontal brackets

Applications

• Industrial control panels requiring low voltage power
• Rectifier circuit power supplies
• Filament heating applications
• General purpose industrial equipment power distribution

Procurement Notes

Verify the specific suffix and packaging configuration when ordering to ensure compatibility with existing inventory systems. Confirm that the wire lead length meets the spatial requirements of the target enclosure. Check RoHS compliance status if environmental regulations apply to the deployment region. Ensure the mounting bracket type matches the chassis design specifications before finalizing the purchase order.

Selection Notes

Select this model when a 12.6 VAC center-tapped output is required from a 115 VAC source. The 12.6 VA rating determines the maximum load capacity; ensure connected devices do not exceed 1 A continuous current. Consider the physical footprint of 71.37 x 41.4 x 42.93 mm for enclosure integration. Verify that the open style construction aligns with ventilation and safety clearance requirements within the assembly.

Part Context

This component belongs to the Hammond 166 series of low voltage transformers. The series offers various voltage and wattage combinations tailored for industrial control environments. Similar models include the 166G12 and 166LA12, which differ in power ratings and secondary voltages while maintaining comparable mounting styles and primary input specifications.

Replacement Considerations

Direct substitutes within the same series include the 166G12 for lower power applications or the 166LA12 for higher current needs. Verify that any replacement maintains the 115 VAC primary input and compatible chassis mounting dimensions. Cross-reference secondary voltage tolerances to ensure circuit compatibility.