166J25C

Overview

The Hammond Manufacturing 166J25C is a low voltage industrial power transformer designed for chassis mounting. It features a laminated core with single primary and single secondary windings. The unit operates at 50 Hz or 60 Hz with a primary voltage rating of 117 VAC (also listed as 115 VAC in some specifications) and a secondary voltage rating of 25 VAC. The power rating is 25 VA, delivering a maximum secondary current of 1 A. Physical dimensions are 3.25 inches in length, 2 inches in width, and 2 inches in height. It utilizes wire leads for termination and functions within an operating temperature range of 0°C to +130°C.

Feature Summary

• Chassis mount construction with wire lead terminations for direct integration into control panels
• Single primary and single secondary winding configuration providing isolated low voltage output
• Laminated core design optimized for standard 50/60 Hz industrial power frequencies

Applications

• Industrial control panel power supply units
• Low voltage equipment requiring 25V AC isolation
• General purpose industrial machinery control circuits

Procurement Notes

Verify the specific primary voltage requirement against your system input, as sources cite both 115 VAC and 117 VAC. Confirm that the single secondary winding configuration meets your circuit needs rather than a center-tapped alternative. Ensure chassis mounting space accommodates the specified physical dimensions and that wire lead connections align with your assembly interface.

Selection Notes

Select this model when a 25 VA capacity is sufficient for the load. Compare against the 166J25B if a center-tapped secondary is required instead of a single winding. Consider the 266M25 if higher power ratings or dual primary windings for 115/230 VAC compatibility are necessary. Verify thermal management requirements given the 130°C maximum operating temperature limit.

Part Context

This component belongs to the Hammond 166 series of industrial control transformers. The series offers various power ratings and winding configurations tailored for different voltage step-down applications. The 166J25C specifically addresses needs for compact, low-voltage power distribution in standard industrial environments using a robust laminated core structure.

Replacement Considerations

The 166J25B serves as a functional substitute if a center-tapped secondary winding is acceptable. For higher power requirements, the 266M25 provides increased capacity with dual primary options. Direct replacement requires matching the 25 VA rating and 25 VAC output specification.