166M25

Overview

The Hammond Manufacturing 166M25 is a low voltage industrial power transformer with a 75 VA rating. It features a single primary winding rated for 115 VAC at 60 Hz and a single secondary winding providing 25 VAC center-tapped output at 3 A. Designed for chassis mounting, it utilizes wire leads for termination. The unit measures 102.4 mm in length, 57.2 mm in width, and 66.8 mm in height, weighing 1.134 kg. It operates within a temperature range of 0°C to +130°C and supports 50/60 Hz frequencies.

Feature Summary

• Chassis mount construction with wire lead terminations
• Single primary and single secondary winding configuration
• Low voltage design suitable for industrial control applications

Applications

• Industrial control panels
• Equipment requiring isolated low voltage power
• General purpose power supply circuits

Procurement Notes

Verify the specific voltage frequency requirement (60 Hz vs 50/60 Hz) against the application datasheet before procurement. Confirm that the chassis mounting style and wire lead termination method are compatible with the target enclosure design. Ensure the 75 VA power rating and 3 A current capacity meet the load requirements without exceeding thermal limits during operation.

Selection Notes

Select this component when a dedicated 115 VAC input to 25 VAC center-tapped output conversion is required for industrial environments. Consider the physical dimensions and weight constraints of the installation space. Evaluate if the 75 VA power rating provides sufficient headroom for peak loads compared to lower-rated alternatives in the 166 series.

Part Context

This transformer belongs to the Hammond 166 series of industrial control transformers. The series offers various power ratings and voltage configurations tailored for different industrial needs. The 166M25 specifically addresses applications needing moderate power isolation with a standard 115 VAC primary input.

Replacement Considerations

Cross-reference part numbers such as 166D25 or other variants within the 166 series for alternative power ratings. Verify electrical compatibility and physical footprint before substituting.