166J25B

Overview

The Hammond Manufacturing 166J25B is an industrial power transformer featuring a laminated core and chassis mount style. It operates at 50 Hz or 60 Hz with a single primary winding rated for 115 VAC input. The secondary output provides 25 VAC center-tapped configuration delivering 1 A current, resulting in a 25 VA power rating. Designed for low voltage applications, it utilizes wire leads for termination. The unit supports an operating temperature range from 0 C to +130 C and measures 3.25 inches in length, 2 inches in width, and 2 inches in height.

Feature Summary

• Provides isolated power conversion with a single primary and single secondary winding configuration for standard industrial control circuits.
• Features a robust chassis mount design with wire lead terminations for secure integration into equipment enclosures.
• Operates reliably across a wide thermal range up to +130 C, suitable for demanding industrial environments.

Applications

• Industrial control panels requiring low voltage power distribution
• Equipment chassis mounting for signal processing circuits
• General purpose power supply isolation in manufacturing machinery

Procurement Notes

Verify the specific suffix designation against official Hammond documentation to confirm terminal configuration and insulation class. Ensure the 115 VAC primary rating matches the local supply frequency of 50 Hz or 60 Hz. Confirm that the chassis mounting dimensions and wire lead lengths meet the mechanical requirements of the target enclosure assembly before finalizing procurement.

Selection Notes

Select this model when a 25 VA capacity with a 25 VAC center-tapped secondary is required for chassis-mounted installations. Compare against the 166J25C if a non-center-tapped secondary is preferred. Consider the 166K25 if higher current capacity of 1.5 A is needed while maintaining similar physical constraints. Verify thermal management needs 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 voltage configurations tailored for panel building and equipment integration. The 166J25B specifically addresses applications needing moderate power isolation with a center-tapped output, fitting within the broader portfolio of laminated core transformers designed for durability and standard electrical compliance.

Replacement Considerations

The 166J25C serves as a direct alternative within the same series but features a non-center-tapped secondary winding instead of the CT configuration found in the 166J25B. Ensure circuit compatibility regarding the absence of a center tap when substituting. Other series members like the 166K25 offer different power ratings and may require mechanical redesign due to size differences.