166JB24

Overview

The Hammond Manufacturing 166JB24 is a laminated core power transformer designed for chassis mounting. It features a single primary winding rated at 115 VAC, 60 Hz, and a center-tapped secondary output of 24 VAC with a current rating of 1 A. The unit has a power capacity of 24 VA. Physical dimensions are approximately 3.25 inches in length, 1.75 inches in width, and 2.00 inches in height. Lead lengths are specified as 6 inches for both primary and secondary connections.

Feature Summary

• Laminated core construction for efficient low-voltage power conversion
• Single primary winding configuration compatible with standard 115V AC lines
• Center-tapped secondary design suitable for rectifier circuits
• Chassis mount style utilizing horizontal channel bracket or open horizontal installation

Applications

• Filament power supply for vacuum tubes
• Low-voltage rectifier applications
• Industrial control panel power distribution
• General purpose low voltage AC power conversion

Procurement Notes

Verify the specific lead length requirements against your assembly drawings, as the standard specification indicates 6-inch leads for both primary and secondary windings. Confirm that the chassis mounting holes align with the C-style bracket or open horizontal mounting options provided by the manufacturer. Ensure the input voltage matches the 115 VAC, 60 Hz rating to prevent operational failure. Check for any regional compliance certifications required for your specific deployment environment.

Selection Notes

Select this model when a 24 VA capacity is sufficient for the load. The center-tapped secondary is essential if full-wave rectification is required using a diode bridge or center-tapped rectifier setup. Consider the physical envelope of 3.25 x 1.75 x 2.00 inches for enclosure space planning. This component is intended for chassis mounting; ensure adequate clearance for heat dissipation and wire routing around the 6-inch leads.

Part Context

This transformer belongs to the Hammond 166 series, which offers various voltage and wattage configurations. The 166JB24 specifically provides a 24V CT output, distinguishing it from other variants like the 166J12 (12.6V) or 166JB24's non-CT counterparts. It is part of a standardized line of industrial power transformers known for consistent performance in control applications.

Replacement Considerations

Direct replacements must match the 24 VA rating, 115V primary, and 24V CT secondary specifications. Verify dimensional compatibility for chassis mounting. Cross-reference with Hammond part numbers such as 166J25B for similar form factors but different electrical ratings.