166G20

Overview

The Hammond Manufacturing 166G20 is a laminated core industrial power transformer designed for chassis mounting. It features a dual primary winding configuration supporting both 115 VAC and 230 VAC input voltages at 50 Hz or 60 Hz frequencies. The unit delivers a 10 VA power rating with a secondary output of 20 VAC center-tapped, providing up to 0.5 A current capacity. Physical dimensions are 73.15 mm in length, 48.26 mm in width, and 60.19 mm in height, weighing approximately 453.59 g. It operates within a temperature range of 0°C to +130°C and utilizes wire leads for termination.

Feature Summary

• Dual primary winding design enables flexible voltage selection between 115 VAC and 230 VAC inputs.
• Chassis mount construction with horizontal channel bracket for secure installation.
• Low voltage filament application optimized for industrial control environments.

Applications

• Industrial control panel power supply
• Equipment requiring low voltage AC power distribution
• Filament heating circuits in electronic devices

Procurement Notes

Verify the specific datasheet version when ordering, as Hammond Manufacturing may update dimensional drawings or lead times without altering the part number. Confirm that the required input voltage matches the dual primary capability before integration. Ensure chassis mounting space accommodates the specified physical footprint and wire lead lengths. Cross-reference the 10 VA rating against peak load requirements to prevent thermal overload during operation.

Selection Notes

Select this model when a compact, chassis-mountable transformer is needed for standard 115V or 230V line frequencies. The dual primary feature simplifies inventory management for global deployments. Consider the 10 VA limit for continuous duty applications. Compare against the 266 series if higher power ratings or different form factors are required. Verify that the center-tapped secondary configuration aligns with downstream rectification or circuit design needs.

Part Context

The 166G20 belongs to the Hammond 166 series of industrial control transformers. This series is characterized by laminated core construction and robust chassis mounting options. It serves as a foundational component for converting standard line voltage to lower, safer levels for control circuits. The product line emphasizes reliability in harsh industrial environments with wide operating temperature ranges.

Replacement Considerations

The 266G20 is a documented substitute within the same manufacturer's portfolio, offering identical electrical specifications but potentially differing physical dimensions or mounting styles. Verify mechanical fit before substitution. No other cross-manufacturer equivalents are confirmed in public documentation.