166Q12

Overview

The Hammond Manufacturing 166Q12 is a low-voltage industrial power transformer designed for chassis mounting. It features a laminated core construction with a single primary winding and a center-tapped secondary winding. The unit operates at 50 Hz or 60 Hz and has a power rating of 75.6 VA. The primary voltage is rated at 115 VAC, while the secondary provides 12.6 VAC center-tapped at 6 A. Physical dimensions are 75.6 mm in length, 41.4 mm in width, and 50.8 mm in height. It utilizes wire leads for termination and functions within an operating temperature range of 0°C to +130°C.

Feature Summary

• Laminated core design optimized for low-voltage applications
• Center-tapped secondary winding configuration
• Chassis mount installation style with wire lead terminations

Applications

• Filament power supply circuits
• Low voltage rectifier systems
• Industrial control equipment power distribution

Procurement Notes

Verify that the specific order matches the 166Q12 part number exactly, as the 166 series includes variants with different voltages and current ratings. Confirm that the required secondary current capacity meets the 6 A specification. Ensure the chassis mounting holes align with the specified physical dimensions before procurement. Check for compliance with local electrical safety standards for industrial transformers.

Selection Notes

Select this model when a 75.6 VA capacity is required for low-voltage isolation. The 12.6 VAC center-tapped output is suitable for full-wave rectification applications. Consider the chassis mount form factor if space constraints require a compact footprint. Verify that the 115 VAC primary input matches the available line voltage. The wide operating temperature range supports use in demanding industrial environments.

Part Context

The 166Q12 belongs to the Hammond 166 series of industrial control transformers. This series offers various power ratings and voltage configurations to suit different industrial needs. The 166Q12 represents a higher-power option within the low-voltage segment, providing robust performance for filament and rectifier loads compared to lower-rated counterparts in the same family.

Replacement Considerations

Direct substitutes within the 166 series include models like 166J12 (12.6 VA) or 166G12 (6.3 VA), though these offer significantly lower power ratings. For equivalent 75.6 VA performance, verify other manufacturers' low-voltage transformers with matching 115 VAC primary and 12.6 VAC CT secondary specifications. Ensure any replacement maintains the chassis mount style and wire lead termination type.