166M2

Overview

The Hammond Manufacturing 166M2 is a laminated core power transformer designed for chassis mounting. It features a single primary winding rated at 115V and a single secondary winding with center tap, providing 2.5V at 3A. The unit has a maximum power rating of 7.5VA and offers 2000Vrms isolation voltage. Physical dimensions are 71.37mm in length, 38.10mm in width, and a maximum height of 42.93mm. It utilizes wire lead termination and operates within a temperature range supported by its insulation class.

Feature Summary

• Laminated core construction for efficient low-voltage power transformation
• Center-tapped secondary winding configuration for rectifier applications
• Chassis mount installation style with wire lead terminations
• High isolation voltage capability for industrial safety

Applications

• Industrial control panel power supplies
• Low voltage filament heating circuits
• Rectifier input stages in electronic equipment
• General purpose AC to DC power conversion systems

Procurement Notes

Verify the specific part number suffix against the manufacturer's current datasheet to ensure compatibility with required voltage and current specifications. Confirm that the chassis mounting holes align with the design enclosure. Check for RoHS compliance status if environmental regulations apply to the final assembly. Ensure wire lead lengths meet the system integration requirements before purchase.

Selection Notes

Select this component when a low voltage, high current output is required from a standard 115V primary source. The 7.5VA rating suits small-scale industrial controls. Consider the physical footprint constraints due to the chassis mount design. Verify that the 2.5V center-tapped output matches the downstream circuit requirements. Compare thermal performance against ambient operating conditions.

Part Context

This transformer belongs to the Hammond 166 series, which provides a range of industrial control transformers. The series includes various power ratings and voltage configurations to support different industrial automation needs. The 166M2 specifically addresses applications requiring low voltage outputs with moderate current capabilities. It is part of a standardized line of laminated core transformers known for reliability in harsh environments.

Replacement Considerations

Direct substitutes include other Hammond 166 series models with matching electrical parameters. Cross-reference part numbers such as 166G16 or 166M10 only if voltage and current requirements differ. Ensure any replacement maintains the same chassis mounting dimensions and terminal type. Verify that the new component meets the same isolation and thermal standards.