266L20

Power Transformers Overview

The Hammond Manufacturing 266L20 is an industrial control transformer designed for chassis mounting. It features a power rating of 40 VA with dual primary windings supporting 115 VAC and 230 VAC inputs at 50 Hz or 60 Hz frequencies. The secondary configuration provides a center-tapped output of 20 VAC, delivering 2 A, or alternatively 10 VAC at 4 A. The unit utilizes wire leads for termination and operates within a temperature range of 0°C to +130°C. Physical dimensions are approximately 73.15 mm in length, 48.26 mm in width, and 60.19 mm in height, with a weight of 453.592 g.

Power Transformers Feature Summary

• Dual primary winding capability allows flexible connection for either 115 VAC or 230 VAC input systems.
• Dual secondary windings can be configured as a single center-tapped winding or used individually for varied voltage requirements.
• Open-style construction facilitates chassis mounting and integration into industrial control panels.

Power Transformers Applications

• Industrial control panel power supply
• Low voltage filament heating applications
• General purpose industrial automation equipment

Power Transformers Procurement Notes

Verify the specific secondary voltage configuration required for your application, as the unit supports both 20V @ 2A and 10V @ 4A outputs depending on wiring. Confirm that the chassis mounting style and wire lead termination are compatible with your enclosure design. Ensure the operating environment stays within the specified 0°C to +130°C temperature range to maintain performance and safety standards.

Power Transformers Selection Notes

Select this model when a 40 VA capacity is sufficient for the load. The dual primary feature makes it suitable for regions with varying standard voltages. Consider the physical dimensions and open-style design for thermal management and space constraints. Verify that the wire lead termination method aligns with the available connection points in the target assembly.

Power Transformers Part Context

This component belongs to the Hammond 266 Series of industrial control transformers. The series offers various power ratings from 6 VA to higher capacities, all sharing similar chassis-mount construction and dual-winding flexibility. The 266L20 represents a mid-range option in terms of power delivery, balancing size and output for common control circuit needs.

Power Transformers Replacement Considerations

Direct substitutes within the same series include models like 266L12 (31.5 VA) or 266L28 (56 VA) if power adjustments are acceptable. Ensure any replacement maintains the dual primary and dual secondary winding architecture to preserve installation compatibility.