265U10

Power Transformers Overview

The Hammond Manufacturing 265U10 is a low voltage filament power transformer designed for chassis mounting. It features a dual primary winding configuration supporting 117V and 234V inputs, paired with a single secondary output of 10V at 17.5A. The unit delivers a total power rating of 175VA and operates at frequencies of 50Hz or 60Hz. Constructed with an open style and a four-hole frame, it utilizes a dual bobbin design that eliminates the need for an electrostatic shield. The component supports a maximum operating temperature of +130°C and includes minimum six-inch leads or copper tabs with holes for connection.

Power Transformers Feature Summary

• Dual primary winding capability for versatile input voltage compatibility
• Open style construction with a four-hole frame for secure chassis mounting
• Dual bobbin design architecture eliminating the requirement for electrostatic shielding

Power Transformers Applications

• Low voltage filament power supply circuits
• High current industrial control panel applications
• Chassis-mounted electronic equipment requiring isolated AC power

Power Transformers Procurement Notes

Verify the specific input voltage requirements against the dual primary specifications (117V/234V) to ensure correct wiring configuration. Confirm that the mechanical dimensions and four-hole frame pattern align with the intended chassis cutout. Ensure the lead length or tab availability meets the internal wiring constraints of the assembly. Check compliance documentation for RoHS status if required by the final product regulations.

Power Transformers Selection Notes

Select this model when a 175VA capacity is sufficient for the load while requiring a compact chassis-mount form factor. The dual primary feature makes it suitable for products distributed across regions with different standard voltages without changing hardware. Consider the open style construction if thermal management relies on natural convection within the enclosure. Verify that the 10V secondary output matches the downstream component requirements exactly.

Power Transformers Part Context

This component belongs to the Hammond 265 Series of power transformers, which are engineered for general-purpose industrial and commercial applications. The series emphasizes robust construction and reliable performance in demanding environments. As a chassis-mount device, it integrates directly into larger electrical assemblies rather than serving as a standalone enclosed unit. The design prioritizes efficiency and thermal stability under continuous operation.

Power Transformers Replacement Considerations

Direct substitutes must match the 175VA rating, 10V secondary output, and dual primary input configuration. Verify that alternative models support the same 50Hz/60Hz frequency range and maintain compatible physical mounting dimensions. Ensure the replacement offers equivalent thermal ratings and lead termination styles to avoid redesigning the chassis interface.