187B28

Power Transformers Overview

The Hammond Manufacturing 187B28 is a low voltage power transformer designed for chassis mounting. It features a laminated core construction with a single primary winding rated at 115 VAC and a single secondary winding providing 28 VAC center-tapped output. The unit delivers a power rating of 5.6 VA, supporting a secondary current of 200 mA. Physical dimensions are 60.2 mm in length, 31.75 mm in width, and 34.79 mm in height. Connections are made via quick connect terminals.

Power Transformers Feature Summary

• Chassis mount design for secure installation
• Laminated core construction for efficient operation
• Single primary and single secondary winding configuration
• Quick connect terminal type for simplified wiring

Power Transformers Applications

• Industrial automation control panels
• PLC system power supplies
• Electrical enclosure internal power distribution
• Low voltage circuit powering

Power Transformers Procurement Notes

Verify the specific part number against official manufacturer documentation to ensure compatibility with existing chassis designs. Confirm that the 115 VAC primary input matches the available supply voltage. Check that the 5.6 VA rating and 200 mA secondary current meet the load requirements of the target application. Ensure physical clearance allows for the specified dimensions and quick connect terminal access.

Power Transformers Selection Notes

Select this component when a compact, chassis-mountable transformer is required for low voltage applications. The 187 series offers standardized dimensions suitable for various industrial enclosures. Consider the 5.6 VA power limit and 28 VAC CT output when designing the downstream circuitry. Verify that the quick connect interface aligns with the available PCB or wire harness connectors in the assembly.

Power Transformers Part Context

This component belongs to the Hammond Manufacturing 187 Series, which provides a range of low voltage power transformers. These units are characterized by their small footprint and chassis mounting style, making them ideal for space-constrained industrial environments. The series typically includes various voltage and wattage options to support different control circuit needs.

Power Transformers Replacement Considerations

Direct substitutes within the same series include models like 187B16 and 187B120, though these offer different secondary voltages and current ratings. Any replacement must match the 115 VAC primary input and chassis mounting form factor. Verify that the alternative part's VA rating meets or exceeds the 5.6 VA requirement.