DP-241-7-20

Overview

The Signal Transformer DP-241-7-20 is a laminated core power transformer designed for industrial applications. It features a dual primary winding configuration supporting 115 VAC and 230 VAC input voltages. The unit provides a single secondary output of 20 VAC with a rated current of 2.8 A, resulting in a total power rating of 56 VA. This component utilizes chassis mounting style with screw-type termination for secure installation. The physical dimensions are 71.4 mm in length, 36.3 mm in width, and 42.8 mm in height. It operates at standard 50/60 Hz frequencies and is constructed with a split bobbin design to ensure electrical isolation between windings.

Feature Summary

• Dual primary winding capability for flexible 115V or 230V AC input selection
• Chassis mount construction with screw terminals for robust mechanical stability
• Laminated core design optimized for low power and critical height applications

Applications

• Industrial control panels requiring isolated power supply
• Equipment needing 20V AC secondary voltage for circuit operation
• Applications with strict height constraints due to compact profile

Procurement Notes

Verify the specific ordering suffix matches the required voltage and current ratings. Confirm that the chassis mounting style aligns with your enclosure design. Ensure the terminal type corresponds to your wiring method. Cross-reference the manufacturer part number against official distributor catalogs to avoid counterfeit components. Check for any recent product change notices affecting specifications.

Selection Notes

Choose this model when a 56 VA power rating is sufficient for the load. Select for environments where chassis mounting is preferred over PCB mounting. Consider the dual primary feature if the system requires compatibility with both 115V and 230V mains. Evaluate the physical dimensions against available space in the assembly. Verify that the 20V secondary output meets the downstream component requirements.

Part Context

This component belongs to the DP-241 series of laminated transformers from Signal Transformer. The series is characterized by its suitability for low power and critical height applications. Other models in the family vary primarily in power rating and secondary voltage configurations while maintaining similar mounting styles and core technologies.

Replacement Considerations

Direct substitutes within the same series include DP-241-5-10L for lower power needs. For higher capacity requirements, consider DP-241-7-56. Always verify pinout compatibility and physical footprint before swapping parts. Consult official datasheets for detailed electrical equivalence.