KTH075

Power Transformers Overview

The Siemens KTH075 is a Control Power Transformer (CPT) kit designed for industrial automation applications. It features a primary voltage range of 208 to 120 V and provides a secondary output of 24 V. The unit has a power rating of 75 VA and operates at frequencies of 50/60 Hz. This component serves as a dedicated power supply solution for control circuits, ensuring stable voltage conversion from standard line voltages to low-voltage control levels required by PLCs, relays, and other control devices within automated systems.

Power Transformers Feature Summary

• Provides isolated 24 V control power from varying primary inputs
• Compact kit design for easy integration into control panels
• Supports standard 50/60 Hz industrial power frequencies

Power Transformers Applications

• Powering programmable logic controller (PLC) input/output modules
• Supplying control circuits for industrial relay logic systems
• Providing isolated power for safety-related control components

Power Transformers Procurement Notes

Verify the specific primary voltage requirement (208V vs 120V) against your existing infrastructure before procurement. Confirm that the 75 VA rating meets the total load of all connected control devices. Ensure compatibility with the installation environment regarding ambient temperature and mounting standards. Cross-reference the full part number US2:KTH075 to ensure correct regional certification compliance.

Power Transformers Selection Notes

Select this model when a dedicated, isolated 24 VAC source is required for sensitive control electronics. Consider the 75 VA capacity limit when calculating the total inrush and steady-state current of downstream components. Evaluate space constraints within the control cabinet, as this is a compact kit. Compare against solid-state alternatives if higher efficiency or smaller footprint is critical for the specific application.

Power Transformers Part Context

This component belongs to Siemens' industrial control power transformer lineup, specifically designed for DIN-rail or panel mounting in automation enclosures. It complements SIMATIC S7 series controllers and other discrete control hardware. The CPT technology ensures galvanic isolation between the power network and control circuitry, enhancing system reliability and noise immunity in electrically noisy industrial environments.

Power Transformers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify electrical specifications such as VA rating, primary/secondary voltages, and frequency response when evaluating generic replacements. Ensure any substitute meets the same insulation class and safety certifications required for the original installation.

Power Transformers FAQ

What is the secondary voltage output of the KTH075?

The secondary voltage output is 24 V.

Does the KTH075 support both 50 Hz and 60 Hz operation?

Yes, the transformer supports operation at both 50 Hz and 60 Hz frequencies.