MT0300B

Power Transformers Overview

The Siemens MT0300B is a Class MT control power transformer with a 300 VA rating. It features a single-phase design with primary voltage options of 240 V or 480 V and a secondary output of 24 V AC. The unit operates at 50/60 Hz frequencies and utilizes screw-type terminals for electrical connections. Designed for chassis mounting, it integrates finger-safe terminals to protect against electrical creepage between the terminals and the transformer body. The construction provides up to 30% greater terminal contact area to facilitate low-resistance connections.

Power Transformers Feature Summary

• Class MT robust design for industrial motor control applications
• Integrated finger-safe terminals for enhanced electrical safety
• Increased terminal contact area for reliable connectivity

Power Transformers Applications

• Motor control circuits
• Industrial control panels
• Machine tool power distribution

Power Transformers Procurement Notes

Verify that the required primary voltage configuration matches the specific installation supply, as the model supports both 240 V and 480 V inputs. Confirm that the chassis mounting dimensions accommodate the physical space constraints of the control panel. Ensure the load does not exceed the 300 VA rating to maintain operational integrity and thermal performance within specified limits.

Power Transformers Selection Notes

Select this component when a dedicated 24 V AC control source is required from standard 240 V or 480 V industrial power lines. The Class MT designation indicates compliance with specific safety standards for control transformers. Consider the physical size and weight if space optimization is critical, as chassis-mounted units require adequate clearance for ventilation and maintenance access during installation.

Power Transformers Part Context

This transformer belongs to Siemens' Class MT series, which are engineered specifically for control power applications in industrial environments. These units provide isolation and voltage transformation to power control devices such as relays, contactors, and PLC I/O modules. The series is characterized by standardized ratings and robust construction suitable for demanding factory automation settings.

Power Transformers Replacement Considerations

Consult official Siemens documentation for direct cross-reference part numbers. Verify compatibility regarding mounting style, terminal type, and electrical specifications before substituting.