Overview
The Siemens MT0300A is a proven Class MT control power transformer designed for industrial control and general-purpose applications. With a 300VA power rating and dual primary voltage inputs (240/480V, 230/460V, 220/440V), this transformer delivers 120/115/110V secondary voltage across single-phase, 50/60Hz systems. The epoxy-insulated construction and IP20 enclosure rating ensure durability in industrial environments.
Key Features
- Multi-tap primary windings: 240/480V, 230/460V, and 220/440V inputs for flexible installation
- Multi-tap secondary: 120/115/110V outputs support various control voltage standards
- 300VA continuous power rating with 0.29A maximum secondary current
- Class 130°C insulation with 55°C temperature rise for reliable long-term operation
- Epoxy resin insulation and IP20 protection for industrial duty
- Open screw terminal connections for standard panel mounting
Technical Specifications
The MT0300A meets demanding industrial control requirements with proven performance across North American and international voltage standards. Its compact footprint and slotted mounting design simplify integration into existing control panels.
Typical Applications
- PLC and HMI power supplies in control cabinets
- Soft starter and drive control circuits
- Solenoid and contactor control coil supplies
- Instrumentation and sensor power conversion
- Industrial panel retrofit and expansion projects
Compatibility & Replacements
The Siemens MT0300A maintains design compatibility with earlier control transformer models in industrial automation systems. When replacing or upgrading transformers, verify primary voltage selection and load requirements match your control panel specifications. This 300VA Class MT transformer is a standard offering across industrial electrical distributors and integrates seamlessly with Siemens control components and third-party automation equipment.
