ETE MV300P1S3 Multi-Voltage Control Transformer 300VA 10/0/220/240V to 0/12V + 0/12V

Why Choose the ETE MV300P1S3 300 VA Control Transformer?

The ETE MV300P1S3 is a compact and reliable 300 VA single-phase control transformer designed to provide dependable low-voltage AC power for industrial control circuits, electrical panels and automation equipment. Part of the ETE MV multi-voltage control transformer series, it features selectable primary voltage connections and dual secondary windings, offering flexible voltage conversion for industrial machinery and electrical installations.

Manufactured by Eastern Transformers & Equipment (ETE), the MV300P1S3 features 10/0/220/240 V AC primary terminals and two independent 12 V AC secondary windings. These secondary windings can be connected in parallel to provide 12 V AC or in series to provide 24 V AC, making the transformer suitable for a variety of industrial control and auxiliary power applications. The 10 V primary adjustment tap provides an additional connection option, with the correct configuration to be confirmed with ETE before installation.

With a continuous apparent power rating of 300 VA, Class E insulation and 8% voltage regulation, the MV300P1S3 is engineered for dependable operation in industrial environments. Its compact 120 × 100 × 120 mm construction, IP20 touch-proof terminals and compatibility with EPH 3 or EPN 2 enclosures make it a practical choice for electrical panel builders, OEM manufacturers and industrial automation engineers.

Key Advantages

• 300 VA continuous power rating suitable for industrial control and auxiliary circuits.
• Multi-voltage primary design with 220 V AC and 240 V AC supply connections.
• 10 V primary adjustment tap for additional connection flexibility, subject to confirmation with ETE.
• Dual 12 V AC secondary windings allowing flexible series or parallel connections.
• 12 V AC parallel or 24 V AC series output for different control circuit requirements.
• Single-phase transformer construction designed for industrial electrical installations.
• Class E insulation with design in accordance with EN 61558-1.
• 8% voltage regulation for predictable transformer performance under load.
• IP20 touch-proof terminals for improved protection against accidental contact with live terminal parts.
• Class H varnish impregnation and core earth connection for robust industrial construction.
• Compact panel-mounted design suitable for machinery cabinets and electrical control panels.
• EPH 3 or EPN 2 enclosure compatibility for installations requiring a suitable protective housing.

Key Features

• ETE MV multi-voltage control transformer series.
• 300 VA rated apparent power for continuous operation.
• Single-phase primary supply.
• Primary terminals: 10/0/220/240 V AC.
• Primary supply connections: 220 V AC or 240 V AC.
• Primary adjustment tap: 10 V; connection details must be confirmed with ETE.
• Secondary terminals: 0/12 V + 0/12 V.
• Parallel secondary connection: 12 V AC output.
• Series secondary connection: 24 V AC output.
• Supply frequency: 50/60 Hz.
• Insulation class: E.
• Voltage regulation: 8%.
• Terminal protection: IP20 touch-proof terminals.
• Class H varnish impregnation with core earth connection.
• Ambient operating temperature: −10 to +35 °C.
• Enclosure references: EPH 3 or EPN 2.
• Panel / chassis mounting for industrial electrical installations.

Reliable 12 V and 24 V AC Power for Industrial Control Systems

The ETE MV300P1S3 control transformer uses electromagnetic induction to convert a higher single-phase AC supply voltage into a lower AC voltage suitable for industrial control and auxiliary equipment. Its multi-voltage primary winding incorporates connections for 220 V AC and 240 V AC supplies, helping electrical engineers select the appropriate input connection for their installation.

The transformer also includes a 10 V primary adjustment tap, identified in the terminal arrangement as 10/0/220/240 V. This adjustment connection must not be treated as an independent 10 V supply input. The correct terminal configuration and intended use of the adjustment tap should be confirmed with ETE before wiring or energising the transformer.

The MV300P1S3 incorporates two independent 12 V AC secondary windings that can be configured according to the application. Connecting the windings in parallel with matching polarity provides a nominal 12 V AC output with a calculated total rated current of 25 A. Connecting the windings in series with the correct polarity provides a nominal 24 V AC output with a calculated rated current of 12.5 A. Both arrangements retain the transformer's total 300 VA apparent power rating.

With Class E insulation, Class H varnish impregnation and IP20 touch-proof terminals, the MV300P1S3 is designed for dependable service in industrial electrical installations. Its compact construction supports straightforward integration into machinery cabinets and control panels, while the specified EPH 3 and EPN 2 enclosures provide compatible housing options. Primary tap selection, secondary winding connections, earthing and circuit protection must follow the manufacturer's installation instructions.

Typical Applications

• Industrial electrical control panels and machinery cabinets.
• Control circuits requiring 12 V AC or 24 V AC.
• Industrial contactor, relay and solenoid control systems.
• Low-voltage AC auxiliary power supplies.
• Industrial automation and OEM machinery.
• Manufacturing and production equipment.
• Conveyor and material handling control systems.
• Motor starter and industrial switching circuits.
• Building services and HVAC control equipment.
• Industrial maintenance and replacement transformer installations.
• Electrical panel building and machine manufacturing projects.