Why Choose the ETE MV300P2S2 300 VA Multi-Voltage Control Transformer?
The ETE MV300P2S2 is a 300 VA single-phase multi-voltage control transformer designed for industrial control panels, electrical machinery and automation systems. Part of the ETE MV Multi-Voltage Series, it features 20/0/380/420 V primary terminals and 10/0/220/240 V secondary terminals, providing flexible voltage tapping arrangements for industrial control power applications.
The MV300P2S2 is particularly useful where a higher-voltage industrial AC supply must be transformed to a lower-voltage control circuit supply. Its primary terminal arrangement includes nominal 380 V and 420 V connections, while its secondary winding includes 220 V and 240 V terminals. The precise input and output combinations must follow the manufacturer's approved connection diagram.
With a 300 VA rated capacity, Class E insulation and 8% voltage regulation, this transformer offers a practical solution for appropriately rated industrial control circuits. It measures 120 × 100 × 120 mm, weighs 4.7 kg and has specified enclosure references of EPH 3 or EPN 2.
Important installation note: The secondary terminal arrangement incorporates a 10 V adjustment tap. Confirm the exact terminal connections and intended adjustment method with ETE before installation or energisation.
Key Advantages
- 300 VA rated capacity: Provides apparent power for appropriately sized industrial control, switching and signalling circuits.
- Multi-voltage primary: Features 20/0/380/420 V terminals for manufacturer-specified industrial AC supply connections.
- Tapped secondary output: Features 10/0/220/240 V terminals for flexible control voltage configurations.
- Industrial voltage adaptation: Suitable for applications requiring lower-voltage control power from a higher-voltage AC source.
- 10 V adjustment tap: Provides an additional voltage adjustment connection, subject to manufacturer confirmation.
- 8% voltage regulation: Provides a defined regulation characteristic for control circuit design.
- Class E insulation: Offers a specified insulation classification for transformer operation.
- Flexible panel design: Multiple voltage terminals support different industrial equipment requirements.
- Compact construction: Measures 120 × 100 × 120 mm for integration into electrical cabinets.
- Defined product weight: Weighs 4.7 kg for mechanical mounting and panel design calculations.
- Enclosure options: Specified references EPH 3 or EPN 2.
- Industrial applications: Suitable for control panels, machinery and OEM electrical equipment.
Key Features
- ETE MV Multi-Voltage Series control transformer.
- 300 VA rated apparent power.
- Single-phase transformer configuration.
- 20/0/380/420 V primary terminal arrangement.
- 380 V and 420 V primary terminal markings.
- 10/0/220/240 V secondary terminal arrangement.
- 220 V and 240 V secondary terminal markings.
- Tapped output configuration according to the manufacturer's datasheet.
- 10 V adjustment tap requiring terminal connection confirmation with ETE.
- Class E insulation.
- 8% specified voltage regulation.
- 120 mm length.
- 100 mm width.
- 120 mm height.
- 4.7 kg weight.
- EPH 3 or EPN 2 enclosure references.
- Listed in the ETE Stock Control Transformer Range, March 2026.
Multi-Voltage Primary Connections for Industrial AC Supplies
The ETE MV300P2S2 incorporates a 20/0/380/420 V primary terminal arrangement, offering flexibility for industrial electrical installations requiring different primary voltage connections.
The presence of 380 V and 420 V terminal markings makes this transformer relevant to control panels and machinery using corresponding nominal AC supply arrangements. The additional 20 V terminal is part of the primary winding terminal configuration and must be interpreted using the manufacturer's approved connection information.
For correct operation, the selected primary terminals must correspond to the available supply and the required secondary output arrangement. The terminal markings should not be treated as a substitute for the manufacturer's wiring diagram.
Installation guidance: Verify the primary connection, supply voltage, circuit protection and associated secondary tapping arrangement before energising the transformer.
Tapped 220 V and 240 V AC Secondary Output
The MV300P2S2 features 10/0/220/240 V secondary terminals, providing a tapped output arrangement for industrial control power distribution.
The secondary terminals include nominal 220 V and 240 V connections, together with a 10 V adjustment terminal. The manufacturer's specification identifies the output arrangement as tapped output per datasheet, so the exact output voltage for each permitted primary and secondary connection combination must be established from ETE's wiring documentation.
220 V AC Secondary Connection
For a nominal 220 V AC secondary output, the transformer's 300 VA rating corresponds to a calculated output current of approximately 1.36 A, provided the full rated apparent power is available at the selected connection.
This nominal voltage is commonly used in appropriately rated industrial control circuits, including contactor coils, relay circuits and machinery control equipment.
240 V AC Secondary Connection
For a nominal 240 V AC secondary output, the 300 VA rating corresponds to a calculated output current of approximately 1.25 A, assuming the full rating applies to that connection.
Engineers should verify the permitted terminal configuration, connected load and control equipment voltage tolerances before selecting this output.
10 V Adjustment Tap
The additional 10 V terminal provides an adjustment feature within the transformer's tapped secondary arrangement. However, the exact wiring method cannot be determined reliably from the terminal markings alone.
Manufacturer confirmation required: Confirm the 10 V adjustment tap connections with ETE. Do not assume that the terminal may be added to or subtracted from other winding sections without an approved connection diagram.
8% Voltage Regulation and Control Circuit Selection
The MV300P2S2 has a specified 8% voltage regulation characteristic. Voltage regulation describes the change in transformer secondary voltage between different loading conditions under the applicable test conditions.
This characteristic is relevant when selecting industrial contactors, relays, control devices and other equipment sensitive to supply voltage variation. Engineers should account for the transformer's operating load, any switching inrush requirements and the acceptable voltage range of connected equipment.
The 300 VA rating represents apparent power rather than a guaranteed permissible load on every individual tap. The manufacturer's winding and terminal loading requirements must be observed.
Compact Construction and Installation Considerations
The ETE MV300P2S2 measures 120 mm in length, 100 mm in width and 120 mm in height, with a specified weight of 4.7 kg. These dimensions help electrical panel builders assess available installation space and mounting requirements.
The transformer features Class E insulation, and ETE specifies EPH 3 or EPN 2 as the corresponding enclosure references. Enclosure selection should consider the complete installation, including mechanical support, ventilation, accessibility and environmental conditions.
Appropriate primary and secondary circuit protection, conductor sizing, protective earthing and mounting arrangements should be incorporated into the electrical design. Installation and commissioning should be undertaken by suitably qualified personnel using the manufacturer's connection instructions.
Typical Applications
- Industrial electrical control panels.
- Machinery control systems requiring tapped AC control voltages.
- Industrial contactor and relay control circuits.
- Motor starter and motor control assemblies.
- Factory automation and production machinery.
- OEM machinery and electrical equipment manufacturing.
- Electrical control voltage adaptation.
- Industrial switching and signalling systems.
- Control cabinets requiring 220 V AC or 240 V AC secondary connections.
- Electrical panel building and system integration.
- Machinery refurbishment and transformer replacement projects.
- Applications requiring a 300 VA single-phase multi-voltage control transformer.
