Why Choose the ETE MV150P2S2 150 VA Multi-Voltage Control Transformer?
The ETE MV150P2S2 is a compact 150 VA single-phase multi-voltage control transformer designed for industrial electrical control panels, OEM machinery and automation systems requiring flexible AC voltage connections. Part of the ETE MV multi-voltage stock control transformer range, it features 20/0/380/420 V primary terminals and 10/0/220/240 V secondary terminals, allowing electrical designers to select the appropriate connections for compatible industrial control circuits.
Unlike a conventional fixed-voltage transformer, the MV150P2S2 incorporates a multi-tapped primary and secondary arrangement. Its primary terminal markings accommodate different supply configurations, while its secondary winding provides a tapped AC output that must be connected according to the manufacturer's datasheet.
The secondary terminal arrangement includes a 10 V adjustment tap. This is an important consideration when specifying or installing the transformer: the exact terminal connections must be confirmed with ETE, particularly when the adjustment tap is required. The markings alone should not be used to infer every available voltage combination.
With a rated apparent power of 150 VA, Class E insulation and 10% voltage regulation, the ETE MV150P2S2 provides a practical solution for compatible industrial control loads. It measures 96 × 76 × 103 mm and weighs 2.3 kg, making it suitable for electrical cabinets and machinery panels where available space must be considered.
The transformer is listed in the ETE Stock Control Transformer Range, March 2026, with specified enclosure references of EPH 2 or EPN 1.
Key Advantages
- Multi-voltage flexibility: Tapped primary and secondary arrangements support different compatible AC voltage configurations.
- 150 VA apparent power rating: Suitable for appropriately sized industrial control and auxiliary circuits.
- Multi-tapped primary: Features 20/0/380/420 V terminals.
- Multi-tapped secondary: Features 10/0/220/240 V terminals.
- Secondary adjustment facility: Includes a 10 V adjustment tap, with connections to be confirmed with ETE.
- Flexible panel design: Helps electrical designers accommodate different voltage requirements using a multi-voltage transformer.
- Class E insulation: Provides the specified insulation classification.
- 10% voltage regulation: Gives engineers a defined regulation characteristic for load assessment.
- Compact dimensions: Measures 96 × 76 × 103 mm.
- Manageable installation weight: Weighs 2.3 kg.
- Industrial applications: Suitable for compatible machinery control and auxiliary electrical circuits.
- Enclosure references: EPH 2 or EPN 1.
- Stock range identification: Listed under model MV150P2S2 in the March 2026 ETE price list.
Key Features
- ETE MV multi-voltage control transformer series.
- 150 VA rated apparent power.
- Single-phase AC transformer construction.
- 20/0/380/420 V primary terminal arrangement.
- 10/0/220/240 V secondary terminal arrangement.
- Tapped secondary output per ETE datasheet.
- 10 V secondary adjustment tap.
- Class E insulation.
- 10% specified voltage regulation.
- Compact 96 × 76 × 103 mm dimensions.
- 2.3 kg specified weight.
- EPH 2 or EPN 1 enclosure references.
- Suitable for consideration in industrial control panels and OEM machinery.
- Part of the ETE stock control transformer range.
The ETE MV150P2S2 uses a tapped primary winding arrangement identified by the terminals 20/0/380/420 V. This configuration is intended to accommodate compatible industrial AC supply arrangements, with the actual connection determined by the manufacturer's wiring diagram.
The secondary terminals are marked 10/0/220/240 V. Rather than specifying one fixed output connection, ETE identifies this model as having a tapped output per datasheet. The terminal arrangement offers flexibility, but the exact output voltage depends on the approved primary and secondary connections.
The 10 V adjustment tap requires particular attention. It should not automatically be interpreted as a standalone 10 V power output or assumed to provide a particular voltage correction without confirmation. The correct function, terminal combinations and connection sequence should be verified directly with ETE.
This multi-voltage arrangement can be valuable for electrical panel builders and OEM machinery manufacturers who need to accommodate differing supply or control voltage requirements. However, the transformer's flexibility does not eliminate the need for careful voltage selection and verification.
150 VA Output Capacity and Calculated Secondary Current
The MV150P2S2 has a rated apparent power of 150 VA. For a single-phase transformer, the relationship between apparent power, nominal voltage and current can be expressed as:
Current (A) = Apparent power (VA) ÷ Voltage (V)
For example, if the manufacturer's approved connection provides a nominal 220 V AC output, a 150 VA rating corresponds to a calculated current of approximately 0.68 A.
If the approved connection provides a nominal 240 V AC output, the corresponding calculated current is approximately 0.63 A.
These values are mathematical calculations for the stated nominal voltages. They do not independently establish the correct terminal connections, permissible current on every tap or the manufacturer's protection requirements.
When selecting the transformer, engineers should assess the combined apparent power of connected equipment, operating voltage tolerances and any short-duration starting or inrush demands. The specified 10% voltage regulation must also be considered because secondary voltage can change with loading conditions.
What Does 10% Voltage Regulation Mean?
The ETE MV150P2S2 has a specified 10% voltage regulation. Transformer voltage regulation describes the change in secondary voltage between no-load and rated-load conditions under defined test conditions.
This means the actual output voltage may differ from the nominal voltage as the connected load changes. For control equipment with a narrow operating voltage tolerance, the regulation characteristic should be considered alongside primary supply variation and the selected secondary connection.
Voltage regulation is not the same as automatic electronic voltage stabilisation. The MV150P2S2 is an AC transformer, and its output should not be assumed to remain perfectly constant under all operating conditions.
Typical Applications
- Industrial electrical control panels requiring a multi-voltage AC transformer.
- OEM machinery with configurable control voltage requirements.
- Electrical panel-building projects using tapped transformer connections.
- Factory automation and industrial process control equipment.
- Compatible AC relay and contactor control circuits.
- Industrial switching and auxiliary electrical assemblies.
- Packaging, manufacturing and processing machinery.
- Machinery control cabinets requiring flexible AC voltage selection.
- Electrical installations requiring a compatible tapped secondary output.
- Replacement applications specifying an ETE MV150P2S2 or an electrically compatible equivalent.
- Control systems where the 10 V adjustment tap is required and its connections have been confirmed with ETE.
- Compact electrical cabinets where transformer dimensions and weight are important.
Installation and Terminal Connection Considerations
Before installing the ETE MV150P2S2, confirm the available AC supply voltage, the required secondary voltage and the total connected load. The transformer must be connected using the correct primary and secondary terminals for the intended configuration.
Important connection note: The primary terminal markings 20/0/380/420 V and secondary terminal markings 10/0/220/240 V must be interpreted using the ETE wiring diagram. Confirm the 10 V adjustment tap connections directly with ETE before energising the transformer.
Suitable primary and secondary overcurrent protection, conductor sizing, protective earthing where required, ventilation and secure mechanical mounting should be considered as part of the installation design.
The specified EPH 2 or EPN 1 enclosure references should be checked against the installation requirements. The enclosure reference alone does not establish an environmental protection rating or confirm suitability for every installation location.
