ETE MV250P2S2 Multi-Voltage Control Transformer 250VA 20/0/380/420V to 10/0/220/240V

Why Choose the ETE MV250P2S2 250 VA Multi-Voltage Control Transformer?

The ETE MV250P2S2 is a 250 VA single-phase multi-voltage control transformer designed for industrial electrical control panels, machinery and automation systems requiring flexible AC voltage transformation. Part of the ETE MV multi-voltage control transformer range, this model features 20/0/380/420 V primary terminals and 10/0/220/240 V secondary terminals, providing a tapped winding arrangement for applications requiring appropriately configured higher-voltage AC control supplies.

Unlike conventional fixed-output control transformers, the MV250P2S2 incorporates multiple primary and secondary terminal connections. Its primary winding includes terminals marked 380 V and 420 V, while the secondary winding includes terminals marked 220 V and 240 V, together with a 10 V adjustment tap. The exact output connection and adjustment tap arrangement must be established from the manufacturer's connection information rather than inferred from terminal markings alone.

With a rated apparent power of 250 VA, Class E insulation and 8% voltage regulation, the transformer offers a practical solution for industrial control circuits requiring voltage transformation between compatible AC supply and load arrangements. Its compact dimensions of 120 × 88 × 120 mm and weight of 3.9 kg support installation within suitably designed electrical cabinets.

The MV250P2S2 is listed in the ETE Stock Control Transformer Range, March 2026, with compatible enclosure references EPH 3 or EPN 2. It is particularly relevant to OEM machinery manufacturers, control panel builders and maintenance engineers specifying replacement or new-build industrial control transformers.

Key Advantages

• 250 VA rated capacity: Provides apparent power capacity for appropriately sized industrial AC control circuits.
• Multi-voltage primary arrangement: Features 20/0/380/420 V primary terminals for flexible supply connection selection.
• Tapped secondary winding: Incorporates 10/0/220/240 V secondary terminals for manufacturer-defined output configurations.
• Higher-voltage secondary connections: Provides secondary terminals marked 220 V and 240 V for compatible AC control applications.
• Adjustment tap provision: Includes a 10 V secondary adjustment terminal, with the exact connection method to be confirmed with ETE.
• Class E insulation: Provides a defined insulation classification for industrial transformer applications.
• 8% voltage regulation: Offers a specified regulation characteristic for assessing secondary voltage variation under load.
• Flexible control panel design: Supports applications where multiple terminal arrangements are required.
• Compact construction: Measures 120 × 88 × 120 mm for integration into industrial electrical cabinets.
• Practical installation weight: Weighs 3.9 kg.
• Enclosure compatibility: Specified for ETE EPH 3 or EPN 2 enclosure arrangements.
• Industrial application versatility: Suitable for compatible AC control circuits, relays, contactors and machine control equipment.
• Established product range: Listed in the ETE stock control transformer range, March 2026.

Key Features

• Manufacturer: ETE.
• Model: MV250P2S2.
• Product series: MV multi-voltage control transformers.
• Transformer type: Single-phase industrial control transformer.
• Rated apparent power: 250 VA.
• Primary terminal arrangement: 20/0/380/420 V.
• Primary voltage terminal markings: 380 V and 420 V.
• Secondary terminal arrangement: 10/0/220/240 V.
• Secondary voltage terminal markings: 220 V and 240 V.
• Secondary adjustment terminal: 10 V.
• Output configuration: Tapped output according to ETE's connection information.
• Connection precaution: Confirm the correct 10 V adjustment tap and other terminal connections with ETE.
• Calculated current equivalent at 220 V: Approximately 1.14 A, based on the total 250 VA rating.
• Calculated current equivalent at 240 V: Approximately 1.04 A, based on the total 250 VA rating.
• Insulation class: E.
• Voltage regulation: 8%.
• Dimensions: 120 × 88 × 120 mm.
• Weight: 3.9 kg.
• Compatible enclosure references: EPH 3 or EPN 2.

Flexible Tapped AC Control Power for Industrial Electrical Systems

The ETE MV250P2S2 is intended for industrial electrical installations requiring a transformer with multiple primary and secondary terminal options. Its 20/0/380/420 V primary winding and 10/0/220/240 V secondary winding provide a configuration suited to applications where the available industrial AC supply must be transformed to a compatible higher-voltage AC control circuit.

The primary terminals include markings for 380 V and 420 V, together with an additional 20 V terminal. These markings identify the available winding connections but do not, by themselves, establish every permissible supply voltage combination. The exact primary wiring arrangement should be confirmed using ETE's approved connection diagram before installation.

The secondary winding incorporates terminals marked 220 V and 240 V, together with a 10 V adjustment terminal. The manufacturer's specification describes the output as a tapped output, with the precise connection arrangement to be established from its technical documentation. The 10 V terminal should not be treated as an independent low-voltage output without confirmation of the winding configuration.

At the total rated apparent power of 250 VA, the theoretical current equivalents are approximately 1.14 A at 220 V and 1.04 A at 240 V. These values are calculated from apparent power divided by voltage; they are not independently verified current ratings for every terminal combination. The applicable winding and tap loading limits should be checked before finalising the connected load.

The specified 8% voltage regulation is relevant to industrial control circuits where the connected equipment must remain within its operating voltage tolerance as loading changes. Contactors, relays and other electromagnetic devices may draw greater apparent power during energisation than during normal operation. Designers should therefore assess both steady-state demand and simultaneous switching requirements.

With Class E insulation, dimensions of 120 × 88 × 120 mm and a weight of 3.9 kg, the MV250P2S2 is suitable for integration into appropriately designed industrial electrical cabinets. The specified EPH 3 or EPN 2 enclosure references provide compatible housing options where additional physical protection is required.

The MV250P2S2 is an AC transformer, not a regulated DC power supply. Correct primary and secondary terminal selection, suitable circuit protection, conductor sizing, mounting, ventilation and protective earthing where applicable should be considered during installation. All adjustment tap connections should be verified against ETE's approved technical information before the transformer is energised.

Typical Applications

• Industrial electrical control panels requiring tapped AC transformer outputs.
• Machinery control systems using compatible industrial primary voltage connections.
• OEM machinery and electrical panel manufacturing.
• Compatible 220 V AC and 240 V AC control circuits.
• Contactor and electromagnetic relay control systems.
• Motor starter panels and machine control equipment.
• Industrial signalling and indication circuits.
• Automation equipment requiring transformer-derived AC control power.
• Packaging machinery and conveyor control systems.
• Industrial process control installations.
• Electrical maintenance and refurbishment projects.
• Replacement of compatible 250 VA multi-voltage control transformers.