Why Choose the ETE MV50P2S1 50 VA Multi-Voltage Control Transformer?
The ETE MV50P2S1 is a 50 VA single-phase multi-voltage control transformer designed for industrial electrical installations requiring flexible primary voltage connections and selectable secondary output voltages. Part of the ETE MV multi-voltage transformer range, it features 20/0/380/420 V primary terminals and 0/55/110 V secondary terminals, allowing the selection of a nominal 55 V AC or 110 V AC output using the appropriate secondary tap.
Its multi-voltage arrangement makes the MV50P2S1 a practical solution for electrical panel builders, machinery manufacturers and maintenance engineers working with compatible industrial control systems. The transformer provides dedicated AC voltage transformation for control circuits, signalling equipment and other devices requiring a suitable 55 V AC or 110 V AC supply.
The transformer includes a 20 V primary adjustment tap, which provides an additional connection facility within the primary winding arrangement. The correct use of this adjustment tap and the required primary terminal connections must be confirmed with ETE before installation. The terminal markings alone should not be used to infer an unverified connection arrangement.
With Class E insulation, a specified 15% voltage regulation, dimensions of 75 × 65 × 88 mm and a weight of approximately 1 kg, the MV50P2S1 provides a compact control transformer option. The associated enclosure references are EPH 1 or EPN 1, allowing suitable enclosure arrangements to be identified for the application.
Key Advantages
- 50 VA rated capacity provides dedicated AC power for compatible low-power industrial control circuits.
- Multi-voltage primary arrangement incorporates 20/0/380/420 V terminals for applications requiring the manufacturer's specified connection configurations.
- Selectable 55 V AC or 110 V AC secondary output supports different control voltage requirements using the appropriate secondary tap.
- 20 V primary adjustment tap provides an additional connection facility, subject to confirmation of the correct wiring arrangement with ETE.
- Single-phase construction supports dedicated control voltage transformation.
- Compact dimensions of 75 × 65 × 88 mm assist with electrical panel space planning.
- Approximately 1 kg weight makes the transformer practical to accommodate within suitable control equipment assemblies.
- Class E insulation provides a defined thermal insulation classification.
- 15% specified voltage regulation provides useful information when assessing secondary voltage variation under changing load conditions.
- EPH 1 or EPN 1 enclosure references help identify associated enclosure options.
- Selectable secondary taps reduce the need for separate transformer models when either supported output voltage is required.
- Industrial control transformer design is suitable for integration into appropriately protected machinery and automation circuits.
Key Features
- ETE MV multi-voltage control transformer series.
- 50 VA rated apparent power.
- 0.05 kVA transformer capacity.
- Single-phase transformer configuration.
- Primary terminals: 20/0/380/420 V.
- Primary voltage connection positions: 380 V and 420 V markings, with a separate 20 V adjustment tap.
- Secondary terminals: 0/55/110 V.
- Selectable nominal secondary output: 55 V AC or 110 V AC.
- Secondary output selection: Appropriate 0/55 V or 0/110 V tap connection.
- 20 V primary adjustment facility: Connection details must be confirmed with ETE.
- Insulation class: E.
- Specified voltage regulation: 15%.
- Associated enclosure references: EPH 1 or EPN 1.
- Length: 75 mm.
- Width: 65 mm.
- Height: 88 mm.
- Weight: 1 kg.
- Suitable for appropriately designed industrial electrical installations requiring a low-power 55 V AC or 110 V AC control supply.
Flexible 55 V and 110 V AC Control Power for Industrial Applications
The ETE MV50P2S1 provides a flexible solution for industrial installations requiring selectable control voltages from a single transformer. Its 0/55/110 V secondary terminal arrangement allows an appropriately connected circuit to receive a nominal 55 V AC or 110 V AC supply. This can be useful when designing or maintaining machinery with different control voltage requirements.
The transformer's 50 VA rated capacity is suitable for compatible low-power control equipment, including selected relay coils, indication circuits and signalling devices. At the rated apparent power, the calculated secondary current is approximately 0.91 A at 55 V or 0.45 A at 110 V. These values are calculated from the transformer rating and nominal output voltages; they are not separately verified manufacturer current ratings. The 50 VA capacity is the overall transformer rating and must not be interpreted as 50 VA independently available from each tap at the same time.
The 20 V primary adjustment tap is an important feature of the MV50P2S1. Because its terminal arrangement includes 20/0/380/420 V markings, installers must follow the correct manufacturer-defined wiring configuration. Confirm the appropriate connections with ETE before energising the transformer, particularly where the adjustment tap is being considered. Incorrect primary connections can result in unsuitable secondary voltages or equipment damage.
The specified 15% voltage regulation is relevant when assessing output voltage variation between operating conditions. The actual secondary voltage can vary with supply voltage and connected load, so equipment with narrow operating voltage tolerances should be checked for compatibility. This is particularly important for low-power transformers supplying contactors, relays or electronic equipment with specific voltage requirements.
With its Class E insulation, compact dimensions and EPH 1 or EPN 1 enclosure references, the MV50P2S1 can be incorporated into suitably engineered electrical installations. Appropriate mounting, primary and secondary circuit protection, conductor sizing, ventilation and electrical clearances must be provided in accordance with the manufacturer's instructions and applicable installation requirements.
Typical Applications
- Industrial control circuits requiring a nominal 55 V AC supply.
- Industrial control circuits requiring a nominal 110 V AC supply.
- Electrical control panels with compatible 380 V or 420 V primary supply arrangements.
- Industrial machinery and OEM control equipment.
- Low-power relay and contactor control circuits with compatible AC coil voltages.
- Industrial signalling and indication equipment.
- Machinery electrical cabinets and control enclosures.
- Control transformer replacement and maintenance projects.
- Electrical panel building and automation system integration.
- Equipment requiring selectable 55 V or 110 V AC control power.
- Industrial process control equipment with suitable low-power AC loads.
- Control circuit upgrades requiring a compact 50 VA multi-voltage transformer.
