ETE MV1500P1S1 1500 VA Multi-Voltage Control Transformer – 55 V / 110 V AC Output
The ETE MV1500P1S1 is a 1500 VA (1.5 kVA) single-phase multi-voltage industrial control transformer featuring a tapped primary winding and selectable 55 V AC or 110 V AC secondary output. Part of the ETE MV stock control transformer range, this model provides a higher-capacity AC control power solution for compatible industrial electrical panels, OEM machinery and automation systems.
The transformer features 10/0/220/240 V primary terminals and 0/55/110 V secondary terminals. Its tapped secondary winding allows the appropriate nominal output voltage to be selected for equipment requiring either 55 V AC or 110 V AC.
The MV1500P1S1 incorporates a 10 V primary adjustment tap. The precise function of this tap and its approved terminal connections must be confirmed with ETE before installation. The primary terminal markings alone must not be treated as a complete wiring diagram.
With a substantial 1500 VA apparent power rating, Class E insulation and 4% voltage regulation, the MV1500P1S1 is suitable for consideration in industrial control circuits with appropriately rated loads. Its dimensions are 150 × 151 × 145 mm, with a specified weight of 14.2 kg.
The transformer has an associated EPN 4 enclosure reference and is listed as MV1500P1S1 in the ETE Stock Control Transformer Range, March 2026.
Key Advantages
- High-capacity 1500 VA rating: Provides 1.5 kVA of rated apparent power for appropriately sized industrial control loads.
- Selectable secondary voltage: Nominal 55 V AC or 110 V AC output connections.
- Tapped primary winding: Features 10/0/220/240 V terminals.
- Primary adjustment facility: Includes a 10 V adjustment tap, with connections requiring confirmation from ETE.
- Tapped secondary winding: Features 0/55/110 V terminals.
- Flexible control voltage selection: Accommodates compatible 55 V AC or 110 V AC equipment.
- 4% voltage regulation: Provides the specified regulation characteristic for electrical design.
- Class E insulation: Specified insulation classification.
- Industrial control applications: Suitable for consideration in larger control panels and machinery assemblies.
- Defined mechanical dimensions: Measures 150 × 151 × 145 mm.
- Specified weight: 14.2 kg.
- Enclosure reference: EPN 4.
- Stock range identification: Listed in the March 2026 ETE stock control transformer range.
Key Features
- ETE MV multi-voltage control transformer series.
- 1500 VA (1.5 kVA) rated apparent power.
- Single-phase AC transformer configuration.
- 10/0/220/240 V primary terminal arrangement.
- 10 V primary adjustment tap.
- 0/55/110 V secondary terminal arrangement.
- 55 V AC secondary tap.
- 110 V AC secondary tap.
- Selectable tapped secondary output.
- Class E insulation system.
- 4% specified voltage regulation.
- 150 × 151 × 145 mm overall dimensions.
- 14.2 kg specified weight.
- EPN 4 enclosure reference.
- Part of the ETE stock control transformer range.
Understanding the Tapped Primary and 10 V Adjustment Connection
The ETE MV1500P1S1 has a tapped primary winding identified by the terminals 10/0/220/240 V. This arrangement provides primary voltage connection options that must be selected according to the manufacturer's approved wiring instructions.
The 10 V primary adjustment tap forms part of the primary winding arrangement. Its exact purpose and permissible terminal combinations must be confirmed with ETE before energising the transformer.
The 10 V marking must not be interpreted as evidence of an independently rated 10 V supply input. Equally, the presence of 220 V and 240 V terminal markings does not remove the need to verify the correct primary connections.
Electrical designers and installers should confirm the available supply voltage, intended primary terminal selection and expected secondary output against the ETE connection diagram. Incorrect primary wiring may result in unsuitable output voltage or transformer damage.
55 V AC and 110 V AC Secondary Output Options
The MV1500P1S1 features a tapped secondary winding identified by the terminals 0/55/110 V. This provides two nominal output voltage options for compatible industrial control equipment.
55 V AC Secondary Connection
The 55 V AC secondary tap allows the transformer to provide a nominal 55 V AC output for equipment designed to operate at that voltage.
This option may be appropriate for specialist industrial machinery, replacement applications and control circuits that specifically require a 55 V AC supply.
The permissible loading of the 55 V tap and its approved terminal connection should be verified against ETE's technical documentation.
110 V AC Secondary Connection
The 110 V AC secondary tap provides a nominal 110 V AC output for compatible industrial control systems, including appropriately rated contactors, relays and auxiliary control equipment.
The transformer's 1500 VA rating offers capacity for suitable connected loads, subject to the manufacturer's applicable terminal and winding ratings.
The 55 V and 110 V options are taps on the specified secondary winding, not two independent 1500 VA outputs. Any simultaneous use of multiple secondary taps must be confirmed with ETE, including permissible combined loading.
1500 VA Output Capacity and Calculated Secondary Current
The ETE MV1500P1S1 has a rated apparent power of 1500 VA (1.5 kVA). The current corresponding to a nominal secondary voltage can be calculated using:
Current (A) = Apparent power (VA) ÷ Secondary voltage (V)
Calculated Current at 55 V AC
For a nominal 55 V AC output:
1500 VA ÷ 55 V = approximately 27.27 A
This is the mathematical current corresponding to the complete 1500 VA rating at 55 V AC. It does not independently establish the manufacturer's permissible current rating for the 55 V tap.
Calculated Current at 110 V AC
For a nominal 110 V AC output:
1500 VA ÷ 110 V = approximately 13.64 A
This is the mathematical current corresponding to the complete 1500 VA rating at 110 V AC.
The overall 1500 VA rating must not be counted separately for each secondary tap. Engineers should verify permissible tap loading, connected equipment demand, starting and inrush requirements, and suitable circuit protection before installation.
What Does 4% Voltage Regulation Mean?
The ETE MV1500P1S1 has a specified 4% voltage regulation. Transformer voltage regulation describes the change in secondary voltage between no-load and rated-load conditions under defined conditions.
The actual secondary voltage may vary with the primary supply and connected load. The nominal 55 V AC and 110 V AC outputs should therefore not be interpreted as electronically stabilised voltages.
The 4% regulation characteristic should be considered when selecting the transformer for control equipment with defined operating voltage tolerances. It is not the same as a guaranteed ±4% output voltage tolerance.
Typical Applications
- Industrial electrical control panels requiring 55 V AC or 110 V AC.
- Larger OEM machinery control assemblies requiring a compatible 1.5 kVA transformer.
- Factory automation and industrial process control equipment.
- Electrical panel-building projects requiring a higher-capacity tapped secondary transformer.
- Compatible 110 V AC relay and contactor control circuits.
- Specialist machinery designed for 55 V AC control power.
- Industrial switching and auxiliary electrical assemblies.
- Packaging, manufacturing and processing machinery.
- Machine control cabinets requiring a dedicated AC control supply.
- Maintenance and replacement applications specifying a compatible 1500 VA multi-voltage transformer.
- Electrical systems requiring a selectable 55 V or 110 V secondary tap.
- Control panels where the 10 V primary adjustment tap is required and its connections have been confirmed with ETE.
Installation and Terminal Connection Considerations
Before installing the ETE MV1500P1S1, verify the available primary supply, intended secondary output voltage, connected apparent power and correct terminal connections.
Primary wiring: The 10/0/220/240 V terminal arrangement includes a 10 V adjustment tap. Confirm the correct primary connections with ETE before energising the transformer.
Secondary wiring: The 0/55/110 V terminals provide nominal 55 V AC or 110 V AC output options. Select the correct tap according to the manufacturer's approved wiring diagram and the connected equipment's voltage requirements.
Mechanical installation: The transformer weighs 14.2 kg. Its supporting structure, mounting arrangement and installation method should be appropriate for this weight and the intended operating environment.
Suitable primary and secondary circuit protection, conductor sizing, protective earthing where applicable, ventilation and secure mechanical mounting should be incorporated into the installation design.
The specified EPN 4 enclosure reference should be checked against the intended installation requirements. This reference alone does not establish an enclosure protection rating or confirm that an enclosure is included.
