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ETE WV400P7S8 Wide Input Voltage Control Transformer 400VA 0/380/400/420/440/460/480V to 0/110/120V + 0/110/120V
ETE WV400P7S8 is a 400 VA single-phase wide-input-voltage control transformer with 380-480 V primary voltage taps, dual 0/110/120 V secondary windings configurable for 110/120 V parallel or 220/240 V series output, Class E insulation and 8% voltage regulation.
£70.20
Why Choose the ETE WV400P7S8 400 VA Wide-Input-Voltage Control Transformer?
The ETE WV400P7S8 is a versatile and reliable 400 VA single-phase wide-input-voltage control transformer designed to provide dependable AC voltage transformation for industrial control circuits, electrical panels and automation equipment. As part of the ETE WV wide-input-voltage control transformer series, it is suitable for electrical panel builders, OEM machinery manufacturers and industrial automation engineers requiring flexible control power distribution across multiple industrial supply voltages.
Featuring 0/380/400/420/440/460/480 V primary terminals, the WV400P7S8 accommodates six nominal primary supply voltages through dedicated winding taps. Its two 0/110/120 V secondary windings can be connected in parallel to provide 110 V or 120 V AC, or connected in series to provide 220 V or 240 V AC. This configurable secondary arrangement makes the transformer particularly useful for industrial installations requiring different control circuit operating voltages.
With a rated capacity of 400 VA (0.4 kVA), Class E insulation and 8% voltage regulation, the ETE WV400P7S8 provides a practical solution for industrial control power applications. Its dimensions of 120 × 108 × 120 mm and weight of 5.5 kg support integration into suitably designed electrical control panels. The specified enclosure references are EPH 3 or EPN 2.
Key Advantages
- 400 VA single-phase control transformer designed for industrial electrical and automation applications.
- Wide primary voltage selection from 380 V to 480 V AC using dedicated winding taps.
- Six primary voltage options provide compatibility with different nominal industrial supply voltages.
- Dual 0/110/120 V secondary windings allow flexible control power configurations.
- 110 V or 120 V AC parallel output suitable for compatible industrial control circuits.
- 220 V or 240 V AC series output supports equipment requiring higher control voltages.
- 400 VA rated capacity provides power for multiple control devices within the transformer's loading limits.
- 8% voltage regulation provides a defined performance characteristic for electrical system design.
- Class E insulation supports dependable operation within the specified thermal limits.
- Compact 120 × 108 × 120 mm construction supports installation in industrial electrical panels.
- EPH 3 or EPN 2 enclosure references provide flexibility when selecting a suitable enclosure.
- Multiple primary taps and configurable secondary windings help standardise transformer selection across compatible installations.
Key Features
- ETE WV wide-input-voltage control transformer series.
- 400 VA rated apparent power.
- Single-phase transformer construction.
- Primary terminal configuration: 0/380/400/420/440/460/480 V.
- Primary voltage selections: 380, 400, 420, 440, 460 or 480 V AC.
- Secondary winding 1: 0/110/120 V.
- Secondary winding 2: 0/110/120 V.
- Parallel secondary output: 110 V or 120 V AC.
- Series secondary output: 220 V or 240 V AC.
- Dual secondary winding arrangement for adaptable output voltage configurations.
- Voltage regulation: 8%.
- Insulation class: E.
- Overall length: 120 mm.
- Overall width: 108 mm.
- Overall height: 120 mm.
- Transformer weight: 5.5 kg.
- Enclosure references: EPH 3 or EPN 2.
- Designed for industrial control power applications requiring flexible primary and secondary voltage connections.
Reliable Multi-Voltage Control Power for Industrial Automation
Industrial control transformers convert an available AC supply voltage into a suitable secondary voltage for electrical control circuits and connected equipment. The ETE WV400P7S8 provides a flexible solution for installations using nominal primary voltages of 380, 400, 420, 440, 460 or 480 V AC. Selecting the appropriate primary terminal allows the transformer to be configured for the available industrial supply without requiring a different transformer model for each listed voltage.
The transformer's two 0/110/120 V secondary windings provide additional installation flexibility. When correctly connected in parallel, the windings supply a nominal 110 V or 120 V AC output, with the load shared between the two windings. Alternatively, connecting the windings in series provides a nominal 220 V or 240 V AC output. The total transformer rating remains 400 VA in either configuration. Parallel connections require matching voltage taps and correct winding polarity, while series connections must follow the manufacturer's approved terminal arrangement.
The specified 8% voltage regulation should be considered when selecting connected equipment, particularly where the secondary load varies during operation. Its Class E insulation, practical dimensions and EPH 3 or EPN 2 enclosure references support integration into appropriately designed industrial electrical installations. Correct primary tap selection, secondary wiring, overload protection and ventilation are important for dependable transformer operation.
Typical Applications
- Industrial electrical control panels and automation cabinets.
- 110 V AC industrial control circuits.
- 120 V AC control power applications.
- 220 V and 240 V AC control circuits using series-connected secondary windings.
- Industrial relays, contactors and control devices requiring AC supplies.
- Motor control panels and electrical machinery control circuits.
- Industrial signalling and indication systems.
- Factory automation and production machinery.
- OEM equipment requiring flexible primary voltage selection.
- Industrial process control equipment.
- Electrical panel building and control system integration.
- Replacement or upgrade projects requiring a compatible 400 VA multi-voltage control transformer.
Technical Specifications
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| Rated Power (VA) | 400 VA | |
|---|---|---|
| Primary Voltage | 0/380/400/420/440/460/480V | |
| Secondary Voltage | 0/110/120V + 0/110/120V | |
| Phase | Single Phase | |
| Manufacturer | ETE | |
| Series | WV Wide-Input-Voltage Control Transformers | |
| Model | WV400P7S8 | |
| Product type | Wide-input-voltage control transformer | |
| Transformer configuration | Single-phase | |
| Rated apparent power | 400 VA | |
| Rated capacity | 0.4 kVA | |
| Primary terminals | 0/380/400/420/440/460/480 V | |
| Primary voltage options | 380 / 400 / 420 / 440 / 460 / 480 V AC | |
| Secondary winding 1 | 0/110/120 V | |
| Secondary winding 2 | 0/110/120 V | |
| Secondary winding arrangement | Dual secondary windings | |
| Parallel secondary output | 110 / 120 V AC | |
| Series secondary output | 220 / 240 V AC | |
| Calculated secondary current at 110 V | Approximately 3.64 A in parallel configuration | |
| Calculated secondary current at 120 V | Approximately 3.33 A in parallel configuration | |
| Calculated secondary current at 220 V | Approximately 1.82 A in series configuration | |
| Calculated secondary current at 240 V | Approximately 1.67 A in series configuration | |
| Voltage regulation | 8% | |
| Insulation class | E | |
| Length | 120 mm | |
| Width | 108 mm | |
| Height | 120 mm | |
| Dimensions (L × W × H) | 120 × 108 × 120 mm | |
| Weight | 5.5 kg | |
| Enclosure reference | EPH 3 or EPN 2 | |
| Product range | ETE Stock Control Transformers | |
| Catalogue reference | ETE Stock Control Transformer Range, March 2026 |
Frequently Asked Questions
What is the ETE WV400P7S8 used for?
The ETE WV400P7S8 is a 400 VA single-phase wide-input-voltage control transformer used to provide 110 V, 120 V, 220 V or 240 V AC supplies for compatible industrial control circuits, electrical panels and automation equipment.
What is the power rating of the ETE WV400P7S8?
The transformer has a rated apparent power of 400 VA (0.4 kVA). This is the total transformer capacity and does not double when the two secondary windings are connected in parallel.
What primary input voltages does the WV400P7S8 support?
The transformer features 0/380/400/420/440/460/480 V primary terminals, providing dedicated connections for nominal 380, 400, 420, 440, 460 and 480 V AC supplies.
What secondary output voltages are available?
The WV400P7S8 has two 0/110/120 V secondary windings. These can be connected in parallel to provide 110 V or 120 V AC, or in series to provide 220 V or 240 V AC, using the correct winding connections.
Can the secondary windings be connected in parallel?
Yes. The two secondary windings can be connected in parallel to provide a nominal 110 V or 120 V AC output. Matching voltage taps and correct winding polarity are essential to prevent circulating currents and possible transformer damage.
Can the ETE WV400P7S8 provide a 240 V output?
Yes. By connecting the two 120 V secondary windings correctly in series, the transformer can provide a nominal 240 V AC output. Connecting the two 110 V windings in series provides a nominal 220 V AC output.
What secondary current can the transformer supply?
Based on its 400 VA rating, the calculated total secondary current is approximately 3.64 A at 110 V, 3.33 A at 120 V, 1.82 A at 220 V or 1.67 A at 240 V. These values are calculated from rated apparent power and nominal output voltage; actual loading must comply with the manufacturer's winding ratings and installation requirements.
What is the voltage regulation of the WV400P7S8?
The transformer has a specified 8% voltage regulation. This characteristic should be considered when designing control circuits and selecting equipment sensitive to variations in secondary supply voltage.
What insulation class does this transformer use?
The ETE WV400P7S8 uses Class E insulation, providing a defined thermal insulation classification for operation within the transformer's specified electrical and environmental limits.
What are the dimensions and weight of the ETE WV400P7S8?
The transformer measures 120 × 108 × 120 mm (L × W × H) and weighs 5.5 kg. These dimensions should be considered when planning panel space, mounting arrangements and wiring access.
Which enclosure is specified for the WV400P7S8?
The specified enclosure references are EPH 3 or EPN 2. Final enclosure selection should account for the installation environment, ventilation, electrical clearances and required degree of protection.
Is the ETE WV400P7S8 suitable for a 480 V industrial supply?
Yes. The transformer includes a dedicated 480 V primary terminal, allowing connection to a compatible nominal 480 V AC supply when correctly installed and protected.
Where should the ETE WV400P7S8 be installed?
The transformer is intended for integration into appropriately designed industrial electrical control panels, machinery cabinets and automation systems. Installation should provide suitable mounting, ventilation, earthing arrangements, electrical protection and access to the correct primary and secondary terminal connections.
Trusted by Industrial Panel Builders and Automation Engineers
ETE WV wide-input-voltage control transformers provide a versatile solution for industrial control power applications requiring flexible primary voltage selection and configurable secondary outputs. With six primary voltage taps, dual 110/120 V secondary windings and a robust 400 VA capacity, the WV400P7S8 is well suited to electrical panel builders, OEM machinery manufacturers and industrial automation engineers seeking dependable 110 V, 120 V, 220 V or 240 V AC control power.
