Why Choose the ETE WV300P7S7 300 VA Control Transformer?
The ETE WV300P7S7 is a reliable, continuously rated 300 VA single-phase control transformer designed to provide dependable low-voltage power for industrial control circuits, electrical panels and automation equipment. Part of the ETE WV wide-input-voltage transformer series, it features multiple primary voltage taps and two 24 V secondary windings, offering flexibility for industrial installations with different supply voltages.
Manufactured by Eastern Transformers & Equipment (ETE), the WV300P7S7 accepts selectable primary voltages of 380, 400, 420, 440, 460 and 480 V AC. Its dual secondary windings can be connected in parallel to provide 24 V AC or in series to provide 48 V AC, making it suitable for a wide range of control and auxiliary power applications.
With Class E insulation, 8% voltage regulation, IP20 touch-proof terminals and Class H varnish impregnation, this transformer is engineered for dependable operation in industrial environments. Its compact 120 × 100 × 120 mm construction and compatibility with EPH 3 or EPN 2 enclosures make it a practical choice for control panel builders, OEM manufacturers and electrical engineers.
Key Advantages
- 300 VA continuous power rating for industrial control and auxiliary circuits.
- Wide-input-voltage design with six selectable primary voltage taps from 380 to 480 V AC.
- Dual 24 V secondary windings allowing flexible series or parallel connections.
- 24 V AC parallel or 48 V AC series output for different control circuit requirements.
- Single-phase transformer construction suitable for industrial electrical installations.
- Class E insulation designed in accordance with EN 61558-1.
- IP20 touch-proof terminals for improved protection against accidental contact with live terminal parts.
- Class H varnish impregnation and core earth connection for robust construction.
- 8% voltage regulation for predictable transformer performance under load.
- Compact construction suitable for electrical control panels and machinery cabinets.
Key Features
- ETE WV wide-input-voltage control transformer series.
- 300 VA rated apparent power for continuous operation.
- Single-phase primary supply.
- Primary terminals: 0/380/400/420/440/460/480 V AC.
- Secondary terminals: 0/24 V + 0/24 V.
- Parallel secondary connection: 24 V AC output.
- Series secondary connection: 48 V AC output.
- Supply frequency: 50/60 Hz.
- Insulation class: E.
- Voltage regulation: 8%.
- Terminal protection: IP20 touch-proof terminals.
- Class H varnish impregnation with core earth connection.
- Ambient operating temperature: −10 to +35 °C.
- Enclosure references: EPH 3 or EPN 2.
- Designed for industrial control panel and electrical equipment installations.
The ETE WV300P7S7 control transformer uses electromagnetic induction to convert a selected higher AC supply voltage into a lower AC voltage suitable for industrial control equipment. Its multiple primary taps allow the appropriate terminal to be selected for the available supply, helping provide the intended secondary voltage without requiring separate transformer models for each supported primary voltage.
The transformer incorporates two independent 24 V AC secondary windings that can be configured according to the application. Connecting the windings in parallel provides a nominal 24 V AC output with a combined rated current capacity of 12.5 A. Connecting them in series with the correct polarity provides a nominal 48 V AC output rated at 6.25 A. Both configurations retain the transformer's total 300 VA rating.
The WV300P7S7 is particularly suitable for industrial installations where reliable AC control voltage is required for contactors, relays, solenoids and other compatible electrical devices. Its Class E insulation system, protective terminal arrangement and robust construction support long-term use within appropriately designed industrial control assemblies. Primary tap selection, secondary connections and protective devices must be installed in accordance with the manufacturer's instructions.
Typical Applications
- Industrial electrical control panels and distribution cabinets.
- Machine control circuits requiring 24 V AC or 48 V AC.
- Contactor, relay and solenoid control systems.
- Industrial automation and OEM machinery.
- Manufacturing and production equipment.
- Conveyor and material handling control panels.
- Motor starter and industrial switching circuits.
- Building services and HVAC control systems.
- Industrial maintenance and replacement transformer installations.
- Electrical panel building and machine manufacturing projects.
