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E-T-A Power Relays

March 6, 2026
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E-T-A Power relays are reliable problem solvers when it comes to switching high currents. Particularly construction machinery, agricultural vehicles as well as buses and trucks, floor-borne vehicles and other special vehicles (e.g. fire brigades) often have connected large electrical loads. In these applications, power relays disconnect the entire on-board electrical system from the battery.

Depending on the application, E-T-A offers purely electro-mechanical relays, solid state relays and also a hybrid design consisting of an electro-mechanical switching system with an intelligent electronic control unit.

ETA Power Relays

Key Product Lines & Features

  • EPR10 Solid-State Relays: Designed for high continuous currents (up to 200A at 24VDC), requiring 80% less space than traditional alternatives and
    eliminating the need for separate heat sinks
  • HPR10 Hybrid Relays: Combine robust mechanical, bistable switching with intelligent electronic controls, enabling features like on/off delays and voltage
    monitoring
  • MPR10/MPR20 Mechanical Relays: Bistable (MPR10) or monostable (MPR20) relays designed for high current switching with low power consumption

Key Advantages

  • Efficiency: Very low holding current reduces power consumption.
  • Durability: High resistance to environmental factors (IP57 rated for some models).
  • Maintenance: Long service life with reduced maintenance costs due to solid-state technology.
  • Functionality: Options for built-in overcurrent, short-circuit, and thermal load protection.

Applications

  • Battery Management
  • Power Distribution
  • Circuit Protection in Harsh High-Load Environments

Enquiry Form: https://www.epreston.co.uk/contact/

Home Page: https://www.epreston.co.uk/epblog/

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