R Series: main features

The features and the use of the best standard of materials assure the quality, reliability and safety of breter cam-switches, as confirmed by the approvals granted by the most important international test houes.

  • Use for breaking, changing-over, making and starting of circuits with inductive or resistive electric loads; rated loads from 16A up to 315A
  • High resistance to mechanical stress and to tracking, dimensional stability.
  • Double break silver alloy contacts
  • Screw terminals for cables with/without cable terminal, of easy identification
  • Special electrical schemes available on request
  • Wide range of attachments to obtain many versions
  • Quality and reliability for the highest safety of operation on control circuits
  • Convenience and pratical use
  • Compliance with international specifications
  • Ip degree of protection according to IEC 529, CEI 70-1
  • CEI/EN 60445 is the standard applies to the identifications and marking of terminals of electrical equipment

    On-off switch

    Two-position switches used to connect and disconnect any electrical supply. They are used in a variety of power switchig applications like manual control of direct on-line motors and isolation of motor branch circuits.

    Changeover switch

    Three-position switches used in power applications to change between alternate electrical supplies. Changeover switches are typically used to switch the power supply from the primary source to a stand-by generator or emergency supply in the event of a power outage.

    Step switch

    Multi-position switches used to connect a variety of loads to an electrical supply in a predeterminated logical sequence. A typical application would be temperature control of a heating oven or furnace.

    Reversing switch

    Three-position (Forward, Off, Reverse) switches used to manually control the direction of rotation of a motor. Operating the switch changes the wiring configutation to the motor to operate in the forward or reverse direction.

    Dahlander switch

    Three-position (1st speed, off, 2nd speed) switches used to select 2 different speeds of rotation of a motor. Operating the switch changes the wiring configutation and the number of poles of the motor (i.e. 4/2, 8/4, etc.)
    The second speed is always two times the first one.

    Star Delta switch (Wye-Delta)

    Three-position (Off, Wye, Delta) switches used to manually control the reduced voltage starting of a motor. Operating the switch changes the wiring configutation to the motor from a star configuration to a delta configuration once the person operating the controller determines the motor is up to speed.

    Ammeter switch

    Multi-position switches used to connect one or more phases of the electrical supply to an ammeter, so that the current in each phase can be displayed on the ammeter.

    Voltmeter switch

    Multi-position switches used to connect two lines of the electrical supply system to a voltmeter, so that the voltage between lines (phase-to-phase or phase-to-neutral) can be displayed on the voltmeter.