Contactor DC – C360 Marine approved

Marine & train approved DC contactor for demanding conditions. Built on the same platform as our popular C310 series. Approved by DNV/GL for marine applications and according to EN60077-2 for railway applications.

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    • Product information
    • Documentation
    • Questions & Answers

    Documentation

    Questions & Answers

    • What do NO and NC mean?

      NO = Normally Open, NC = Normally Closed. This describes the state of a contactor when the voltage in the system is off. Normally open (NO) is mostly used in electrical systems where, for safety reasons, you want to be sure that the contactor opens when the power is cut in the system in case of a power failure. Normally Closed (NC) is often used when you want to be sure that the contactor closes a circuit in the event of a voltage drop, such as a power failure. to drain the system of energy to earth.

      Read more about our DC contactors for both high and low voltage here.

    • What are bi- and monostable contactors?

      The contactor can either be controlled to one mode or both modes, for switching on or off. For example, a monostable controls the switch-on by coil, while the switch-off is controlled by a spring if the coil voltage is broken. A bistable controls both striking and breaking with the coil. A bistable contactor uses no energy to keep the contactor in the respective position.

      Read more about our contactors here.

    • What does ‘fail to safe’ mean?

      When an electromechanical component such as a contactor is exposed to a situation that causes it to fail, it does so safely. A contactor that has arc extinguishing in air will be able to break the current without damaging other components. In gas-filled and contactors with closed arcing chambers, there is a risk of large pressure differences occurring due to. heating, this can lead to explosions with uncontrolled consequences, e.g. current conductors can risk damaging surrounding components.

    • What is a contactor?

      A contactor is defined according to IEV ref 441-14-33 as a mechanical switching device with only one rest position, operated other than by hand, capable of switching on, conducting and breaking currents under normal circuit conditions including operational overload.

      In common parlance, this usually refers to an electromechanical contactor where the operation of switching on and off is done by means of an electrically driven coil. Simply put, the contactor is essentially a switch for electrical power in the same way that a relay is a switch for electrical signals or small loads.

      With electrification and higher voltages in systems, contactors capable of extinguishing the resulting arc are required to safely interrupt the current, even under load in an emergency. It is therefore important to have the right contactor for the purpose. Factors to consider when choosing a contactor are current, voltage, current direction, inductance, short-circuit current, etc. This is to ensure that the current is actually broken and does not lead to more catastrophic events such as fire or similar, read more about risks here. Please contact us for help in choosing a contactor for your system.

      See our range of contactors and contacts here

       

    • What is an Economizer?

      An economizer is an electronic circuit that regulates (PWM) the turn-on power and hold power of the coil. An economizer also regulates the stroke to reduce contact bounce. Reduced contact resistance results in a longer service life, especially for loaded strikes.

    • What is galvanic isolation?

      When breaking both + & and – in case of anomalies in the system.

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