DC-Switch Disconnectors from Benedict interrupt the DC/AC-Inverter from the solar-panels. They feature an innovatively designed trigger latch mechanism. It is designed in such a way that there is no direct connection between the lever and the contact system. Since the switching speed therefore does not affect the switching performance, both are independent of the operator.

The required switching torque is low, only 1 Nm.

Benedict’s contactors for DC-switching, used as fire protection defeat devices, can switch off the photovoltaic installation with a remote-controlled fire brigade emergency-stop button.

They can be controlled via main fuses or by remote turning off the main switch. This interrupts the DC/AC-Inverter from the solar-panels and prevents the risk of electric shock.

• The possibility of serial or parallel wiring of the contacts increases the contact rating
• The construction of the contacts and the material selection prevent development of oxidation and inadmissible heating-up
• Switch disconnectors „LS“ ensure a reliable switching up to 85 A with 1500 V in the category DC21B (DC-PV1)
• The switching speed at the manually operated handle does not have an effect on the switching attitude of the contacts
• The compact design ensures resistance to vibrations
• Contact self-cleaning function
• High reliability of the attitude of the contacts

DC circuit breakers are not only protective devices for the solar PV systems, but also an important part of industries that require heavy inputs e.g., they involve machinery which can require plenty of energy and precision. One such example is Arc Welding.

In addition, they are crucial for the correct operation of LED lamps, electric vehicles and other DC electrical devices, e.g., for charging stations for electric vehicles, electric motors which require direct current, powering fuse boxes in both electric and gas cars, and much more.

The stations that supply DC power facilitate higher power charging of car batteries, which is why they are suitable for establishing a larger charging infrastructure both of EV charging points for business and public.