High speed fuses
Best protection of sensitive semiconductors such as static relays, UPS systems, adjustable frequency drives and softstarters.
Industrial fuses, IEC
NH solid blade fuses, Neozed and Diazed fuses, cylindrical fuses as well as fuses according to BS88 for cable and motor protection.
North American fuses
Fuses and fuseholders according to North American standards, UL and CSA approved. The right type of fuses for export to North America.
Medium voltage fuses
A complete line of medium voltage fuses according to IEC/DIN/BS/ANSI standard.
Other fuses
Special fuses, electronic protection fuses, fork lift fuses for battery protection.
Surge protection
Protect sensitive electronics against transients and surges with surge protection from Cooper Bussmann.
Power distribution blocks
A cost effective alternative to busbar systems.
Fuses for protection of DC circuits
DC circuits put high demands on the protective device. The absence of natural voltage zero makes it considerable more difficult to interrupt faults, the fuse is in most cases the best solution.
It is recommended to use fuses that are tested for use in DC circuits. For some circuits, a standard AC fuse may work but it has to be verified against the circuit.
The most important parameters for proper sizing are information regarding current, prospective short circuit current and the time constant of the circuit, L/R, in ms. It may be difficult to obtain information regarding the time constant. Most DC circuits have a time constant of 10 ms, higher time constant is unusual and is mainly only found in traction systems.
Modern battery systems such as in electric vehicles impose new demands on the protective device, the batteries are sensitive and usually require a very fast protection.
Another rapidly growing application is fuses for photovoltaic systems protection. A clear trend is to aim higher voltages, close to 1000 VDC. We offer a complete range of fuses for protection of the whole process of converting solar energy into electricity.
