The Arbra trade name Beethoven is famous throughout the mining and quarrying industry for quality and reliability. All exploders manufactured by Arbra are used to fire electric detonators which are used in series to initiate high explosive charges. The exploders may be used to fire a single detonator ie. Nonel system as well as a circuit of detonators connected in series. The exploder provides enough energy to start all the detonators before the circuit is broken by the explosion. Our exploders are available for detonators in the range 0-13amps in several different models.