Exploder features

Automatic firing is achieved by holding the key in the fire position until the detonator or NONEX Systems Ltd PBC fires. When the key is released any residual charge left in the  capacitor is discharged through a resistor. The exploder becomes automatically safe if the key is removed at any time. A neon indicator flashes to indicate that firing has taken place.

The table in spec sheet download below describes the recommended circuit  resistance which can be successfully fired with the Arbra Beethoven battery operated exploders. These figures assume bottom limits for the exploder and detonator manufacturers published figures for 99% firing success.

Battery operated PP3 size 9 volt  (battery included).

Warranty – All Arbra exploders are covered by a 12 months warranty.

Certificate – All ARBRA Exploders are supplied with a signed test certificate. 

MK 23 exploder
The MK23 exploder can fire a single detonator or NONEX Systems Ltd PBC, or a series of detonators / NONEX Systems Ltd PBC of up to 24 Ohms resistance, (for example a shot of up to 20 Nonex capsules wired in series).  

MK 30 exploder
The MK30 exploder can fire a single detonator or NONEX Systems Ltd PBC, or a series of detonators / NONEX Systems Ltd PBC of up to 80 Ohms resistance. (for example a shot of up to 70 Nonex capsules wired in series).

Accessories: Supplied with neck strap robust carrying case and one battery & signed test certificate..

Every Exploder, has been examined and tested by a qualified person of the Arbra company, in accordance with current regulations, on the date stated, and found to be in good working order and “fires” to the manufacturer’s specified rating and confirmed with accompanied certificate.

Select a product from the list below;