A detonator is a device containing a detonating charge that is used to initiate an explosion reliably, at a specified time and as applicable in a prescribed sequence. A detonator is a small sensitive device used to provoke a larger, more powerful but relatively insensitive secondary explosive.

There are mainly three types of detonators primarily used in blasting operations. These are ELECTRIC DETONATORS,  NON-ELECTRIC DETONATORS  &  ORDINARY DETONATORS.

NON-ELECTRIC DETONATORS

A non-electric detonator is designed to initiate explosions without the use of electric wires. A non-electric detonators includes devices that use detonating cords, safety fuse or a combination of these. Non-Electric

ORDINARY DETONATORS  

Comprises of an aluminium shell filled with an explosive charge. It is initiated by safety fuse which is inserted in the open end of the ordinary detonator and held there by crimping it. The fire conveyed by safety fuse initiates the explosive charge inside the shell.