Breacher Charges are powerful electronic explosive charges, similar to Melta Bombs, which are too bulky and cumbersome to easily throw like a grenade. A Breacher Charge is primarily employed to destroy armored emplacements and fortifications and to breach the hulls of enemy starships during void boarding actions.
Breacher Charges pose some risk to their user at close range, but are extremely destructive in skilled hands. These powerful weapons were primarily employed by Legion Breacher Siege Squads during the Great Crusade and Horus Heresy eras during the late 30th and early 31st Millennia.
Sources
- Imperial Armour - The Horus Heresy - Book One: Betrayal by Alan Bligh, pg. 234