Abstract: “REINFORCEMENT ASSEMBLY FOR BANKNOTE DISPENSERS ON AUTOMATIC TELLER MACHINES”, wherein it reinforces the banknote dispenser for ATM and Cash Dispenser equipment units using a protection system including carbon steel plates comprised of four pieces for assembling the protection system against direct impact attacks and use of explosives on the machine. This protection is fixed through welding, where no physical alteration is needed on the cassette module or on the ATM safe in order to install the protection device. This installation may be performed on the field by a properly trained and equipped technician. The protection system has already been tested and resisted to direct impact tests for a considerable period of time; on a real scenario, the sheer amount of time taken to gain access to the banknote is a strong enough reason for giving up on the theft, which shows the security device is successfully approved.