According to Ahirbudhnyasaṃhita, a Pancaratra work with 60 chapters dealing with the powers of mantras and yantras, Raksha refers to the protection infused by radiant mantra power.

Raksha Plate is a copper sheet energized for 48/96 days and it becomes your personal protective shield to ward off evil eye, black magic, and the malefic effects of hostile forces and bestows a glowing radiance to one’s being. Sacred sounds known as Mool Mantra (Root Sound) are chanted to energize the Raksha plates and invoke Divine Archetypes, who, out of love and compassion, manifest in your life to protect, comfort, and provide for you.

Wearing this energized talisman encased in a copper amulet next to your skin will help counteract ill effects causing delays and obstacles and remove negative energy that prevents your progress in life.