As a Requip user, Erza has many weapons and armors. Erza has stated that she is able to equip and wield over 200 swords at one time. She has also stated that she owns over 100 different types of armor.
List of Known Armors:
Heart Kreuz Armor: Made oleh jantung Kreuz, this is Erza's casual armor, which she is mostly seen wearing until it was modified. She sometimes only requips her swords, but doesn't change this armor.
Heavens Wheel Armor (天輪の鎧 Tenrin no Yoroi): This armor is used to face multiple opponents. Plated armor covers her chest, with a large metal bunga over it, and she wears...