most likely no.
հարազատ [harazad] is composed of հար [har] and զատ [zad].
հար [har] means close to, relative, as in հարևան [harevan] (neighbor), հարակից [harakist] (near by, surrounding).
զատ/զատել [zat]/[zatel] means to apart, to separate.
both, the prefix and the root are native armenian by my knowledge.
now, why/how they join to mean relative, i have no idea.