Under the Sale of Goods Act, 1930, if buyer neglects or refuses to take delivery or pay for…

Section 38(2) applies the same test where "the buyer neglects or refuses to take delivery of or pay for one or more instalments": whether this repudiates the whole contract or is only a severable breach "is a question in each case depending on the terms of the contract and the circumstances of the case". It is not automatically one or the other.