Polybutylene terephthalate resin composition and pellet thereof

A polybutylene terephthalate resin composition comprising 0.01 to 5.0 parts by mass of a saturated fatty acid ester of polyglycerol represented by formula (I) below with respect to 100 parts by mass of a polybutylene terephthalate resin,

• wherein the amount of a hydroxide group included in the saturated fatty acid ester of polyglycerol has a hydroxide group value of less than 5, and
• an average metering time measured by the following evaluation method is no greater than 26 seconds:
• when a pellet of the polybutylene terephthalate resin composition is dried at 140° C. for 3 hours and then using the pellet after the drying, tabular molded products of 60 mm×50 mm×2 mm are continuously molded by an injection molding machine, an average metering time per one shot at the time of molding 100 shots from 21th shot to 120th shot from the molding initiation is measured,
• wherein every R1 is a behenyl group and n is an integer from 1 to 10.