Power supply control device 2A of component supply device 1 of the second embodiment further includes: priority order control section 26 configured to determine priority order j in which the multiple tape feeders 10 are to perform the specified operation, and to set the tape feeders 10 instructed to perform the specified operation in an order based on the priority order j when instruction receiving section 23 has received multiple of the individual instructions at the same time or has received the all-at-once instruction, wherein consumption current acquiring section 21 is configured to acquire the operating consumption current Im(j) corresponding to a supposed operation state when the specified operation is being performed by the tape feeders 10 instructed to perform the operation, and to acquire the consumption current Inow corresponding to a current state of the other tape feeders 10, total consumption current calculating section 22 is configured to calculate the total consumption current Itot by adding together the operating consumption current Im(j) of the tape feeders 10 instructed to perform the operation, and the consumption current Inow corresponding to the current state of the other tape feeders 10, and operation controlling section 25 is configured to perform the specified operation of the tape feeders 10 instructed to perform the operation if the total consumption current Itot is equal to or less than the output current capacity Icap, and to not perform the specified operation of the tape feeders instructed to perform the operation if the total consumption current Itot exceeds the output current capacity Icap.