To provide a sequencer terminal block having a terminal connection surface on which a plurality of terminal connection portions, to which terminals can be respectively connected, are arrayed. The sequencer terminal block includes a band attachment portion formed to protrude in a first direction parallel to an array direction of the terminal connection portions. The band attachment portion includes two first legs formed to protrude in the first direction, and a first joining portion that joins ends of the first legs to each other. An area surrounded by an attachment-portion forming surface on which the band attachment portion is formed, the first legs, and the first joining portion becomes an insertion hole into which a banding band can be inserted.