Marker carriers, snaps into the ZFKK 1,5 double-level spring-cage terminal block with MSTBV or ICV load contact, can be marked with UC-TM 5, UC-TMF 5, UCT-TM 5, UCT-TMF 5, ZB 5, or ZBF 5, gray, unlabeled, mounting type: plug in, lettering field size: 5 x 10.5 mm