1. 3SU1401-2BB60-1AA0 is a DIL contact block from Siemens.
2. It is a single-pole double-throw (SPDT) contact block. The contact arrangement is 1NO/1NC.
3. It is designed for use with Sirius 3SU starters and devices, including 3SB3 and 3SB5 contactors and 3SK, 3SK1, and 3SK2 safety contactors. It is rated for 10A, 400 VAC and 20A, 280 VAC.
4. It has a silver contact material, a green pushbutton operator, and can be used with screw fixing terminals.