What this terminal block is and where it fits
The Siemens 6ES7924-0BB10-0AA0 is an 8-channel terminal block from the SIMATIC S7-300 family, designed specifically for 2A digital output modules and featuring 2x5 multiplication terminals. It uses a 16-pole IDC connection for the cable and screw-type terminals for actuators and sensors, with no LED indication. The part carries an infeed function, meaning it can supply power to the downstream bus — a detail that matters when planning the power distribution in a rack.
Key ratings and what they mean for fit
Rated at 60 V and 1 A, this block handles the signal-level switching typical of S7-300 digital output channels — not power distribution. The 1 A rating per channel is the limit for the screw-terminal path; stay within it for the 2A digital output modules it's paired with. Wire range accepts 0.5 to 2.5 mm² stranded, with or without core-end processing, which covers standard control wiring in a panel. Mounts on both 35 mm and 15 mm DIN rail, so it fits the standard S7-300 profile rail as well as narrower sub-panels. The enclosure is 80 mm long, 68 mm wide, and 43.2 mm high with lowest-profile installation — a compact footprint that leaves room for adjacent I/O modules.