2 channels, 3 A per channel, 10 mm wide
The 6ES7122-1BB10-0AA0: Two solid-state digital outputs, each rated 3 A at 24 VDC up to 40 °C, derated to 2 A at 60 °C — the limiting factor is the thermal budget inside the compact 10 mm housing, not the output device itself. Switching frequency reaches 100 Hz on resistive loads; with inductive loads to IEC 60947-5-1 DC-13/AC-15, the rate drops to 0.2 Hz at 1 A and 0.1 Hz at 2 A — the flyback clamp limits inductive shutdown to typ. (L+) -48 V. Each channel has electronic short-circuit protection with a response threshold of 2.8 to 7.2 A, and the module occupies one slot in an S7-1200 rack (up to 8 slots per CPU).
DIN-rail footprint and wiring
Unshielded sensor cables can run up to 600 m; shielded runs extend to 1,000 m, which covers most machine-mounted or conveyor-line sensor drops without a repeater. The green status LED per channel confirms the output state at a glance; no diagnostics function or alarm reporting is available — this is a basic-output block for simple on/off control.
Isolation and channel separation
Channels are not isolated from each other, but optocoupler isolation separates the outputs from the backplane bus, tested at 1,500 V AC — adequate for grouping outputs on the same field supply within a control cabinet. Isolation between different circuits is rated at 75 V DC / 60 V AC, so mixing 24 VDC output groups with a separate 48 VDC supply on the same module is within spec as long as the voltage difference stays below that ceiling.
No official successor or pin-compatible alternative is listed — the 6ES7122-1BB10-0AA0 is the active order code for this 2-channel output variant.