The Siemens 3RS7002-2AE00 is a SIRIUS single-range signal converter — it takes a 0 to 20 mA analog input and passes an isolated signal onward, with a rise time of 6 ms. It's the kind of module you spec into a control panel when you need to condition a current-loop transmitter signal before it hits the PLC analog card. Supply is 24 V AC/DC, consuming just 0.29 W, so it won't tax a 24 VDC power supply shared with other loop-powered devices. The input-to-output isolation is galvanic — that means ground loops between the field transmitter and the controller get broken, a common headache on long cable runs in industrial plants. The 0.8 to 1.1 adjustment range on the input (both at DC and at 50/60 Hz) gives you a fine-tune span for scaling the signal, which is useful when the transmitter's full-scale doesn't match the PLC's input range exactly.
The zero-clearance spacing (0 mm upwards, downwards, forwards, backwards, and at the side) means you can pack modules tight on the rail without worrying about air gaps for cooling. That's a real advantage when you're squeezing a dozen signal conditioners into a crowded enclosure. Terminals accept 20 to 14 AWG solid or stranded wire (1 x 20-14 AWG per connection), which is typical for signal wiring in a panel. The snap-on mounting and any-position orientation make it straightforward to retrofit into an existing layout without reworking the backplate.
The supply channel is standard Siemens distribution; no broker scavenging required. If you're freezing a BOM for a new panel design, this converter is a safe line-item that won't disappear mid-project.