Ex(i) isolated analog outputs — what the specs mean for a hazardous-area loop
The Siemens 6ES7332-5RD00-0AB0 is a SIMATIC S7 SM 332 analog output module with four isolated current outputs for signals from the hazardous area, carrying ATEX [EEx ib] IIC and FM Class I, Division 2 approvals — meaning it can drive 4-20 mA loops into Zone 1 / Division 2 locations without a separate barrier, provided the external capacitance and inductance stay under 850 nF and 6.6 mH respectively. Each output delivers 0 to 20 mA or 4 to 20 mA into a load up to 500 Ω, with a no-load voltage of 14 V and short-circuit current limited to 70 mA — the loop power budget is tight, so the actuator impedance plus cable resistance must sum below that 500 Ω ceiling or the output compliance drops.
Lifecycle status — EOL, sourced through independent channels
For a BOM that requires the same 20-pin front connector footprint and Ex(i) isolation, the closest functional sibling is the 6ES7332-5RD00-0AB1 — but that is a different revision with potentially different firmware behavior; verify the GSD file and hardware catalog entry in your TIA Portal version before committing.
Panel fit and supply rails
The module occupies one S7-300 slot at 40 mm wide, 125 mm tall, 120 mm deep — standard form factor for the rack. It draws 80 mA from the 5 V backplane bus and up to 200 mA from the 24 V load supply L+ (without load), with a typical power loss of 4 W. A 20-pin front connector (not included) is required for field wiring.