Module at a glance — 16 relay outputs on the S7-1200 backplane
The Siemens 6AG1222-1HH30-4XB0 is a 16-channel relay output module for the S7-1200 system, rated for 2 A per channel across a wide voltage range, with an operating temperature from -40 to 70°C. Each relay output switches resistive or inductive loads up to 2 A, with AC loads from 5 to 250 V and DC loads from 5 to 30 V. Switching time is 10 ms max in either direction. No internal short-circuit protection — external fuses or breakers are required per channel or group. The module needs a front connector (sold separately). Diagnostic alarm is available for wire break or load voltage loss.
Sourcing and production status — actively produced, order to fill BOM lines
CE marked and FM approved. For compliance documentation such as RoHS or REACH, request directly from Siemens for the specific production date code.
Integration notes — power budget, wiring, and thermal derating
Typical power loss is 8.5 W. Maximum ambient temperature is 70 °C. Permissible temperature change is 5 °C to 55 °C at 3 °C per minute. Electrical isolation between channel groups (groups of 4) and the backplane is 750 V AC for 1 minute. The module is IP20 rated, requires front connector, and fits the standard S7-1200 footprint (45 mm wide, 100 mm high, 75 mm deep).