What the 10 A rating means for your control circuit
The 3RH2911-2GA04-ZW96 is a SIRIUS contactor relay carrying a rated current of 10 A at 24 V. That 10 A figure is the thermal current — the continuous current the contacts can carry at the rated insulation voltage. For AC-15 inductive loads (solenoids, contactor coils), the switching current drops with voltage: 6 A at 230 V, 3 A at 400 V, 1 A at 690 V. So the 10 A headline applies at low-voltage control levels; at line voltage the contact rating is lower, and the AC-15 column is the one to size against.
Mounting and wiring — snap-on DIN rail, spring terminals
Snap-on mounting to a DIN rail — the 36 mm width and 47.7 mm depth fit a standard enclosure footprint. The auxiliary and control circuit connections use spring-loaded terminals, accepting 2x (0.5... 2.5 mm²) without core end processing or 2x (0.5... 1.5 mm²) with ferrules. AWG 20–14. No screw torque to check; the spring clamp holds the conductor against vibration.
Contact configuration and service life
Four normally-closed (NC) auxiliary contacts, designated 51/52, 61/62, 71/72, 81/82. The contact reliability is rated at one faulty switching per 100 million operations at 17 V, 1 mA — suitable for low-level signal switching in PLC feedback circuits. Mechanical service life is 10 million switching cycles typical. The leading and lagging switching contacts are both listed as 0, meaning no built-in time delay between contact sets.
Insulation coordination and environmental limits
Rated insulation voltage 690 V AC at pollution degree 3. Surge voltage resistance 6 kV. IP20 protection on the front — touch-safe for the panel interior but not washdown-rated. Operating temperature range -25 to +60 °C; storage -55 to +80 °C. The 6 kV surge rating means it coordinates with standard 400 V distribution panels without additional surge suppression on the control circuit.