| Order Code (Model) |
3RH2911-1HA11 |
| Product Portfolio |
SIRIUS Modular Electrical Control Infrastructure |
| Contact Layout Configuration |
1 Normally Open (1NO) + 1 Normally Closed (1NC) |
| Mounting Implementation |
Front Plate Snap-On Clip Placement (Toolless Mounting) |
| Physical Terminal Interface |
Heavy-Duty Rigid Screw Clamp Connections Matrix |
| Hardware Compatibility |
SIRIUS 3RT2 Contactors & 3RH2 Relays (Size S00 to S3) |
| Insulation Rated Voltage |
690 V AC Rated Circuit Boundary Standards |
| Mechanical Operation Life |
Up to 10 Million Reliable Operational Switching Cycles |
Performance Overview
The Siemens 3RH2911-1HA11 is an industrial-tier premium standard auxiliary switch extension block meticulously engineered within the flagship SIRIUS low-voltage modular control hardware network. Purpose-built to seamlessly expand auxiliary terminal signaling loops and logical electrical locks for primary power contactors, this highly durable add-on component manages 1NO and 1NC contact points fluidly. The optimized frontal latch structure enables quick, direct snap integration onto standard 3RT2 power contactors or 3RH2 control relays across multiple frame boundaries without taking up extra lateral panel tracks. Complete with premium screw clamp wiring terminal channels and high-grade electrical contact plating parameters, it sustains critical plant grid distributions with absolute operational consistency.
📋 Critical Application Check
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Industry: Centralized Motor Control Enclosures (MCC), Industrial Water Treatment Switcheboards, Heavy Automation Assembly Line Interlocking, Remote Indicator Feedbacks.
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Front-Mount Space Efficiency: Direct frontal placement overrides the need for side expansion blocks, conserving essential horizontal spacing inside dense electrical distribution cabinet grids.
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Gas-Tight Screw Clamp Advantage: Robust mechanical screw channels lock heavy wiring cores reliably, resisting intense machinery resonance patterns and thermal expansions seamlessly.
Siemens SIRIUS Control Systems Integration:
