Product Overview
The Siemens 3RA1924-2B is a mechanical interlock module from the SIRIUS series, specifically designed for use with reversing starters to ensure safe and reliable motor operation. This side-mounted module mechanically prevents the simultaneous engagement of forward and reverse contactors, thereby eliminating the risk of phase-to-phase short circuits. Each side of the module includes one normally closed (NC) auxiliary contact, which can be used for electrical interlocks or status feedback in the control circuit, further enhancing safety with a “break-before-make” logic. Compatible with S0, S2, and S3 size contactors, this module offers a standardized and modular solution for various reversing motor control applications, such as conveyor belts, lifting platforms, and pumps. While this model is being phased out, it remains a robust solution for existing systems, with replacements available in the newer 3RA2 series.
Specifications
| Parameter: Value | Parameter: Value |
| Model: 3RA1924-2B | Manufacturer: Siemens SIRIUS |
| Compatibility: S0/S2/S3 Contactors (side-mounted on reversing starter) | Auxiliary Contacts: 1 NC per side |
| Mounting Type: Side-mounted | Net Weight: 0.065 kg (estimated) |
| Lifecycle: Being phased out (replaced by 3RA2 series) |
Note: The information above is based on publicly available data and typical specifications for the SIRIUS series. Precise specifications may vary with different configurations. Estimated weight is based on publicly available data; for exact values, please consult official Siemens documentation.
Related SIRIUS Motor Control Components
| 3RT2025-1BB41 (Contactor S0) | 3RT2035-1BB41 (Contactor S2) | 3RT2045-1BB41 (Contactor S3) | 3RA2921-1DA00 (Wiring Module) |
| 3RA2934-2B (Replacement module) | 3RV2031-4PA10 (Breaker S2) | 3RV2041-4PA10 (Breaker S3) |
Note: The list above includes only a portion of the SIRIUS motor control components currently available for sale from Goldrayline. For specific model availability or detailed specifications for these or other Siemens components, please contact our sales team for comprehensive support.
