3RH5921-1EA11
Siemens Auxiliary switch block, laterally 3RH5921-1EA11
Siemens
Siemens Auxiliary switch block, laterally 3RH5921-1EA11
Home > Low Voltage Controls > Contactor Accessories > Siemens 3RH5921-1EA11 Need Siemens 3RH5921-1EA11? Auxiliary switch block, laterally mounted, 2-p…
Specifications
| Brand | Siemens |
|---|---|
| Model Number | 3RH5921-1EA11 |
| Official Product Name | SIRIUS Auxiliary Switch Block, Lateral, 1 NO + 1 NC |
| Applicable System | SIRIUS motor contactors sizes S0 to S12 (3RT1 / 3RT2 / 3RT5 frames) |
| Product Type | Auxiliary switch block, laterally mounted, 2-pole |
| Equivalent Standard | EN 50005 contact designation; IEC 60947-4-1 (with contactor) |
| Product Status | Active accessory, available on request |
| Mounting position | Lateral (side-mounted), 10 mm width |
| Terminal type | Screw terminals |
| Contact designation | According to EN 50005 |
| Suitable contactor sizes | S0 to S12 |
| Rated insulation voltage Ui | 690 V (per distributor datasheet listing) |
| Rated operational current | Contact supplier for exact specifications |
| Weight | Contact supplier for exact specifications |
| Contact configuration | 1 NO + 1 NC |
Product Description
It adds one NO and one NC positively driven contact arranged per EN 50005, with screw terminals, and is used to extend the auxiliary contact capacity of motor contactors for interlocking, signaling and control circuit feedback. The laterally mounted design keeps the front face free for additional front-mounted blocks, which makes the 3RH5921 ideal for complex contactor combinations and reversing starters. We supply original Siemens SIRIUS accessories with fast worldwide delivery. The Siemens 3RH5921-1EA11 is a SIRIUS auxiliary switch block for lateral (side) mounting on SIRIUS power contactors of sizes S0 to S12.
Basic Product Information
- Contact designation per EN 50005 for unambiguous wiring diagrams
- Screw terminals, 10 mm module width for side mounting
- Suitable for SIRIUS contactors sizes S0 to S12
- Positively driven contacts suitable for safety-related feedback circuits
- Laterally mounted auxiliary switch block, 1 NO + 1 NC contacts
Technical Specifications
Version & Model Difference
The 3RH5921-1EA11 is the lateral 1 NO + 1 NC screw-terminal version. Front-mounted alternatives belong to the 3RH2911 family (e.g. 3RH2911-1FA22 with 2 NO + 2 NC on the front), and solid-state compatible versions for low-level signals carry other suffixes. Lateral blocks are preferred when the front of the contactor must remain free.
Application Scenarios
- Auxiliary contact extension on motor contactors for interlocking and signaling
- Feedback contacts in reversing starters and star-delta combinations
- Control circuit expansion in machine building and process panels
- On which contactors does this block fit?
- It is designed for lateral mounting on SIRIUS contactors of sizes S0 to S12, including the 3RT1, 3RT2 and 3RT5 frames. One or two blocks can be fitted depending on the contactor size.
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