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Description
3RV2921-5MSIRUS Radio Auxiliary and Signaling Switch for 3RV2 Signaling of on off and Overload or Short Circuit Power Supply 24 V DC SIRUS Radio Auxiliary and Signaling Switch Specifications Manufacturer: Siemens Series: SIRIUS 3RV29 Product Type: Auxiliary and signaling switch module Model Number: 3RV2921 5M Function & Application Used for status indication (ON OFF, trip, overload) Designed for use with 3RV2 motor protection circuit breakers Provides remote
SIRUS Radio Auxiliary and Signaling Switch for 3RV2 Signaling of on/off and Overload or Short Circuit Power Supply 24 V DC
SIRUS Radio Auxiliary and Signaling Switch
Specifications
- Manufacturer: Siemens
- Series: SIRIUS 3RV29
- Product Type: Auxiliary and signaling switch module
- Model Number: 3RV2921-5M
Function & Application
- Used for status indication (ON/OFF, trip, overload)
- Designed for use with 3RV2 motor protection circuit breakers
- Provides remote signaling of breaker status
Electrical Characteristics
- Control voltage: 24 V DC
- Contact type: 1 Form C (SPDT – NO/NC)
- Contact rating: 20 mA
- Rated insulation voltage: 30 V
- Impulse withstand voltage: 0.8 kV
- LED indicator: Yes (status indication included)
Mechanical Data
- Mounting type: Plug-in / DIN rail compatible
- Terminal type: Spring clamp terminals
- Protection class: IP20
- Net weight: ~0.07 kg
- Dimensions (H × W × D): 90 × 18 × 71 mm
Operating Conditions
- Ambient temperature: -20°C to +60°C
- Storage temperature: -40°C to +85°C
Standards
- IEC compliant
- CE certified
- cULus approved
Downloads
Additional Information
| Device | Auxiliary and Signaling Switch |
| Type | SIRUS | Radio | Auxiliary | Signaling | Switch |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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4.1 ★★★★★
Based on 26 reviews
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Product Reviews
★★★★★ 5
Useful and Handy !
Very useful
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 11, 2026
★★★★★ 1
Tray
Nice but way too small from what the picture showed
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Reviewed in the United States on January 25, 2026
★★★★★ 5
Soft and cute
Color: White Ice Set, Color: White Ice Set
I love the size, I have a 75% keyboard so I knew size wouldn’t be an issue. I love the color it matches my keyboard perfectly! It feels nice to rest my wrists on but I haven’t used it consistently just yet so I’ll update this if anything changes but it feels soft and nice. It’s thick and doesn’t sink in when pressure is applied. All round it’s great thus far!
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Reviewed in the United States on April 29, 2026
★★★★★ 5
low price and high quality
Color: Black
good marital and comfortable and good quality
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Reviewed in the United States on May 20, 2026
★★★★★ 4
Good wrist rest
Color: Black
Comfortable wrist rest. The gel is a relief, replacing one that was not as padded. This works great. I put a little strip of Velcro tape to affix it to my keyboard, works great.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 3, 2026