Siemens SIRIUS Series Signal Switch for Use with 3RV2 Series, 90mm Length, 690 V

View all Motor Accessories

Subtotal (1 unit)*

£18.81

(exc. VAT)

£22.57

(inc. VAT)

Add to Basket
Select or type quantity
In Stock
  • Plus 29 unit(s) shipping from 27 October 2025
  • Plus 9 unit(s) shipping from 27 October 2025
  • Plus 999,999,970 unit(s) shipping from 19 November 2025
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units
Per unit
1 +£18.81

*price indicative

RS Stock No.:
706-1995
Mfr. Part No.:
3RV2921-1M
Brand:
Siemens
Find similar products by selecting one or more attributes.
Select all

Brand

Siemens

Accessory Type

Signal Switch

For Use With

3RV2 Series

Series

SIRIUS

Voltage Range

690 V

Current Rating

10 A

Length

90mm

Width

18mm

Depth

68mm

Dimensions

90 x 68 x 18 mm

COO (Country of Origin):
RO

Siemens SIRIUS Series Signal Switch, 10A Current Rating, 690V Voltage Range - 3RV2921-1M


This signal switch is designed for the 3RV2 Series and serves as an auxiliary switch for circuit breakers. With a compact design measuring 90mm in length, 68mm in depth, and 18mm in width, it is ideally suited for various electrical applications. The SIRIUS signal switch enhances circuit protection and control, ensuring safe operation within its specified parameters.

Features & Benefits


• Operates efficiently at a voltage of 690V
• Current rating of 10A for robust performance
• Incorporates 1 normally open (NO) and 1 normally closed (NC) contact
• IP20 protection class for dust ingress protection
• Suitable for ambient temperatures from -20°C to +60°C
• Lightweight design at only 0.096kg facilitates easy installation

Applications


• Used with 3RV2 Series circuit breakers for additional signalling
• Ideal for electrical panel setups requiring compact signalling solutions
• Utilised in automation controls where visibility on circuit status is needed

What electrical connections are suitable for the auxiliary contacts?


Screw-type terminals are used for the auxiliary circuit connections, accommodating solid or stranded conductors of 0.5 to 2.5mm².

How does this switch handle environmental conditions in operational scenarios?


It remains effective between ambient temperatures of -20°C and +60°C, ensuring reliable performance without failure in typical industrial environments.

What are the surge voltage resistance specifications?


The switch is rated for surge voltage resistance up to 6kV, making it resilient against transient voltage spikes.

How do the contact types on this switch contribute to its functionality?


The provision of both NO and NC contacts allows for versatile signalling options in various control circuits, enhancing operational flexibility.

Related links