Better World
Siemens SIRIUS 3RV MCB, 3P, 20A, 20 → 690V AC, 4 Breaking Capacity
- RS Stock No.:
- 156-511
- Mfr. Part No.:
- 3RV2421-4BA10-0BA0
- Brand:
- Siemens
Subtotal (1 unit)*
£109.79
(exc. VAT)
£131.75
(inc. VAT)
FREE delivery for orders over £50.00
In Stock
- Plus 2 unit(s) shipping from 27 October 2025
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit |
|---|---|
| 1 + | £109.79 |
*price indicative
Better World
Our Better World range features products that make it easy for you to make a greener product choice you can trust. Click here to find out more.
- RS Stock No.:
- 156-511
- Mfr. Part No.:
- 3RV2421-4BA10-0BA0
- Brand:
- Siemens
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | Siemens | |
| Number of Poles | 3 | |
| Current Rating | 20A | |
| Rated AC Voltage | 20 → 690V | |
| Breaking Capacity at Maximum Voltage Rating | 4 | |
| Range | SIRIUS | |
| Series | 3RV | |
| Better World Claim | Extended product life, Low carbon manufacture | |
| Better World Product | Yes | |
Select all | ||
|---|---|---|
Brand Siemens | ||
Number of Poles 3 | ||
Current Rating 20A | ||
Rated AC Voltage 20 → 690V | ||
Breaking Capacity at Maximum Voltage Rating 4 | ||
Range SIRIUS | ||
Series 3RV | ||
Better World Claim Extended product life, Low carbon manufacture | ||
Better World Product Yes | ||
- COO (Country of Origin):
- DE
The Siemens Circuit Breaker is an essential component for transformer protection, designed to operate efficiently within an ambient temperature range from -50 °C to +60 °C. Featuring a robust design for high reliability, it ensures continuous operation under various conditions. With an exceptional switching capacity, it is capable of handling substantial operational demands. The circuit breaker is tailored for easy installation on a standard DIN rail and allows for flexible mounting positions.
Optimized for transformer protection
Compact for versatile mounting
Enhanced thermal overload release
Secure mounting mechanism
High electrical endurance for frequent cycling
Advanced short circuit protection
High environmental resilience
Compact for versatile mounting
Enhanced thermal overload release
Secure mounting mechanism
High electrical endurance for frequent cycling
Advanced short circuit protection
High environmental resilience
Related links
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