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Fusebox 10kA RCBO (for TPN Distribution Boards)

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Fusebox 10kA RCBO (for TPN Distribution Boards) - Curve B

Fusebox 10kA RCBO (for TPN Distribution Boards) - Curve B (8)

Fusebox 10kA RCBO (for TPN Distribution Boards) - Curve C

Fusebox 10kA RCBO (for TPN Distribution Boards) - Curve C (8)

Fusebox 30mA 10kA RCBO for Three Phase Distribution Boards - Curve B

FuseBox 6A 30mA Single Pole 10kA B Curve Type A RCBO

FuseBox 6A 30mA Single Pole 10kA B Curve Type A RCBO

16 In stock
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SKU: RTA100630B
£17.44 £20.93
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FuseBox 10A 30mA Single Pole 10kA B Curve Type A RCBO

FuseBox 10A 30mA Single Pole 10kA B Curve Type A RCBO

32 In stock
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SKU: RTA101030B
£17.44 £20.93
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FuseBox 16A 30mA Single Pole 10kA B Curve Type A RCBO

FuseBox 16A 30mA Single Pole 10kA B Curve Type A RCBO

12 In stock
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SKU: RTA101630B
£17.44 £20.93
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FuseBox 20A 30mA Single Pole 10kA B Curve Type A RCBO

FuseBox 20A 30mA Single Pole 10kA B Curve Type A RCBO

21 In stock
More Available within 2-3 Working Days*
SKU: RTA102030B
£17.44 £20.93
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FuseBox 20A 30mA Single Pole 10kA B Curve Type A RCBO

FuseBox 25A 30mA Single Pole 10kA B Curve Type A RCBO

15 In stock
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SKU: RTA102530B
£17.44 £20.93
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FuseBox 20A 30mA Single Pole 10kA B Curve Type A RCBO

FuseBox 32A 30mA Single Pole 10kA B Curve Type A RCBO

12 In stock
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SKU: RTA103230B
£17.44 £20.93
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FuseBox 40A 30mA Single Pole 10kA B Curve Type A RCBO

FuseBox 40A 30mA Single Pole 10kA B Curve Type A RCBO

15 In stock
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SKU: RTA104030B
£17.44 £20.93
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FuseBox 50A 30mA Single Pole 10kA B Curve Type A RCBO

FuseBox 50A 30mA Single Pole 10kA B Curve Type A RCBO

15 In stock
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SKU: RTA105030B
£17.44 £20.93
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Fusebox 30mA 10kA RCBO for Three Phase Distribution Boards - Curve c

FuseBox 10A 30mA Single Pole 10kA C Curve Type A RCBO

FuseBox 6A 30mA Single Pole 10kA C Curve Type A RCBO

19 In stock
More Available within 2-3 Working Days*
SKU: RTA100630C
£17.44 £20.93
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FuseBox 10A 30mA Single Pole 10kA C Curve Type A RCBO

FuseBox 10A 30mA Single Pole 10kA C Curve Type A RCBO

25 In stock
More Available within 2-3 Working Days*
SKU: RTA101030C
£17.44 £20.93
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FuseBox 10A 30mA Single Pole 10kA C Curve Type A RCBO

FuseBox 16A 30mA Single Pole 10kA C Curve Type A RCBO

15 In stock
More Available within 2-3 Working Days*
SKU: RTA101630C
£17.44 £20.93
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FuseBox 10A 30mA Single Pole 10kA C Curve Type A RCBO

FuseBox 20A 30mA Single Pole 10kA C Curve Type A RCBO

25 In stock
More Available within 2-3 Working Days*
SKU: RTA102030C
£17.44 £20.93
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FuseBox 10A 30mA Single Pole 10kA C Curve Type A RCBO

FuseBox 25A 30mA Single Pole 10kA C Curve Type A RCBO

15 In stock
More Available within 2-3 Working Days*
SKU: RTA102530C
£17.44 £20.93
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FuseBox 10A 30mA Single Pole 10kA C Curve Type A RCBO

FuseBox 32A 30mA Single Pole 10kA C Curve Type A RCBO

19 In stock
More Available within 2-3 Working Days*
SKU: RTA103230C
£17.44 £20.93
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FuseBox 10A 30mA Single Pole 10kA C Curve Type A RCBO

FuseBox 40A 30mA Single Pole 10kA C Curve Type A RCBO

15 In stock
More Available within 2-3 Working Days*
SKU: RTA104030C
£17.44 £20.93
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FuseBox 10A 30mA Single Pole 10kA C Curve Type A RCBO

FuseBox 50A 30mA Single Pole 10kA C Curve Type A RCBO

15 In stock
More Available within 2-3 Working Days*
SKU: RTA105030C
£17.44 £20.93
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Ideas & Inspiration

Get a head start on your projects with our handy ideas and inspiration posts, we have created some helpful guides to help you make the right decisions before buy. Stay current with the latest electrical tips on our blog.

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In the UK, electrical installations must adhere to the regulations outlined in BS 7671, which is the Wiring Regulations published by the Institution of Engineering and Technology (IET). When it comes to the selection of protective devices like RCBOs (Residual Current Circuit Breaker with Overcurrent Protection) for three-phase distribution boards, there are specific requirements and considerations.

The choice of an RCBO with a rating of 10kA is typically appropriate for most domestic and some commercial installations. However, the suitability of a 10kA RCBO depends on various factors including the specific application, the fault current level at the installation location, and the requirements of the installation itself.

Here are some key points to consider when selecting a 10kA RCBO for a three-phase distribution board in a UK electrical installation under BS 7671:

  1. Fault Current Level: Before selecting an RCBO, you should calculate or determine the prospective fault current at the installation site. The prospective fault current is the maximum current that could flow in the event of a fault, such as a short circuit. This information is crucial for selecting the appropriate breaking capacity (kA rating) of the RCBO. If the prospective fault current exceeds 10kA, you would need an RCBO with a higher breaking capacity.
  2. Type of Installation: The type of installation matters. For residential installations, a 10kA RCBO may be sufficient in many cases. However, for commercial or industrial installations with higher fault current levels, a higher-rated RCBO might be required.
  3. Load Analysis: Consider the total connected load on the distribution board. Ensure that the RCBO’s rated current (in amperes) is suitable for the loads connected to it.
  4. Coordination: In larger installations, it may be necessary to coordinate the settings of RCBOs with upstream protection devices (e.g., circuit breakers). This helps ensure that the RCBO closest to a fault operates before the upstream device, reducing the risk of nuisance tripping.
  5. Manufacturer Recommendations: Follow the manufacturer’s recommendations and guidelines for selecting RCBOs. Manufacturers often provide detailed technical data sheets that specify the suitable applications and settings for their products.
  6. Regulations Compliance: Always ensure that your installation complies with the latest edition of BS 7671 and any additional local regulations or standards.

Ultimately, the selection of an RCBO for a three-phase distribution board in the UK should be based on a careful assessment of the specific requirements and characteristics of the installation. If you are unsure or have any doubts, it is advisable to consult with a qualified electrical engineer or electrician who is familiar with the local regulations and can perform the necessary calculations and assessments to ensure safety and compliance.

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