10kA RCBOs for Higher Fault Level Installations
10kA RCBOs combine overload, short circuit, and residual current protection in one device, with a higher breaking capacity than standard 6kA models. They are typically used where the installation has a higher prospective fault current and a stronger-duty RCBO is needed for the board design.
This range includes Type A 10kA RCBOs in multiple current ratings and curve types, making them suitable for commercial boards, specialist domestic installs, and modern circuits where both residual current protection and higher short-circuit performance matter.
Quick answer: A 10kA RCBO is used when the circuit needs combined MCB and RCD protection with a 10kA breaking capacity, typically in installations where fault levels are too high for a lower-rated device to be the right fit.
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The main difference between a 6kA and 10kA RCBO is the amount of fault current the device can safely interrupt. That makes 10kA devices a common choice for more demanding board layouts, higher fault level environments, and installations where the design calls for extra short-circuit performance.
- 10kA breaking capacity – for installations with higher prospective fault current
- Type A residual current detection – suitable for AC and pulsating DC residual current
- B & C curve options – to suit different load and inrush conditions
- Suitable for commercial and specialist circuits – where a stronger-duty RCBO is needed
- Available in multiple ratings – covering a wide range of final circuit requirements
Looking for related RCBO options? Browse our Type A RCBOs, high immunity RCBOs, mini Type A RCBOs, or full RCBO range. For delivery and returns, see our delivery information and returns policy.
Type A RCBO – 50A C Curve, 30mA
£14.50
The WRT150C-030 is a 50A C Curve Type A RCBO designed for heavy-duty domestic and commercial circuits. It combines overcurrent and 30mA residual current protection in one slim 18mm device, with switched live and neutral disconnection for full isolation, bi-directional wiring for solar PV and...
Type A RCBO – 50A B Curve, 30mA
£14.50
The WRT150B-030 is a 50A B Curve Type A RCBO designed for high load domestic and commercial circuits. It combines overcurrent and 30mA residual current protection in a compact single-module device, with switched live and neutral disconnection for full isolation and bi-directional wiring for solar...
Type A RCBO – 40A B Curve, 30mA
£14.50
The WRT140B-030 is a 40A B Curve Type A RCBO that delivers overcurrent and 30mA residual current protection in one compact device. Featuring switched live and neutral disconnection for full circuit isolation, high immunity electronics to resist nuisance tripping, and bi-directional wiring for flexible use...
High Immunity Type A 4 Pole RCBO – ADR440C
£37.14
The ADR440C High Immunity Type A 4 Pole RCBO is a 40A protective device designed for three-phase circuits where both AC and smooth DC leakage currents may occur. With 30mA residual current protection, 6mA DC detection, and a 10kA short-circuit rating, it delivers reliable protection...
Why Choose a 10kA RCBO?
A 10kA RCBO is used where a circuit needs both residual current protection and a higher breaking capacity than a standard domestic device. In simple terms, the RCBO must be able to interrupt the fault current that could occur at the point where it is installed, which is why the correct kA rating matters.
What Does Breaking Capacity Mean?
The breaking capacity of an RCBO refers to the maximum fault current the device can safely interrupt. A 10kA RCBO can deal with a higher short-circuit current than a 6kA RCBO, which is why 10kA devices are commonly specified for more demanding installations.
6kA vs 10kA RCBOs
The difference between 6kA and 10kA RCBOs is not about the residual current function, but about the device’s short-circuit interruption capability. The right choice depends on the design of the installation and the prospective fault current at the board.
- 6kA RCBOs – often used in standard domestic consumer units
- 10kA RCBOs – typically used where fault levels are higher or the board specification requires it
Where 10kA RCBOs Are Commonly Used
- Commercial distribution boards – where a higher breaking capacity is often required
- Specialist domestic installs – where the fault level or board design calls for 10kA devices
- EV and heat pump related circuits – where the wider protective setup may require a higher-rated RCBO
- Three-phase or mixed-load environments – depending on the board arrangement and fault level
How to Choose the Right 10kA RCBO
- Breaking capacity – confirm whether the installation requires 10kA rather than 6kA
- Current rating – choose the correct amp rating for the protected circuit
- B or C curve – select based on the circuit’s expected inrush current
- Residual current type – confirm the device characteristic suits the connected load
- Board compatibility – ensure the RCBO is right for the enclosure or system being used
Featured 10kA RCBO Options
- Type A RCBO – 10kA Range – high breaking capacity RCBOs in multiple ratings and curve options.
- High Immunity RCBOs – useful where nuisance tripping is a concern on more sensitive circuits.
- Arc Fault Detection RCBO – combines AFDD and RCBO protection in a higher-spec device format.
10kA RCBOs vs Standard RCBOs
A 10kA RCBO performs the same core protection role as any other RCBO, but with a higher short-circuit breaking capacity. That makes it more suitable for installations where the fault level is beyond what a lower-rated device is intended to handle.
FAQs on 10kA RCBOs
What is the breaking capacity of an RCBO?
The breaking capacity is the maximum fault current the RCBO can safely interrupt. On this page, the devices are rated at 10kA.
What’s the difference between 6kA and 10kA RCBOs?
The difference is the short-circuit interruption capability. A 10kA RCBO can safely interrupt a higher fault current than a 6kA model.
When do I need a 10kA RCBO?
You need a 10kA RCBO when the installation design or prospective fault current means a lower-rated device would not be the correct choice.
Are these still Type A RCBOs?
Yes, this range is built around Type A RCBOs with a 10kA breaking capacity.
Why Buy 10kA RCBOs from Power & Data UK?
Power & Data UK supplies trade-focused circuit protection products with dependable UK stock, practical product choice, and fast dispatch. Orders over £30 qualify for free UK mainland next-day delivery, and products are backed by a 2-year manufacturer warranty. For unwanted items, see our returns policy.
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Not sure whether you need a 6kA or 10kA RCBO? Contact our team for help choosing the right device for the installation.