High Immunity Type A Mini RCBO – 16A B Curve (WRB116B-030)

The WRB116B-030 High Immunity Type A Mini RCBO is a 16A B Curve device designed to protect small power and lighting circuits while saving space in the board. At just 18mm wide, it combines residual current and overcurrent protection in one compact module. With 30mA Type A sensitivity and high immunity design, it delivers reliable protection against AC and pulsating DC leakage currents in compliance with the 18th Edition regulations.

Key Features

• 16A rated current – suitable for small power and lighting circuits
• B Curve tripping – designed for standard residential and light commercial loads
• Type A sensitivity – detects AC + pulsating DC leakage
• High immunity – reduces nuisance tripping under harmonic-rich conditions
• Single-module width (18mm) – saves space inside the board
• Switched live & neutral – isolates both conductors
• Bi-directional – safe for use with PV and EV installs

Compare Mini RCBO Variants

• Product Code: WRB116B-030
• Rated Current: 16A
• Curve: B Curve
• Breaking Capacity: 6kA
• Poles: 1P + switched neutral
• Trip Sensitivity: 30mA
• Earth Leakage Detection: Type A (AC + pulsating DC)
• Module Width: 18mm
• Dimensions: 18 × 90 × 77 mm
• Standards: BS EN 61009-1

The WRB116B-030 is suitable for installation in DIN rail consumer units or compact distribution boards. All work must be carried out by a qualified electrician.

• Ideal for socket radials, lighting banks, and small appliances
• B Curve tripping – for standard domestic and light commercial circuits
• 18mm single-module design – optimises space in consumer units
• Switched neutral – simplifies testing and full isolation
• Compatible with EV/PV circuits requiring Type A DC detection

What applications suit a 16A B Curve RCBO?

It’s commonly used for socket circuits, lighting banks, or small fixed appliances where 16A protection is required.

When would I need the 16A C Curve instead?

If the circuit includes equipment with higher inrush currents – such as pumps, tools, or motors – the C Curve variant will perform better.

Is the WRB116B-030 compliant for modern installs?

Yes – with Type A detection and 30mA sensitivity, it meets 18th Edition requirements, including EV and PV installs.

Does it switch both live and neutral?

Yes. The device fully isolates both conductors to improve safety during faults or testing.