Description
20A Type A RCBO B Curve 6kA Uni-Directional
Timeguard TX2420 20A Type A RCBO B Curve
The Timeguard TX2420 20A Type A RCBO B Curve is a single-module, uni-directional residual current circuit breaker with integrated overcurrent protection, designed for installation in Timeguard consumer units and compatible distribution boards. It provides combined protection against overload, short-circuit and earth leakage faults for individual final circuits in domestic installations.
Rated at 20A with a Type A residual current characteristic and 30mA sensitivity, this RCBO offers protection against AC and pulsating DC residual currents. The B curve tripping characteristic makes it suitable for socket circuits and other low inrush current applications, ensuring stable operation and effective discrimination.
The unit features a compact 1P+N (single pole with switched neutral) configuration in a single-module width, supporting higher circuit density within consumer units. It mounts onto a standard 35mm DIN rail and can be removed without disturbing the busbar, simplifying installation, inspection and future upgrades.
With a 6kA short-circuit breaking capacity, the TX2420 includes a test button for routine functional testing and a clear contact position indicator for easy visual status checks. It complies with BS EN 61009-1 and is intended for uni-directional domestic applications in accordance with current UK wiring regulations.
Key Features – Timeguard TX2420 RCBO
- 20A rated current
- B curve tripping characteristic
- Type A residual current protection
- 30mA sensitivity
- 6kA breaking capacity
- Single pole + switched neutral (1P+N)
- Single-module width (18mm)
- 35mm DIN rail mounting
- Test button and contact position indicator
- Uni-directional design
Technical Specification – Timeguard TX2420 RCBO
- Rated Current: 20A
- Tripping Curve: B Curve
- RCD Type: Type A
- Residual Current Sensitivity: 30mA
- Breaking Capacity: 6kA
- Voltage: 230–240V AC
- Frequency: 50/60Hz
- Poles: 1P+N
- Module Width: 18mm
- Mounting: DIN rail (35mm)
- Direction: Uni-directional
- Standard: BS EN 61009-1
About Timeguard
Timeguard is a UK manufacturer producing a wide range of electrical control, timing and circuit protection products for domestic and commercial environments. Its RCBOs and consumer units are developed to meet current UK wiring regulations, offering dependable protection, installer-friendly design and consistent long-term reliability.
About Electrical4Less
Electrical4Less is an independent UK electrical wholesaler supplying regulation-compliant electrical products to trade and commercial customers. As members of the IBA Buying Group and the Electrical Distributors’ Association (EDA), we combine competitive pricing, reliable stockholding and knowledgeable technical support.




