



FuseBox RTAMB40 Compact B Curve Type A RCBO 40A 6kA
RTAMB40
FuseBox RTAMB40 40A Type A RCBO – Compact, High-Capacity Protection with B Curve & 6kA Breaking Capacity
The FuseBox RTAMB40 is a compact, single module RCBO that combines overload, short circuit, and residual current protection in one device. With a 40A rating, Type B tripping curve, and 6kA fault capacity, it’s ideal for high-demand residential circuits requiring reliable and space-saving protection.
- Comprehensive Protection: Delivers overload, short circuit, and 30mA earth leakage protection in one convenient unit.
- Type B Tripping Curve: Designed for general circuits with low inrush current such as sockets, lighting, and heating circuits.
- 40A Rated Current: Suitable for higher-load applications in domestic consumer units.
- Type A RCD: Detects both AC and pulsating DC earth leakage faults, ideal for use with modern electrical devices.
- Compact Design: Single module width for easy installation in FuseBox boards with minimal space usage.
Technical Specification
- Device Type: RCBO (Residual Current Breaker with Overcurrent Protection)
- Current Rating: 40A
- Tripping Curve: Type B
- RCD Type: Type A
- Breaking Capacity: 6kA
- Residual Current: 30mA
- Modules: Compact Single Module
✅ Choose the FuseBox RTAMB40 RCBO for safe, efficient, and compact protection of high-load residential circuits!

Trip Type | B Curve Type A |
Short Circuit Rating | 6kA |
Cable Capacity | 25 mm2 |
Sensitivity | 30 mA |
Rcd Type/class | A |
Product | RCBO |
Type | Singe Pole Compact |
Voltage | 230 V |
Mounting | DIN Rail |
Width | 18 mm |
Current Rating | 40A |
Standards | BS EN 61009-1 |
Number Of Poles | Double Pole (2P) |
Number Of Modules | 1 |
Delivery Options:
- PRIORITY DELIVERY – Next Working Day (All items in stock and ordered before 3 pm) - £7.08 inc-VAT. (£5.90 ex-VAT)
- Orders Over £100 (before VAT): We offer free standard shipping on all orders shipped to UK mainland addresses
- Orders under £100 (before VAT): Our standard delivery fee to UK mainland addresses is £5.90 ex-VAT (£7.08 inc-VAT)
*Delivery charges to JE, GY, TR, BT, IM, IV, HS, KW, ZE and certain PA post codes are £12 ex-VAT for all orders (Prices subject to change).
Items requiring specialist shipping:
- Orders containing Solar Panels, Batteries and/or Inverters: Up to 50 qty will be dispatched on a pallet and incur a £120 ex-VAT delivery charge**.
**Delivery charges to JE, GY, TR, BT, IM, IV, HS, KW, ZE and certain PA post codes are £180 ex-VAT (Prices subject to change).
Contact us if you have any further questions.