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SUPPLIER TO ELECTRICAL TRADE & INDUSTRY SINCE 1985 - For any inquiries, feel free to contact us at 0121 554 1371.
SUPPLIER TO ELECTRICAL TRADE & INDUSTRY SINCE 1985 - For any inquiries, feel free to contact us at 0121 554 1371.

The FuseBox RTAMB20BD is a 20A Type B RCBO designed to provide combined overcurrent and residual current protection within a single compact unit for modern electrical installations. This 1P+N device integrates both MCB and RCD functionality, helping to protect circuits against overload, short circuit and earth leakage faults within consumer units. With a 30mA Type A sensitivity, it is suitable for detecting both AC and pulsating DC residual currents, making it appropriate for circuits supplying modern electrical equipment. The single module format allows efficient use of space within distribution boards, supporting clean and organised layouts where multiple protective devices are installed. Its bidirectional design enables flexible installation, allowing supply to be connected from either the top or bottom terminals, depending on site requirements. Designed for use in residential, commercial and light industrial environments, the unit provides a 6kA short circuit breaking capacity for dependable performance under fault conditions. DIN rail mounting ensures straightforward installation, while the compact design supports consistent results across a range of electrical applications. This RCBO provides a practical and reliable solution for installers requiring efficient protection with modern compatibility.

Key Features

• Combined MCB and RCD protection in a single device
• Compact single module design for space-saving installations
• Bidirectional terminals allow flexible supply connection
• Type A protection suitable for modern electrical loads
• Designed for compatibility with FuseBox consumer units
• DIN rail mounting for straightforward installation

Technical Specifications

• Manufacturer: FuseBox
• Model reference: RTAMB20BD
• Rated current: 20A
• Tripping curve: Type B
• Residual current rating: 30mA
• RCD type: Type A
• Number of poles: 1P+N
• Short circuit capacity: 6kA
• Voltage rating: 230V
• Frequency: 50Hz
• Module width: 1 module
• Mounting type: DIN rail
• Bidirectional capability: Yes

Orders with standard delivery are dispatched within 3-7 working days. Standard delivery is free on orders over £100 and costs £6.75 for orders under this amount.

For quicker delivery, select our express shipping option at checkout for £8.95. With express shipping, we aim to deliver within 1-3 working days, although delivery times are ultimately managed by the courier once your order has shipped.

Some items may be stored in external warehouses. If so, we’ll notify you and arrange for delivery to our store or directly to you.

For complete details, visit our Delivery Information page (opens in a new tab).

Please review our Terms & Conditions before completing your purchase.

We strongly recommend arranging a qualified electrician to install any electrical items only after your order has been delivered. PU Electrical Wholesaler is not liable for any electrician fees incurred due to unexpected delivery delays.

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