Doktorvolt DV-4490 RCCB Residual Current Circuit Breaker 2P 25A 30mA 10kA Type A

The Doktorvolt DV-4490 is a high-quality 2-pole residual current circuit breaker (RCCB) engineered to enhance electrical safety in both residential and commercial environments. This device is designed to detect and interrupt electrical circuits when a fault current to earth is detected, effectively preventing electric shocks and reducing the risk of fire caused by insulation failures. With its robust construction and adherence to VDE standards, it serves as a reliable component for modern electrical distribution boards.

Advantages

The primary advantage of the Doktorvolt DV-4490 is its Type A sensitivity, which allows it to detect both alternating sinusoidal residual currents and pulsating direct residual currents. This makes it significantly more versatile and safer than standard AC-type breakers in modern homes filled with electronic devices. Its 10kA short-circuit capacity ensures that the device can withstand high-energy fault conditions, providing a durable and long-lasting solution for circuit protection. The compact 2-pole design allows for easy integration into standard DIN-rail mounting systems, saving valuable space in electrical enclosures.

Suitable for

• Residential electrical installations for lighting and power circuits
• Commercial office buildings requiring standard earth leakage protection
• Protection of circuits supplying electronic equipment with power supplies
• Integration into consumer units and distribution boards

This device is not intended for use in high-voltage industrial power grids or circuits exceeding its rated current of 25A. It should not be used as a primary protection device for circuits requiring Type B or Type F protection, which are specifically designed for complex frequency converter applications.

Key specifications

• Number of poles: 2
• Rated current: 25A
• Rated residual operating current: 30mA
• Short-circuit capacity: 10kA
• Type: A
• Mounting: DIN-rail

Installation must be performed by a qualified electrician in accordance with local electrical regulations. The device is mounted onto a standard 35mm DIN rail within a distribution box. Ensure that the supply cables are correctly connected to the input terminals and that the load is connected to the output terminals. After installation, the functionality should be verified using the integrated test button to ensure the tripping mechanism operates correctly.

What to consider before purchase

• Verify that the 25A rated current is sufficient for the specific circuit load
• Ensure the 30mA sensitivity meets the safety requirements for your installation type
• Confirm that the Type A classification is appropriate for the connected equipment
• Check available space on the DIN rail within your existing distribution board

Regular maintenance is recommended, including pressing the test button at least every six months to ensure the mechanical tripping function remains operational and free from debris or oxidation.