Legrand 411725 DX3 Residual Current Circuit Breaker 4P 80A 0.3A Type AC

The Legrand 411725 DX3 is a high-performance 4-pole residual current circuit breaker (RCCB) engineered to provide robust electrical safety and circuit protection in demanding environments. Designed for industrial and commercial electrical distribution systems, this device effectively monitors for leakage currents to prevent electrical hazards. It features a rated current of 80A and a sensitivity of 0.3A, operating on type AC technology to ensure reliable detection of fault currents in standard electrical installations.

Advantages

This residual current circuit breaker offers enhanced immunity to unwanted tripping, which is critical for maintaining operational continuity in electrically disturbed environments. Its robust construction ensures long-term reliability and safety, adhering to international standards for electrical equipment. The device is highly versatile, allowing for the integration of various DX3 auxiliaries and accessories, which enables users to customize the protection system according to specific site requirements. The grey-colored housing is designed for easy identification and integration into standard electrical panels.

Suitable for

• Industrial electrical distribution boards
• Commercial building power management systems
• Protection of circuits against leakage currents
• Installations requiring enhanced immunity to electrical interference

When it may not be suitable

This device is specifically designed for detecting AC component faults. It is not suitable for applications where DC component fault detection is required, as it does not meet the criteria for type A or type B protection. Furthermore, it should not be used in circuits exceeding its rated current of 80A.

Key specifications

• Number of poles: 4
• Rated current: 80A
• Sensitivity: 0.3A
• Type: AC
• Standard compliance: IEC 61008-1
• Color: Grey

How to use

The Legrand 411725 DX3 must be installed by a qualified electrician in accordance with local electrical regulations and the provided technical documentation. It is mounted onto a standard DIN rail within an electrical distribution board. Ensure that the supply cables are correctly connected to the input terminals and that the load is connected to the output terminals, observing the correct polarity and torque settings. Once installed, the device should be tested using the integrated test button to verify its mechanical and electrical functionality.

What to consider before purchase

• Verify that the 80A rated current matches your circuit load requirements.
• Ensure that the 0.3A sensitivity is appropriate for the intended level of protection.
• Confirm that the installation environment only requires AC type fault detection.
• Check available space in the distribution board for a 4-pole device.

Usage recommendations

Regularly test the residual current circuit breaker using the built-in test button at least every six months to ensure the mechanism remains operational and provides consistent protection for your electrical system.