Legrand 411801 Residual Current Circuit Breaker 4P 63A 0.3A Type A-S

The Legrand 411801 is a high-performance 4-pole residual current circuit breaker (RCCB) engineered to provide robust electrical safety and circuit protection. Designed for reliability, this device operates with a rated current of 63A and a sensitivity of 0.3A. As a Type A-S unit, it offers selective protection, making it an essential component for maintaining electrical integrity in both residential and industrial distribution systems. Its construction ensures durability and seamless integration into standard electrical panels, providing a dependable solution for monitoring residual currents.

Advantages

This circuit breaker features enhanced immunity to unwanted tripping, which is particularly beneficial in environments prone to electrical disturbances. By supporting both AC and DC component fault detection, the Type A-S classification ensures a higher level of safety compared to standard breakers. The device is fully compatible with the DX3 range of auxiliaries and accessories, allowing for flexible system expansion and customized protection configurations according to specific installation requirements.

Suitable for

• Industrial electrical installations
• Residential distribution boards
• Environments with high electrical interference
• Systems requiring selective residual current protection

When it may not be suitable

This device is not intended for use in circuits where a higher sensitivity than 0.3A is required for life protection, as this specific model is designed for equipment protection and fire prevention rather than direct contact protection. It may also be unsuitable for applications requiring a non-selective, instantaneous tripping characteristic.

Key specifications

• Number of poles: 4
• Rated current: 63A
• Sensitivity: 0.3A
• Type: A-S (Selective)
• Compliance: IEC 61008-1
• Colour: Grey

How to use

The Legrand 411801 should be installed by a qualified electrician within a standard distribution board. It is mounted onto a DIN rail, ensuring secure mechanical connection. Once installed, the device monitors the circuit for residual currents. The selective nature of the Type A-S breaker means it will coordinate with downstream protective devices to ensure that only the faulty circuit is isolated, maintaining power to the rest of the installation.

What to consider before purchase

• Verify that the 63A rating matches your circuit load requirements
• Ensure the 0.3A sensitivity is appropriate for your specific application
• Check compatibility with existing distribution board space
• Confirm that a selective (S-type) breaker is required for your installation hierarchy

Usage recommendations

Regularly test the functionality of the residual current circuit breaker using the integrated test button to ensure the mechanism remains operational and provides continuous protection for your electrical system.