Residual current device P 304 4P 63 A 100 mA type AC, TX3 series 411719

Residual Current Device – Safety and Installation Protection

The P304 63A 100mA Type AC residual current device from the TX³ series is a critical component of any modern electrical installation. Its purpose is to protect users and safeguard equipment against the consequences of short circuits and electric shocks. Commonly known as a “RCD,” this device detects imbalances in current flow and instantly disconnects the circuit upon detecting any anomaly.

This four-pole (4P) device with a rated current of 63A and sensitivity of 100mA (0.1A) Type AC is ideal for protecting high-power circuits. Designed for operation at 400V, it provides reliable protection in homes, apartments, commercial buildings, and industrial facilities. Its DIN-rail mounting is fast and intuitive, and its compact dimensions (4 module widths) allow optimal space utilization in distribution boards.

Construction and Functionality

Devices from the TX³ series are distinguished by high manufacturing quality and thoughtful design. The lower clamp and shielded terminals facilitate easy installation and connection of conductors with cross-sections ranging from 0.75 mm² to 50 mm² (single-core) or 0.75 mm² to 35 mm² (multi-core). Equipped with a mechanical lock, the device ensures additional safety during maintenance and repairs. The test button enables regular verification of proper device operation.

The TX³ series is compatible with the DX³ series, allowing flexible adaptation to individual installation requirements. The ability to integrate with auxiliary devices—such as auxiliary contacts, overcurrent and undervoltage trip units—expands the device’s functionality and enables the creation of a comprehensive protection system. The rated short-circuit breaking capacity reaches up to 10 kA, ensuring effective protection even during high surge currents.

Applications and Standards

The P304 TX³ device complies with EN 61008-1 standards, confirming its safety and reliability. It is designed to protect against electric shock and prevent fires caused by electrical faults. Thanks to its construction and technical parameters, it is suitable for both new installations and modernization of existing systems. Operation is guaranteed in ambient temperatures ranging from -25°C to +60°C, ensuring reliability under diverse operating conditions. The IP20 protection rating guards against finger contact and ingress of solid objects larger than 12.5 mm in diameter.