Residual current device PR 302 2P 63 A 300 mA Type A DX3 series 410432

The PR 302 residual current device is a reliable protection unit designed to safeguard people and electrical installations against the effects of leakage currents and short circuits. Intended for use in 230V circuits, it ensures safe operation and compliance with applicable standards. This is an add-on module compatible with DX³ circuit breakers, extending their functionality with residual current protection.

Protection and Applications

The PR 302 module features a rated current of 63A and a sensitivity to leakage current of 300mA, making it an ideal solution for protecting circuits with higher power demand. The Type A classification indicates its ability to detect both alternating and pulsating DC leakage currents, which is essential when connecting modern electronic devices. Residual current devices are critical wherever there is a risk of electric shock—residential, commercial, public buildings, and industrial environments. This device enables installers to provide customers with a high level of safety.

Construction and Installation

The PR 302 is designed for DIN rail mounting, simplifying and accelerating installation. Its compact dimensions (71.2 mm width) allow efficient use of space in distribution boards. It supports connection of single-core cables with cross-sections from 1.5 to 35 mm² and multi-core cables from 1.5 to 25 mm², offering flexibility in conductor selection. A locking mechanism prevents accidental removal from the circuit breaker, enhancing safety during maintenance and servicing. The IP20 protection rating guards against finger contact and ingress of solid objects larger than 12.5 mm.

Additional Features:

• Rated voltage: 170–253 V, ensuring compatibility with most power networks.
• Rated impulse withstand voltage: 4 kV – high resistance to voltage surges.
• Ambient temperature range: -25°C to +70°C – suitable for operation in harsh environmental conditions.
• No time delay setting: Immediate response to leakage current, minimizing shock risk.
• Non-adjustable residual current: Ensures consistent, unchangeable protection.
• Compliance with standards: Meets all requirements for safety and reliable operation.