Residual current device with overcurrent release 4P 6kA C 20A/30mA A QC/QB ADM470QC

Comprehensive electrical circuit protection

The ADM470QC residual current circuit breaker with overcurrent protection is an advanced protective device that combines functions of protection against overloads, short circuits, and leakage currents in one compact unit. Thanks to its 4-pole design and Type C tripping characteristic, it is ideal for three-phase applications requiring high reliability.

Design and electrical parameters

The device provides a rated short-circuit breaking capacity Icn of 6 kA in accordance with the EN 61009-1 standard, guaranteeing effective protection even during strong short-circuit currents. A rated insulation voltage Ui of 500 V and a rated impulse withstand voltage Uimp of 4 kV ensure safe operation in installations with increased insulation requirements.

A rated current In = 20 A combined with a rated residual operating current Idn = 30 mA creates an optimal configuration for most lighting and socket circuits. Type A sensitivity enables the detection of both sinusoidal and pulsating unidirectional DC currents, which is particularly important for modern electronic loads.

Connection system and mounting

The design utilizes the QuickConnect system, which allows for fast and secure wire connections from both the top and bottom. Cross-sections for connected solid wires range from 1 to 25 mm², while stranded wires range from 1 to 16 mm², ensuring versatility of application.

The device is mounted on a standard DIN rail, occupying 4 module widths (71 mm) with a mounting depth of only 70 mm. This compact design allows for efficient use of space in modular distribution boards.

Operating and environmental parameters

The breaker maintains full functionality across a wide ambient temperature range from -25°C to +40°C, enabling use in both unheated rooms and industrial installations. The IP20 protection rating ensures safety against access to hazardous parts.

An energy limitation class of I²t = 3 and pollution degree II confirm high manufacturing quality and suitability for demanding applications. Total power loss of 11.7 W at the rated current demonstrates the energy efficiency of the design.

Normative compliance and safety

The device meets the requirements of the EN 61009-1 standard, confirming its safety of use and compatibility with European electrical installation standards. The design also takes into account the requirements for overvoltage category III and instantaneous tripping characteristics, ensuring an immediate response to emergency states.