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UKF7-63 ELCB 4Pole 400V AC RCD 30Ma 6A Residual Current Circuit Breaker

UKF7-63 Earth leakage Circuit Breaker

The UKF7-63 Earth leakage Circuit Breaker is a high-performance 4-Pole Earth Leakage Circuit Breaker (ELCB), also known as a Residual Current Device (RCD). Designed for 400V AC low-voltage electrical systems, this device integrates overcurrent protection with life-saving earth leakage protection, making it a critical safety component for residential, commercial, and industrial applications.

With a rated current of 6A and a sensitive residual operating current of 30mA, this breaker can rapidly detect and interrupt earth fault currents, effectively preventing the risk of electric shock and electrical fires. It is manufactured in strict compliance with international IEC 61008-1 and Chinese GB/T 16916.1 standards, guaranteeing exceptional performance, safety, and reliability.

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Key Features

  • Dual Protection: Provides reliable overload/short-circuit protection combined with highly sensitive earth leakage protection.
  • Enhanced Personal Safety: 30mA high-sensitivity trip current offers critical protection against direct contact (electric shock).
  • Wide Applicability: Ideal for use in homes, offices, retail spaces, and factories for the protection of final circuits in single-phase 230V AC systems.
  • Standards Compliance: Certified to IEC 61008-1 and GB/T 16916.1 standards, ensuring proven quality and safety.
  • Reliable Performance: Ensures quick and accurate circuit disconnection upon the detection of a dangerous residual current.

Applications

  • Residential distribution boards
  • Commercial building lighting circuits
  • Socket-outlet (receptacle) circuits
  • Power supply protection for portable equipment.

Table 1: Electrical & Performance Parameters

Parameter Specification
Conform to Standard IEC 61008-1, GB/T 16916.1
Earth Leakage Motion Time Non-sealed. Minimum 10ms delay. Minimum 40ms delay (Selective).
Rated Voltage (Ue) 230/400V; 50/60Hz
Rated Current (In) 16, 25, 40, 63A
Rated Earth Leakage Current (IΔn) 10, 30, 100, 300, 500mA
Sensitivity Capability AC Type, A Type
Short-time Withstand Current 10kA (with 63A fuse), 10kA (with 80A fuse F7-80)
Resist Climate Condition Power According to IEC 61008 Standard
Case Protection Grade (IP) IP40 (after installation)
Electrical Life Not less than 4000 switching operations
Mechanical Life Not less than 20000 switching operations

Table 2: Mechanical Parameters

Parameter Specification
Installation Mode Standard IEC Rail Mounting
Terminal Block Capability Conductor: 1-25mm²; Busbar Thickness: 0.8-2mm
Enclosure Width 2 Pole: 35mm; 4 Pole: 70mm

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