Home Complementary Electrical Products ML50H Residual Current Circuit Breaker

ML50H Residual Current Circuit Breaker

ML50H RCCB

The ML50H Series is a residual current circuit breaker without over-current protection, designed to detect earth leakage faults and protect people and electrical installations in residential, commercial, and industrial low-voltage distribution systems.

• Residual current protection without over-current protection
• Protects people against direct and indirect contact risks
• Helps reduce fire hazards caused by insulation faults
• AC, A, AC-S, and A-S type options available
• Sensitivity options: 10mA, 30mA, 100mA, 300mA, 500mA
• 2P and 4P versions for single-phase and three-phase systems
• Rated current options up to 100A
• Short-circuit capacity options up to 6kA / 10kA
• Fault current indicator for easier status identification
• DIN-rail installation for easy integration into distribution boards

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Features & Advantages

feature

Reliable Earth Leakage Protection

Detects residual current faults and disconnects the circuit to help protect people and electrical installations from leakage current risks.

AC, A & Selective Type Options

Available in AC, A, AC-S, and A-S types to match different residual current waveforms and system protection requirements.

Multiple Sensitivity Levels

Supports 10mA, 30mA, 100mA, 300mA, and 500mA sensitivity options for personal protection, indirect contact protection, and fire risk reduction.

Selective Protection for Distribution Boards

S type versions provide delayed tripping for better coordination with downstream RCDs, helping improve protection selectivity in main and sub-distribution systems.

Easy DIN-Rail Installation

2P and 4P versions with DIN-rail mounting make it easy to integrate into residential, commercial, and industrial distribution boards.

Target

Application Areas

01
Residential Buildings

Protect household lighting, socket, bathroom, and general distribution circuits from earth leakage and electric shock risks.
02
Commercial Facilities

Provide residual current protection for offices, shops, schools, clinics, and other commercial or public electrical installations.
03
Industrial Distribution Systems

Protect low-voltage industrial circuits and equipment from earth leakage faults caused by insulation failure.
04
Main & Sub-Distribution Boards

Suitable for coordinated leakage protection in main and sub-distribution panels, especially when selective S type protection is required.