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Mingri Electric Launches SJKM1L Earth Leakage Circuit Breaker – Advanced Protection for Modern Electrical Systems
The SJKM1L ELCB provides reliable earth leakage, overload, and short-circuit protection for 400V/50Hz systems up to 800A. With adjustable residual current protection from 30mA to 30A, it effectively prevents electrical fires and equipment damage.
Available in molded case (M-type) and high-breaking capacity (H-type) versions, it features 800V insulation, vibration resistance, and flexible vertical or horizontal installation. Its compact design saves space in distribution panels.
Product Overview
Mingri Electric introduces the SJKM1L Earth Leakage Circuit Breaker, a high-performance safety device for 400V/50Hz systems. With current ratings up to 800A and 30mA-30A residual current protection, it prevents electrical fires and equipment damage from ground faults.
Technical Highlights
| Parameter | SJKM1L-125 | SJKM1L-250 | SJKM1L-400 | SJKM1L-800 |
| Rated Current | 16-125A | 125-250A | 250-400A | 400-800A |
| Poles | 3P/4P | 3P/4P | 3P/4P | 3P/4P |
| Breaking Capacity (Icu) | 35-50kA | 35-50kA | 50-65kA | 50-65kA |
| Residual Operating Current (IΔn) | 30mA-500mA | 30mA-500mA | 100mA-500mA | 300mA-1000mA |
★The SJKM1L series offers versatile configurations with breaking capacities up to 65kA and insulation voltage of 800V. Its dual versions – M-type for standard applications and H-type for high-breaking needs – ensure adaptability across various environments.★
Design & Installation
Designed for flexibility, the SJKM1L supports both vertical and horizontal mounting, saving space in compact distribution boards. Its vibration-resistant construction and arc-quenching design enhance durability and safety in high-demand settings.
Application Scenarios
Ideal for motor circuits, manufacturing plants, renewable energy systems, and commercial complexes, the SJKM1L delivers reliable earth leakage and overload protection where safety cannot be compromised.
Why Choose Mingri Electric
Mingri Electric combines rigorous testing, international standards compliance, and customer-focused innovation. The SJKM1L series reflects our commitment to quality and electrical safety worldwide.