24KV Indoor SF6 Load Break Switch
| Brand | ROCKWILL |
| Model NO. | 24KV Indoor SF6 Load Break Switch |
| Rated voltage | 24kV |
| Series | RLS |
Product Overview
The RLS-24B is an advanced indoor high-voltage SF6 load switch designed for 12kV/24kV power distribution systems. Utilizing SF6 gas as both an arc-extinguishing and insulation medium, it integrates three contactors (switching-on, switching-off, and grounding) in a compact, easy-to-install design. The RLS-24B and its variant, the RLS-12/24B (load switch + fuse combination), provide reliable protection and control for power supply equipment and substations, making them ideal for ring main units (RMUs), cable branch cabinets, and switching substations.
Compliant with GB3804-1990, IEC60256-1:1997, GB16926, and IEC60420, this switchgear ensures high performance in diverse electrical environments.
Key Features
SF6 Gas Technology– Superior arc-extinguishing and insulation properties
Compact & Lightweight– Space-saving design for easy installation
Triple Contactor System– Switching-on, switching-off, and grounding in one unit
High Adaptability– Suitable for harsh environments with minimal maintenance
Fuse Combination Option (RLS-12/24B)– Enhanced protection for transformers and cables
Product Advantages
Reliable Performance– SF6 ensures stable operation with minimal wear
Easy Operation– Simple mechanism reduces maintenance needs
Versatile Protection– Fuse-compatible model prevents overload damage
Wide Compliance– Meets GB, IEC, and international standards
Robust Construction– Resists humidity, altitude (up to 2500m), and mild corrosive conditions
Application Scenarios
Ring Main Units (RMUs)– Secure switching in urban power grids
Cable Branch Cabinets– Reliable power distribution for industrial zones
Switching Substations– Safe load control in medium-voltage networks
Transformer Protection– Fuse-integrated model prevents fault escalation
Environmental Specifications
Operating Temperature: -5°C to +40°C
Humidity Tolerance: Daily avg. 90% / Monthly avg. 95%
Max. Altitude: 2500m
Technical data
Matching dimension of SF6 load break switch-fuse combination Fig 1) SF6 load break switch without upper cubicle
Outline dimension & installation sizes
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SF6-Free Solution for Air-Insulated/Eco-friendly Gas Ring Main UnitsⅠ. Technical Bottlenecks of SF₆ SubstitutionInsulation Medium Performance Gapo Dried Air/N₂ insulation strength is only 1/3 of SF₆, requiring expansion of contact gap from 60mm to ≥150mm.o Conventional spring mechanisms lack energy to drive rapid closure of large gaps, easily causing contact ablation due to pre-strike.o Synthetic gases (e.g., C4+CO₂) decompose under arcing, leading to irreversible insulation degradation.Mechanical Structural Limitationso National Grid standardization fix16/08-2025 -
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Pressure Relief Safety Solution for Gas-Insulated Ring Main UnitsⅠ. Problem ContextAs a core component in urban power distribution networks, ring main units (RMUs) are widely used in residential areas, factories, and public buildings due to their compact structure, low cost, and high reliability. However, internal equipment failures or arc faults may generate high-temperature, high-pressure gas, leading to cabinet explosions that endanger personnel and equipment. While traditional sealed designs maintain insulation integrity, they fail to rapidly release sud16/08-2025
