The SF6 gas-insulated switchgear load switch from KENJING is a compact MV LBS for RMU and feeder applications. At 12 kV, 50 Hz, 630 A, it delivers 20 kA/4 s or 25 kA/3 s thermal withstand, 50/63 kA peak/making, and verified dielectric margins (42/48 kV PF, 75/85 kV LI). The SF6 gas-insulated switchgear load switch ensures safe breaking of 630 A active load/loop currents, with 6.3 A no-load transformer and 10 A cable-charging duties.
Key Features & Advantages
Duty ratings you can rely on: 630 A rated current; ≤35 μΩ main-circuit resistance; 5,000 mechanical operations.
Fault withstand & making: 20/4 s or 25/3 s short-time withstand; 50/63 kA peak and short-circuit making to coordinate with MV protection.
Switching performance: Rated for 100 active-load breaking operations; handles loop, transformer magnetizing, and cable-charging currents.
Dielectric strength: 1-min PF 42/48 kV and LI 75/85 kV across to-ground/phase-to-phase and open-gap tests for GIS service.
Compact GIS layout: 150 mm phase center distance fits RMU bays and compact medium voltage ring main unit footprints.
Application fit: Ideal as a gas insulated load break switch in feeders, sectionalizers, and 12kV load break switch retrofits.
Why Choose KENJING
Project-ready documentation: Interface drawings, interlocks, and wiring guides reduce site time.
Process consistency: Routine dielectric, resistance, timing, and pressure integrity tests on every SF6 gas-insulated switchgear load switch.
Lifecycle support: Spares and technical assistance for upgrades and RMU expansions.
Specify the KENJING SF6 gas-insulated switchgear load switch for your next RMU or feeder project. Contact our engineering team for layout drawings, interlock schemes, and delivery options.
NO | ITEM | UNIT | PARAMETERS | REMARKS |
1 | Rated Voltage | kV | 12 | |
2 | Rated Frequency | Hz | 50 | |
3 | Rated Current | A | 630 | |
4 | Rated Short-Time Withstand Current | kA/s | 20/4、25/3 | |
5 | Rated Peak Withstand Current | kA | 50/63 | |
6 | Rated Short-Circuit Making Current | kA | 50/63 | |
7 | Rated Active Load Breaking Current | A | 630 | |
8 | Rated Loop Breaking Current | A | 630 | |
9 | Rated No-Load Transformer Breaking Current | A | 6.3 | |
10 | Rated Cable Charging Breaking Current | A | 10 | |
11 | Number of Active Load Breaking Operations | TIME | 100 | |
12 | 1-Minute Power Frequency Withstand Voltage | kV | 42/48 | |
13 | Lightning Impulse Withstand Voltage | kV | 75/85 | |
14 | Mechanical Life | order | 5000 | |
15 | Main Circuit Resistance | μΩ | ≤35 | |
16 | Phase Center Distance | mm | 150 |

