PUTAI's load switches provide reliable circuit control for medium-voltage systems, combining robust switching performance with integrated protection features.

Switchgear
ALL Vacuum Circuit Breaker (VCB) Load Switch Disconnecting Switch Earthing Switch / Grounding Switch Switchgear Outdoor Vacuum Auto Recloser
Transformer
ALL Distribution Transformer Dry Type Transformer Oil-Immersed Transformer
Protection Equipment
ALL Fuses Surge Arresters
Insulation Component
ALL Inflatable Cabinet Bushing Series Contact Box Wall Bushing Sensors Embedded Poles Epoxy Insulator Elbow Plates Series
Cable Accessories
ALL Cold Shrink Cable Accessories Heat Shrink Cable Accessories High Voltage Cable Plug and Socket Connector Explosion proof Joint Enclosure Cable Fusion Splice Cable Branch Box
Instrument Transformers
ALL AIS CT&VT GIS/SIS CT&VT
FLN36-12D, FLRN36-12D Indoor AC High Voltage Sulfur Hexafluoride Load Switch
  • Rated Voltage:12kV
  • Rated voltage factor:50Hz
  • Rated current:125A
  • Mechanical life:500
FN7-12 Indoor High Voltage Load Switch-Fuse Combination Unit
  • Rated Voltage:12kV
  • Rated Current:630A
  • Rated short-time withstand current (4S):20KA
  • Rated peak withstand current:50KA
FKN12A-12D Pneumatic Load Switch-Fuse Combination Unit
  • Rated Voltage:12KV
  • Rated Current:630A, 125A
Characteristics of Load Switch
Rated Voltage
12kV
Rated Current
125A - 630A
Short-Circuit Making Current
31.5kA - 50kA
Mechanical Life
2,000 operations
Operating Temperature
-25°C - +40°C
Power Frequency Withstand Voltage
42kV
Materials
6 global material development partners
Detection
100% internal dielectric and thermal performance testing
Compliance
Designed to meet IEC/ANSI standards
Traceability
Complete batch traceability and leading technical support
Why Choose Us
Strong weathering resistance
adapt to extreme environments such as coastal, high pollution, high temperature and high humidity.
High reliability
Reduces the risk of grid failures and reduces maintenance costs.
International Standard Adaptation
Meet the requirements of power equipment in the European, Middle East and Southeast Asian markets.
FAQ
What is the function of a Load Switch?
A load switch is designed to safely connect or disconnect a circuit under load conditions, ensuring smooth operation during maintenance.
What are the key features of a Load Switch?
It offers robust construction, fast switching speeds, and reliable insulation to handle high electrical stresses.
How does a Load Switch improve system safety?
By enabling controlled switching under load, it minimizes arc flash risks and reduces transient over-voltages.
What are the typical applications of a Load Switch?
Commonly used in distribution networks, industrial plants, and renewable energy systems for effective load management.
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Service & Support
Our certification team consists of 85+ engineers with more than 20 years of professional experience
24/7 Service. Average emergency response time is limited to less than 12 hours
Suitable for substations, industrial power grids, new energy projects and other demanding scenarios
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