Gold Member Since 2017
Audited Supplier
Wenzhou Unisun Electric Co., Ltd.

Load Break Switch, Sf6 Load Break Switch, Load Switch manufacturer / supplier in China, offering Indoor Sf6 Load Break Switch, Fix Version 0.4kv Electric Power Distribution Cabinet Low Voltage Switchgear, 33kv Draw-out Type Air Insulation Metal Enclosed Switch Cabinet and so on.

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Supplier Homepage Product Load Break Switch Indoor Sf6 Load Break Switch

Indoor Sf6 Load Break Switch

FOB Price: US $100 / Set
Min. Order: 1 Set
Min. Order FOB Price
1 Set US $100/ Set
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Port: Ningbo, China
Production Capacity: 50000
Payment Terms: L/C, T/T, Western Union, Paypal, Money Gram

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Basic Info
  • Model NO.: UN-LBS
  • Structure: Three-column Disconnector
  • Operation: Electric
  • Movement Mode: Horizontal Rotary Type
  • Grounding: Single Ground
  • Run: Turn the Horizontal
  • Common Model: Un-Lbs
  • Certification: GS, RoHS, CE, ISO9001
  • Tag: Load Break Switch
  • Short-Time Withstand Current: 630A
  • Switch: 630A
  • Transport Package: Wooden
  • Origin: China
  • Type: High-voltage
  • Installation: Indoor High-voltage
  • Grounding Mode: Grounding
  • Number of Poles: Three Pole
  • Series: Three
  • Switching Mode: Single Throw-in
  • Structure of Operating: Pneumatic
  • Brand: Unisun
  • Rated Voltage: 12kv / 24kv / 36kv
  • Transformer off Load: 16A
  • Trademark: UNISUN
  • Specification: 12KV/24KV
  • HS Code: 85372090
Product Description

iUN-LBS SF6 Load Break Switch

MV Indoor switch disconnector

1) Description
UN-LBS is a switch or switch combination is suitable for compose air insulation ring main unit for up to 36 kV.
UN-LBS is designed for indoor applications, and meets requirements concerning human safety as well as ease of installation, operation and protection of the environment.
2) Feature
  • Upgradability
  • Compact
  • Maintenance
  • Easy installation
  • Ease and safe to operate
3) Standards
UN-LBS units meet following standard: IEC62271-103/ IEC 62271-102/ IEC 62271-200
4) Dimensions and weights
630 A switch - 630 A disconnector                                                 Weight: 50 kg
Below view                                      Side view                        Front view

Indoor Sf6 Load Break Switch

36KV 630 A switch - 630 A disconnector (width 750 mm)                                     Weight: 75 kg
Below view                                   Side view                        Front view
Indoor Sf6 Load Break Switch


5) Switch or disconnector and earthing switch
Gas tightness
The three rotating contacts are placed in an enclosure filled with gas to a relative pressure of 0.4 bar (400 hPa) for UN-LBS 12-24 kV and 1 bar (1000 hPa) for UN-LBS 36 kV. It satisfies "sealed pressure system" requirements and seal tightness is always factory checked.

Operating safety
  • The switch may be in one of three positions: "closed", "open", or "earthed", representing a natural interlocking system that prevents incorrect operation. Moving-contact rotation is driven by a fast-acting mechanism that is independent of the action of the operator.
  • The device combines the breaking and disconnection functions.
  • The earthing switch placed in the SF6 has a short-circuit making capacity, in compliance with standards.
  • Any accidental over-pressures are eliminated by the opening of the safety membrane, in which case the gas is directed toward the back of the unit, away from the operator.
Indoor Sf6 Load Break Switch

6) Main characteristics SF6 Load Break Switch
Rated voltage (kV)7.2122436
Insulation level
50 Hz, 1 min
(kV rms)
(kV peak)
Short-time withstand current
Short-time withstand current
(kA.1 s)
Disconnector (kA/1 s)25630 - 1250 A1250 A
20630 - 1250 A
16630 - 1250 A
12.5630 - 1250 A
Maximum breaking capacity
Transformer off load (A)16
Cables off load (A)31.550
Switch (A)630
Fuse-switch ** (kA)2520

Indoor Sf6 Load Break Switch


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