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Home » Product » Indoor Load Break Switch » Load Break Switch Indoor/Lbs/12kv/630A/IEC62271

Load Break Switch Indoor/Lbs/12kv/630A/IEC62271

Min. order:10 Pieces
Trade Terms:FOB, CFR, CIF
Payment Terms:L/C, T/T, Western Union, Paypal, Money Gram

Product Details

Basic Info.

Model NO.:FKN12-12D
Installation:Indoor High-voltage
Structure:Three-column Disconnector
Rated Voltage:12kv
Rated Current:630A
Rated Power Frequency:50-60Hz
Export Markets:Global

Additional Info.

Packing:Export Wooden Cases
Standard:IEC62271-105, IEC62271-102
HS Code:8535900090
Production Capacity:500/Month

Product Description

FKN12-12D Series Indoor M.V. Load Break Switch 
FKN12-12D Load Switch with Earth Switch
FKN12-12R ON Load switch
FKN12-12DR High Voltage Load Break Switch ( on load disconnector)

The voltage 12kV, 24kV and 35kV. Indoor use, on load break switch, load break switch and loadswitch.

This switch is the basic type.

The interruption is carried out in the load-break switch FKN12, by a blow which strikes, deionizes and extinguishes the arc in a
very short time. The compressed air required for extinction is produced, during opening operation by the motion of the
cylinder(1) which acts also as moving contact, with respect to piston(2) housed inside and secured to the base of fixed
Through the special shape of tuyere(3) currents of some hundreds of amperes are interrupted by a limited yet sufficient air
As pressure increased gradually, this facilitates the interruption of inductive currents without causing dangerous overvoltage
while a quick dialectical regeneration between contacts ensuing the blow and the high separation speed of moving contact,
makes easier also the interrupting of capacitive currents.
In comparison with gas self-generating apparatus they have also the advantage of not undergoing, perceptible alteration after
each interruption.

Load Break Switch Indoor/Lbs/12kv/630A/IEC62271
Opening stages sequence of a load-break switch pole FKN12
1) Moving contact cylinder
2) Piston
3) Tuyere
4) Fixed cylinder

Load Break Switch Indoor/Lbs/12kv/630A/IEC62271

Rated voltage  kV  12 24 35
Maximum service voltage  kV  15 25.8 40.5
Withstand voltage to earth and between poles  kV  42 50 70
Withstand voltage across the isolating distance  kV  48 60 80
Impulse withstand voltage to earth and between poles  kV  85 125 170
Impluse withstand voltage across the isolating distance  kV  95 145 195
Rated current  630 630 630
Breaking capacity for active circuits(cos0.7)  630 630 630
Breaking capacity for no-load transformers  16 16 16
Breaking capacity for no-load line and cables  25 25 16
Short-time current  kA 20 20 12.5
sec.  2s  1s  1s   
Making capacity  kA  50 40 25
Supplier Profile
  • China manufacturers & suppliers Zhejiang Xikai Electric Co., Ltd.
  • Audited Supplier
  • Zhejiang, China
  • Business Type: Manufacturer
  • Main Products: Load Break Switch, Fuse, Circuit Breaker, Load Switch, Vacuum Load Break Switch, Outdoor Switch, Isolation Switch, Disconnector, High Voltage, Surge Arrester
  • OEM/ODM Service: Yes
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