Gold Member Since 2005
Audited Supplier
Ningbo Tianan Group Co., Ltd.

Load switch, breaker, vacuum load switch manufacturer / supplier in China, offering FZN58-12 Series indoor AC high voltage vacuum load switch, load switch - fuse combinations, 110KV Three-Phase Oil Immersed Power Transformer, GCS/GCK/GCT Low Voltage, Electrical Switch Power Distribution Drawable Switchgear and so on.

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Supplier Homepage Product HV-Load Switch FZN58-12 Series indoor AC high voltage vacuum load switch, load switch - fuse combinations

FZN58-12 Series indoor AC high voltage vacuum load switch, load switch - fuse combinations

Purchase Qty.:
100-499 500+
FOB Unit Price: US $200 US $180
Purchase Qty. (Pieces) FOB Unit Price
100-499 US $200
500+ US $180
Get Latest Price
Production Capacity: 5000 Set / Year
Transport Package: Expert Standard
Payment Terms: L/C, T/T, D/P, Paypal

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Basic Info
  • Model NO.: FZN58-12
  • Structure: Three-column Disconnector
  • Operation: Manual
  • Movement Mode: Vertical Rotary Type
  • Grounding: Single Ground
  • Run: Plug-In
  • Common Model: FZN58-12
  • Certification: ISO, IS9001, ISO9001, ISO9002
  • Rated volatge: 12KV
  • Rated short-circuit current: 50KA
  • Trademark: Tianan Electric
  • 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: Manual
  • Brand: Tianan Electric
  • Rated current: 630A
  • Types: FZN58-12
  • Specification: IEC
Product Description
FZN58-12 Series indoor AC high voltage vacuum load switch, load switch - fuse combinations
1. Product Description
        FZN58-12/T630-20 Type indoor AC high voltage vacuum load switch and FZR N58-12 / T125 -31.5 load switch - fuse combination is suitable for 50Hz, rated voltage of 10kV network. May be breaking the load current, overload current and short circuit current; phase also has a protective effect, especially suitable for oil-free, no maintenance and long cycle operation requires frequent the place, and widely used in RMU, box substations.
        This product has a high-level, low maintenance, compact, and is suitable for use on city networks and other large projects.
2. Type meaning
F Z R N 58 - 12 / T - 0
F: load switch
Z: Vacuum
R: fuses and load switch linkage
N: Indoor
58: Reference Design
12: Rated voltage (kV)
T: spring operating mechanism
0: Rated current (A)
0: Rated short-circuit breaking current (kA)

3. Structure Introduction
        Vacuum load switch fitted solid seal vacuum pole, spindle, opening spring, rubber cushion and other components installed in the undercarriage, the undercarriage back has mounting holes for hanging with a load switch, spindle insulated rod, crank arm with vacuum interrupter movable guide rod connection. Mechanism mounted on the base chassis side, the side that match your switch is installed in the cabinet.
        By a combination of electrical FZN58- 12 vacuum load switches, fuses, frame, seat and contact trip device and other components, frame made of aluminum coated zinc plate bending assembled, the fuse with a maximum current up to 125A. Electric hand can operate dual load switch. Three-phase fuse arranged longitudinally.
        This product has the lack of protection function, when the short-circuit current or load current flows through the main circuit in which any one or more phases of the fuse is blown, the impactor motion, energy output and rapid impact load interlock switch, the load switches gate.
4. Technical parameters: load switch
1Rated voltagekV12
2Rated currentA630
3Rated frequencyHz50
4Rated short time withstand currentkA20
5Rated peak withstand currentkA50
6Rated short durations4
7Rated short-circuit currentkA50
8Rated breaking current loopA630
9Rated active load breaking currentA630
10Rated cable charging currentA10
11Rated insulation levelPower frequency withstand (1 min)phases, earthing, fracturekV42
Lightning impulse withstand voltagephases, earthing, fracturekV75
12Secondary circuit insulation level (1 min)V2000
13Rated active load breaking current times
100 (E3)
14Rated short-circuit current closing times
5 (E 3)
15Open contactsmm8.5 ± 1
16The contact overtravelmm2.5 ± 1
17Three-phase closing different periodms<= 2
18Closing contacts bounce timems<= 2
19Each phase main circuit resistanceµ Ω<= 80
20Phases center distancemm200 ± 2
21Average opening speedm / s1.2 ± 0.2
22Average closing speedm/s0.6 ± 0.2
23Static and dynamic contact permission attrition accumulation thicknessmm<= 2
24Mechanical life
25Contact pressureN900 ± 100
26Opening timems15 ~ 60
27Closing times<= 10
5. Technical Parameters :Load switch - fuse combinations
1Rated voltagekV12
2Rated currentA125
3Rated short circuit breaking currentkA31.5
4Rated short-circuit currentkA80
5Rated transfer currentA3150
61 min power frequency withstand voltage phase / fracturekV42/49
7Lightning impulse withstand voltage phase / fracturekV75/85
8Fuse striker output energyJ2 ~ 5
9Rated transfer currentA3150
6. Technical Parameters:Combination of electrical fuses
Rated voltage (and the highest voltage) kV12
Rated current A40 ,125
Fuse rated current A6.3,10,16,20,25,31.5,40,50,63,80,100,125
Rated breaking current (rms) kA31.5
7.Ordering Information
   Customers when ordering
a, load switch name, type, size and number of orders
b, load switch rated voltage, rated current
c, functional programs, installation
d, rated operating voltage
e, the name of spare parts, and counting
Customers who have other special requirements, when ordering
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Mr. xuyelin
Project Manager
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