Gold Member Since 2015
Audited Supplier
Yueqing Heyi Electrical Co., Ltd.

Load Break Switch, 11kv Load Break Switch, 36kv Load Break Switch manufacturer / supplier in China, offering Indoor High Voltage Vacuum Load Break Switch Isolator Switch 3 Phase, Three Phase Current Transformer D363 50-600A 3 in 1 Combined Cts, Kct-24 Split Core CT Clamp Current Transformer with Earthphone Plug and so on.

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Supplier Homepage Product High voltage vacuum breaker Vacuum circuit breaker Indoor High Voltage Vacuum Load Break Switch Isolator Switch 3 Phase

Indoor High Voltage Vacuum Load Break Switch Isolator Switch 3 Phase

Purchase Qty.:
1-9 10-99 100+
FOB Unit Price: US $1,170 US $1,169 US $1,168
Purchase Qty. (Pieces) FOB Unit Price
1-9 US $1,170
10-99 US $1,169
100+ US $1,168
Get Latest Price
Production Capacity: 1000PCS/ Month
Transport Package: 1PCS/ Strong Wooden Package
Payment Terms: L/C, T/T, D/P, Paypal, Money Gram, Western Union

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Basic Info
  • Model NO.: FZN21-12DR/T125-31.5
  • Operation: Electric Type
  • Arc-extinguishing Medium: Vacuum
  • Structure: Vcb
  • Type: Fuse
  • Certification: ISO9001-2000, CE, CB, CCC
  • Motor Operating Supply Voltage: AC/DC 110V/220V
  • Rated Active Load Breaking Current: 1250A
  • Rated Frequency: 50/60 Hz
  • Configuration: with Fuses
  • Rated Voltage: 12 Kv
  • Specification: CE ROHS
  • HS Code: 85310000
  • Breaking Capacity: High Voltage Circuit Breakers
  • Speed: High-Speed Circuit Breaker
  • Installation: Fixed
  • Poles Number: 3
  • Function: Circuit-Breaker Failure Protection
  • Mechanical Life: 10000times
  • Air Clearance Across Contacts: 300mm
  • Application: Indoor
  • Ambient Air Temperature: -15 to +40
  • Certificate: ISO9001,IEC
  • Trademark: OEM/HEYI
  • Origin: Zhejiang Yueqing
Product Description
indoor high voltage vacuum load break switch isolator switch 3 phase      

FZ (R) N21-12D indoor high-voltage vacuum load switch and composite apparatus, used for circuit AC 50Hz, rated voltage 12kV, plays power distribution, control and protection of electrical equipment function. It can replace the expensive circuit breaker in a certain range, thus saving the power grid investment costs. The combination of electrical appliances can be widely used in the ring network power supply system in urban and rural areas. Under normal operation condition, it can close, bearing and breaking rated current, also can break the specified short-circuit current under abnormal conditions, especially suitable for the control and distribution and protection of transformer. 

1Rated voltagekV12
2Rated frequencyHz50
3Rated currentA6301250
4Rated insulation level1min power frequency withstand voltagekVArc-quenching chamber fracture 48
(effective value)Earth , phase 42, insulating fracture 48
Lightning impulse withstand voltage (peak)Earth , phase 75, insulating fracture 85
 5Rated dynamic current (peak)kA50
64S thermal currentkA20
7Rated power load breaking currentA630
8Rated closed-loop breaking currentA630
9Rated cable charge breaking currentA10
10Rated breaking no-load transformer capacityKVA1250
11Rated breaking AC currentA3150
12Rated short-circuit closed currentkA50
13Rated current breaking timestimes2000
14Mechanical lifetimes10000
15Permitted wear-thickness of vacuum arc-quenching chamber contactmm2
16Manual operating torqueNm>200

Service Condition
1. The altitude does not exceed 1000m
2. The ambient air temperatrue: Max:+40°c, Min:-10°c
3. The relatire humidity of air daily average=95%, monthly average=90% (temperature:25°c)
4. The ambient air should not be obviously polluted by corrosivity and the flammability gas, etc
5. The working situation without frequent violent

Payment terms: 
1 30% T/T advance , the balance against to the copy B/L or LC at sigh 
2 The other specific issues can negorate.
3 Pls confirm the details with us before do the prepayment.
Packing information:
1 Wooden packing 
2 1pcs/per CTN 
3 G/N.W: 50/45kg
4 We can packing as your required,good looking design 
Why choose us:
1 ISO9001,SGS,Gold golden supplier 
2 Monthly Production Capacity -- 50000 Pcs 
3 All goods examined before delivery by 10 QC staff 
4 Prompt Reply Within 12 Hours 
5 8000 square meters work environment 
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