Zhejiang, China
Business Type:
Group Corporation
Number of Employees:
Year of Establishment:
Management System Certification:
ISO9001:2008, ISO14001:2004, OHSAS18001:2007
OEM/ODM Availability:
OEM/ODM Service
Sample Available
MEI Awards

High Voltage AC Vacuum Load Switch, 40.5kv AC Vacuum Load Break Switch, 40.5kv Outdoor Disconnector Switch manufacturer / supplier in China, offering 40.5kv Outdoor AC Vacuum Isolation Load Switch, 50/60Hz High Performance VFD Rdi67, Cjx2 Series AC Contactor with High Quality and so on.

Diamond Member Since 2005
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Supplier Homepage Products Load switch 40.5kv Outdoor AC Vacuum Isolation Load Switch

40.5kv Outdoor AC Vacuum Isolation Load Switch

Min. Order / Reference FOB Price
1 Piece US $4,355.5-6,612.5/ Piece
Port: Ningbo, China
Production Capacity: 1, 000 Sets/Per Month
Payment Terms: L/C, T/T
Type: High-voltage
Structure: Three-column Disconnector
Installation: Indoor High-voltage
Operation: Electric, Manual Type
Grounding Mode: Grounding
Number of Poles: Three Pole

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Basic Info.

Model NO.
Switching Mode
Single Throw-in
Structure of Operating
Rated Voltage
Rated Frequency
Rated Current
Customized Design
Rated Short-Circuit Duration
Mechanical Life
> 10000 Times
Transport Package
Standard Export Packing
Wenzhou, Zhejiang, Cn
HS Code

FZW32-405 series high voltage AC Vacuum load switch is applied in the three-phase, AC50Hz, rated voltage up to 40.5KV, rated current 1250A  electric-supplying network. Mainly applied in three-phase RMU net pr ending electric-supply city distribution station and industrial electrical equipments, with load-control and short-circuit protection.

The load switch can match relative manual operation mechanism or electrica motor operation mechanism.

Altitude: below 3000m
Air temperature maximum is +40ºC, minimum is -30ºC.
Relative temperature: diary average ≤95%, monthly average ≤90%
No frequent shrink shock.


1. Vacuum arc blow out, no explosive danger, no need to inspect
2. Isolation knife switch are interactive to three-phase vacuum  arc extinguish chamber, obvious fracture exists when breaking.
3. Component parts all adopt stainless steel material, bottom bracket adopts stainless steel material or carbon steel material of hot-galvanized with UV protection coating  To ensure device normally run in outdoor environment.
4. Strong breaking capacity, safety, reliable, long electrical life, frequent operation.
5. Widely used in rural network, city network, reconstruction of rail distribution wires 

Rated Voltage 40.5KV
Rated Current1250A
Rate Frequecy50Hz
Rated active power load breaking current1250A
5% rated active power load breaking current62.5A
Rated cable charging breaking current25A
Power frequency withstand voltage(1min)arc extinguishing chamber fracture:68KV
phase, to earth: 95KV; isolation fracture: 110KV
lightning impluse withstand voltage(peak)phase, to earth: 185KV; isolation fracture: 215KV
Rated short-time withstand current(Moving reliable current)25KA
Rated short-circuit duration4s
Rated peak withstand current(Moving reliable current)63KA
Rated short-circuit closing current63KA
Manual operation moment≤300N.m
Mechanism life10000 times
Rated active power load current breaking times>100 times
Vacuum extingushing chamber conact admitted  wearing thickness0.6mm
Earthing knife switch mechanical life2000 times
Earthing knife switch moving rereliability 40KA

Vacuum arc-extinguish chamber 
Contact open clearnce13±1mm
Average breaking speed1.4±0.2m/s
Three phases closing synchronization≤5ms
Three phases breaking synchronizaton≤2ms
air clearance between charged bodies and to earth >420mm
Auxiliary circle resistance400μΩ ≤ R ≤ 1000μΩ 
Isolation knife switch pressure500±50N
Inlet outlet ends resistance≤150μΩ
Contact knife final leaving point to static contacts distance small fracture/big fracture≥180/420mm

Packing and shipping
-- Wooden box for products.
-- Shipping mark according to customer's request.
-- Bulk production will be deliveried by sea and air.
40.5kv Outdoor AC Vacuum Isolation Load Switch

Our Service
-- We have our own factory, professional manufacturer
-- We can send you samples within one week.
-- We do OEM & ODM services .
-- We control quality strictly, quality problem: 100% compensation or change
Warmly welcome to visit our factory. Welcome customer or your agent to inspect before order or lading.
40.5kv Outdoor AC Vacuum Isolation Load Switch


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