ZW20-12/630-20 Vacuum Circuit Breaker

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Overview

Vacuum circuit breaker

ZW20-12/630-20 Vacuum Circuit Breaker for Medium-Voltage Switching

ZW20-12/630-20 Vacuum Circuit Breaker is presented for medium-voltage switching and protection projects. The authenticated supplier source provides product-specific construction notes and technical rows where published; use the exact model and installation duty for final selection.

Product family: Vacuum switching
Installation duty: Medium voltage
Model reference: ZW20-12/630-20
Final rating: Confirm by drawing

The page keeps the supplier’s model identity and source tables where available. Confirm the applicable IEC/GB standard, rated voltage, current, breaking capacity and project acceptance documents before ordering.

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Published technical data

ZW20-12/630-20 Vacuum Circuit Breaker Technical Parameters

Use the source data below as the starting point for engineering review. Keep voltage class, continuous current, short-circuit duty, operating mechanism and installation environment together when selecting a breaker.

Published source table 1

No	Descriptions	unit	Standard parameter values
1.1	Vacuum Circuit Breaker
1.1.1	Model No			ZW20-12
1.1.2	Switching structure	Transformer form		External or internal
Insulating Material		A:Epoxy resin outsourced silicone rubber
B:Outdoor epoxy resin
1.1.3	Insulating and extinguishing media		SF6, Vacuum
1.1.4	Rated Voltage	kV	12
1.1.5	Rated Current	A	630
1.1.6	Rated cable charging and breaking current	A	20
1.1.7	Rated short-circuit breaking current	kA	12.5, 16, 20
1.1.8	Temperature rise test current		1.1Ir
1.1.9	Rated frequency 1 min withstand voltage	To earth/Between	kV	42
Across the base	kV	48
1.1.10	Rated lightning impulse withstand voltage(1.2/50μs)Peak value	To earth/Between	kV	75
Across the base	kV	85
1.1.11	Rated short-time withstand current and duration	kA/s	20/3
1.1.12	Rated peak withstand current	kA	50
1.1.13	Rated short-circuit breaking current	kA	20
1.1.14	Rated short-circuit closing current	kA	50
1.1.15	Main circuit resistance	μΩ	80
1.1.16	Mechanical stability	times	≥10000 No load
1.1.17	Minimum creepage distance for external insulation	mm	372
1.1.18	Rated short-circuit breaking current breaking times	times	≥30times
1.1.19	Closing and opening not synchronized	ms	≤2
1.1.20	Contact closing bounce time	ms	≤2
1.1.21	Partial discharge（1.1Ur）	pC	≤20
1.2	Operating Mechanism
1.2.1	Type or model of actuator		Spring or permanent magnet mechanism
1.2.2	Operating Method		Motorized with manual operation
1.2.3	Motor Voltage	V	Conventional DC220
1.2.4	Auxiliary contact capacity		DC24V、10A
1.2.5	DC resistance of telecommunication circuit		After 100times operations＜1Ω
1.3	Transformer combination mode		Includes current transformers, electronic zero sequence voltage transformers, and electromagnetic voltage transformers or other models..
1.4	Current Transformer
1.4.1	Rated current ratio		(1) Phase current: 600A/5A (2) Zero sequence current: 100A/1A
1.4.2	Accuracy Level		(1) phase current: protection class 5P10 (2) Zero sequence current: use 100A/1A Protection Class 10P30.
1.4.3	Implementation method		Electromagnetic
1.4.4	Temperature range		-40℃～70℃
1.5	Electromagnetic voltage transformers
1.5.1	Rated Voltage Ratio		Zero sequence voltage: (10kV/)/( 6.5V/3)
1.5.2	Accuracy Level		Zero sequence voltage: 3P level
1.5.3	Temperature range		-40℃~70℃
1.5.4	Partial discharge	Pc	≤20 (1.1Um)
1.5.5	Load Impedance		≥2MΩ
1.6	Electromagnetic voltage transformers (external)
1.6.1	Quantities	Pc	1 or 2 optional
1.6.2	Rated Voltage Ratio		Line voltage measurement: 10kV/0.1kV Supply voltage: 10kV/0.22kV
1.6.3	Accuracy level		Measuring voltage winding: 0.5 level Supply voltage winding: 3 levels
1.6.4	Capacity (VA)		Measuring voltage winding: ≥10VA Supply voltage winding: long-term capacity ≥ 50VA, short-time capacity ≥ 300VA/30s
1.7	Mechanical property
1.7.1	contact opening distance	mm	9±1
1.7.2	contact overtravel	mm	3.5±0.5
1.7.3	Average closing speed	m/s	0.4-0.8
1.7.4	Average gate opening speed	m/s	1.0-1.4
1.7.5	Closing time	mm	≤60
1.7.6	Split time	Ms	≤ 45
1.7.7	Closing Bounce Time	Ms	≤2
1.7.8	Three-phase switching non-synchronous	Ms	≤2
1.7.9	Interphase center distance	mm	280 ±1.5
1.8	Enclosure protection class		Not less than IP65
1.10	Box Material		304 or hot rolled steel	Support for surface treatment
1.11	Secondary equipment
1.11.1	Intelligent Control Terminal		Support remote local, three protection, three remote, reclosing, SOE, can also be equipped with the statute of the communication connection backstage real-time monitoring, adjusting, issuing fixed value and other configurations, other requirements to inform when ordering	One or two times are connected by aviation plug-in, without external wiring.

Values shown are transcribed from the target listing where the authenticated source publishes them. Confirm the exact model row, unit, test condition and revision before using any value in a purchase specification.

Selection checklist

Specify the Vacuum Circuit Breaker for the Network

Define the electrical duty. State rated voltage, continuous current, frequency, short-circuit breaking current, making current and insulation levels.
Choose the construction. Confirm outdoor or indoor installation, common-box or pole-mounted arrangement, vacuum interrupter and insulation medium.
Match the operating mechanism. Specify manual, motor or stored-energy operation, trip/close coil voltage, auxiliary contacts and control interface.
Check the site environment. Provide altitude, ambient temperature, humidity, pollution, wind, seismic and enclosure requirements.
List documents and quantity. Include drawings, wiring diagram, routine-test evidence, packing, destination market and delivery requirements in the RFQ.

Configuration and supply boundary

Review the ZW20-12/630-20 Configuration

The supplier listing identifies a vacuum-circuit-breaker model family. State the exact model code and switching arrangement so the quotation does not mix ratings or accessories from another series.

Electrical parameters

Confirm rated voltage, current, frequency, short-circuit duty, insulation levels and operating sequence.

Mechanism and controls

Specify stored-energy mechanism, motor and coil voltages, auxiliary contacts, interlocks and local/remote control.

Structure and environment

Confirm pole arrangement, insulation housing, enclosure, altitude, temperature, pollution and installation interface.

Commercial boundary

Quantity, packing, delivery schedule, private label and project documents remain subject to technical review and quotation.

Company scale

Fuerte at a Glance

FUERTE lists 1985 as its founding year, 220+ employees and a 36,000 m² built-up area. These supplier-published figures provide context for manufacturing and project support.

1985

Founded in

Supplier-published company history

220+

Employees

Published workforce scale

36,000 m²

Built-up area

Published manufacturing footprint

OEM

& ODM support

Subject to technical review

OEM & ODM capability

Custom Support for Vacuum-Breaker Projects

FUERTE’s published OEM and ODM scope includes voltage/current adaptation, mounting hardware, nameplates, packaging and shipping marks.

Electrical configurationReview voltage class, current rating, insulation levels and service conditions.
Mechanical interfaceConfirm pole structure, operating mechanism, fittings and mounting dimensions.
Project documentationState drawings, wiring, marking, packing, shipping marks and acceptance-document requirements before quotation.

Frequently asked questions

ZW20-12/630-20 Vacuum Circuit Breaker FAQ

Which values should be matched first?

Start with rated voltage, continuous current, short-circuit breaking capacity, insulation levels, operating sequence and installation environment.

Are ratings interchangeable between vacuum-breaker series?

No. Confirm the exact model code and source table. Do not transfer ratings, dimensions or accessories from a similar-looking series.

Can the controls and fittings be customized?

FUERTE publishes adaptation of mounting hardware and project specifications as an OEM/ODM scope. Availability depends on technical review.

What should be included in a quote request?

State model, rated voltage, current, breaking duty, mechanism and coil voltages, mounting interface, quantity, destination and required documents.

Configuration review

Send the ZW20-12/630-20 Requirements

Provide rated voltage, current, breaking duty, insulation levels, mechanism, dimensions, mounting details, quantity, destination market and required documents.

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