Solicitar presupuesto
Indique el equipo y los requisitos del proyecto. Si necesita ayuda para elegir un modelo, describa la aplicación.
¿Tiene planos o especificaciones? Envíelos a [email protected] con la referencia del proyecto.
Interruptor automático de vacío para exterior
Compare ZW32-12, ZW32-24 and ZW7-40.5 outdoor breakers by rated voltage, fault-interruption duty and installation interface. Start with the feeder study and the pole or bay drawing.
Electrical equipment assembly workshop
Outdoor vacuum circuit breakers
Compare the three breaker series
Compare voltage, current and fault-interruption duty for each complete model. Review installation and control requirements with its ratings.
ZW32-12 Outdoor Vacuum Circuit Breaker
ZW32-12 / OUTDOOR
12 kV outdoor feeder breaker. Specify fault duty, pole mounting and the control interface from the circuit drawing.
ZW32-24 Outdoor Vacuum Circuit Breaker
ZW32-24 / OUTDOOR
24 kV breaker with linked-post, operating-arm and red-mechanism configurations. Check current and breaking ratings together for the complete model.
ZW7-40.5 Outdoor Vacuum Circuit Breaker
ZW7-40.5 / OUTDOOR
40.5 kV breaker with enclosed-base, cabinet-base and open-frame configurations. Define the mounting and connection layout in the bay drawing.
Compare ZW32 and ZW7 breaker series
Select the voltage class, then confirm the current and breaking ratings together for the complete model. Match the selected configuration to its installation drawing.
Desplácese horizontalmente para ver todas las columnas.
| Punto de revisión | ZW32-12 | ZW32-24 | ZW7-40.5 |
|---|---|---|---|
| Tensión nominal | 12 kV | 24 kV | 40.5 kV |
| Rated current options | 630 A | 630 or 1250 A | 1250, 1600 or 2000 A |
| Short-circuit breaking options | 20 kA | 20 or 25 kA | 20, 25 or 31.5 kA |
| Configurations | Grey three-pole assemblies with operating arms. | Dark linked-post, grey operating-arm and red-mechanism forms. | Enclosed cabinet-base and exposed open-frame examples. |
| Installation drawing | Check support points, pole spacing, terminal positions and operating-arm clearance. | Match the selected mechanism package, terminal arrangement and support points. | Match the selected cabinet or frame, mounting base and primary connection clearances. |
ZW32 and ZW7 arrangements
Compare insulated-pole assemblies, mechanism bases and supporting frames. Match primary connections, mounting dimensions and the control interface to the installation.
ZW32-12
12 kV outdoor feeder breaker with three grey insulated poles, operating arms and a base assembly.
Mounting interfaces
Review support brackets, terminal direction and pole spacing in the mounting drawing.
Contexto del sitio
For outdoor distribution lines, pole-mounted stations and substation feeders, define the installation position and protection duty on the project single-line diagram.
Comprobaciones de instalación y selección.
- Provide the feeder single-line diagram and calculated fault level.
- Confirm pole support, primary terminals and clearances.
- Define control supply, close/open commands and auxiliary signals.
- Match a 630 A / 20 kA selection to its mounting and wiring drawings.
ZW32-24
24 kV outdoor breaker with dark linked-post, grey operating-arm and red-mechanism configurations.
Mounting interfaces
Specify external insulation, support height and terminal geometry for the selected mechanism and pole assembly before preparing the mounting layout.
Contexto del sitio
For outdoor distribution lines and pole-mounted or substation installations, coordinate control wiring and clearances with the selected arrangement.
Comprobaciones de instalación y selección.
- Provide system voltage, rated current and calculated fault level.
- Confirm the available 630 / 1250 A and 20 / 25 kA pairing for the full model.
- Send pole or bay dimensions and primary connection positions.
- Agree the mechanism, control wiring and auxiliary-signal interfaces.
ZW7-40.5
40.5 kV outdoor breaker with enclosed-base, cabinet-base and open-frame configurations.
Mounting interfaces
Define the base, supports and terminal locations in the installation drawing.
Contexto del sitio
For outdoor feeders and transformer bays, coordinate bay spacing, switching sequence, protection and service access in the primary design.
Comprobaciones de instalación y selección.
- Provide the bay single-line diagram and required switching sequence.
- Confirm the 1250 / 1600 / 2000 A and 20 / 25 / 31.5 kA pairing.
- Check foundation, terminal geometry and live-part clearances.
- Define relay, control supply and auxiliary-contact requirements.
Specify an outdoor breaker for your circuit
Start with the circuit duty, then confirm a complete ZW32 or ZW7 rating, the control interface and the installation drawings.
The single-line diagram and installation plan help define the breaker position and the required switching duty.
Establish the circuit duty
State the voltage class, normal current, calculated short-circuit current and switching role at the circuit position.
Confirm the complete rating
Compare ZW32-12, ZW32-24 and ZW7-40.5 by voltage class; verify the current and breaking ratings together on the selected model’s data sheet.
Define protection and control
Set out trip and close commands, control supply, auxiliary signals and the protection scheme’s interface with the offered mechanism.
Review mounting and documents
Check terminal geometry, supports, clearances and control wiring on the proposed drawings; list the required data sheet and test records.
Start with the circuit brief.
- Circuit single-line diagram and system voltage
- Normal current and calculated fault level
- Protection, control and signal requirements
- Pole or bay layout and primary connections
The mounting drawing should locate the mechanism, primary terminals and supports, with operating and service clearances.
The agreed circuit duty and configuration drawings provide a basis for assessing the proposed breaker.
Information for an outdoor breaker quotation
Provide the circuit duty, control scheme and installation drawing together. Identify fixed ratings and any configuration decisions still open.
A single-line diagram, protection schedule, control drawing and pole or frame layout help define the breaker package. For replacement work, include the existing nameplate and connection measurements.
Circuit and ratings
- System and continuous current
- State system voltage, frequency, feeder duty and required continuous current.
- Fault and insulation duty
- Provide breaking, short-time and peak withstand requirements, fault duration and prescribed insulation levels.
Protección y control
- Protection inputs
- Give the relay scheme, sensing inputs, trip requirements and responsibility for protection coordination.
- Operating interfaces
- Specify operating supply, local or remote commands, auxiliary contacts and any controller or communication requirement.
Mounting and site
- Support and terminals
- Show pole or frame supports, phase spacing, conductor approach, terminal positions and operating access.
- Environmental conditions
- State ambient conditions, altitude and pollution or weather exposure for the selected installation.
Documents and supply
- Drawings and test records
- List the rated-data sheet, selected-unit outline, wiring diagram and test records required for project review.
- Quantity and package scope
- State quantity, destination and delivery needs. Identify which supports, controls, sensing devices and accessories to quote.
Outdoor breaker installation contexts
Review pole, frame and replacement interfaces together with the selected breaker ratings and protection scheme.
Pole feeder installations
A pole-mounted feeder installation needs the breaker, support and protection interfaces defined together.
Check conductor approach, support dimensions, terminal clearances and operating access. Specify the operating supply and relay or controller interface required by the network.
Outdoor frames and bays
A breaker selected for an outdoor bay must fit its supporting frame, primary connections and operating access.
Review base dimensions, phase spacing, cable or bus connections, service space and site conditions. Confirm the control wiring against the selected mechanism package.
Replacing an outdoor breaker
Confirm a replacement against the existing nameplate, installation measurements and control drawing before choosing the complete model.
Provide mounting centers, terminal positions, operating supply, relay inputs and auxiliary-contact requirements. Confirm current and breaking duty for the exact model designation.
Entornos de aplicación ilustrativos.
Questions about outdoor breakers
Ratings, control interfaces and installation details to confirm for the quoted breaker package.
Review the selected unit’s electrical schedule and installation drawings with the project requirements.
How do I shortlist ZW32-12, ZW32-24 and ZW7-40.5?
Start with the system voltage and required circuit duty. Confirm continuous current, breaking and withstand requirements together for the complete model, then review its insulation, installation and control interfaces.
Can any listed current and breaking options be combined?
Select continuous-current and breaking-duty ratings together for the complete breaker model. Use a combination confirmed by that model’s rated-data sheet.
Which control and protection equipment belongs in the package?
State the relay or controller, sensing inputs, operating supply, commands and auxiliary-contact requirements. Define the quoted controls, supports and accessories separately from equipment supplied by others.
How do the breaker configurations differ?
ZW32-24 configurations differ in pole housings and operating mechanisms. ZW7-40.5 arrangements use an enclosed base, a cabinet base or an open frame. Select the mechanism, primary connections and support layout with the required model rating.
What is needed to check a replacement breaker?
Provide the existing nameplate, mounting dimensions, phase spacing, terminal positions, operating supply and control drawing. Replacement compatibility depends on mounting, primary terminals and control wiring as well as the electrical ratings.
Which documents help prepare a quotation?
Send the single-line diagram, duty and protection schedule, pole or frame layout, control requirements and quantity. Identify the supply boundary and the data sheets, drawings and test records needed for project review.
Circuit Breaker & Protection Guides
View all resources-
Circuit Breaker vs Switch-Fuse Protection for Transformer Feeders: How to Choose
Use the same transformer feeder duty to compare a switch-fuse combination with a relay-controlled circuit breaker. See what the study and supplier…
-
Transformer Inrush Current: What to Confirm Before Protection Coordination
A worked example shows why a peak current, RMS measurement and successful no-trip replay cover different parts of a protection review.
-
Transformer Short-Circuit Withstand: What Evidence Should Buyers Request?
Use a fictional evidence review to check whether a transformer short-circuit test report covers the project duty and offered design.