VS1-12 vacuum circuit breaker for indoor medium-voltage switchgear
12 kV indoor switchgear protection

VS1 Vacuum Circuit Breaker

Compare VS1-12 rated data, withdrawable handcart dimensions, primary-contact interfaces, control requirements, and RFQ inputs for indoor medium-voltage switchgear.

Configuration scope

VS1 vacuum circuit breaker configuration

This page covers the withdrawable handcart arrangement. Use the rating table, dimension drawing, cabinet interface, and control requirements together when defining the order configuration.

VS1-12 Technical Data

Compare the available VS1-12 rating options, then coordinate the withdrawable truck and cabinet interface shown in the dimension drawing.

VS1-12 rated data12 kV / 50 Hz withdrawable type
Technical parameter Value or selection option
Configuration VS1-12 indoor three-phase AC vacuum circuit breaker
Rated voltage / frequency 12 kV / 50 Hz
Power-frequency withstand voltage (1 min) 42 / 48 kV — select for the required insulation configuration
Lightning impulse withstand voltage (peak) 75 / 85 kV — select for the required insulation configuration
Rated current options 630 / 1250 / 1600 / 2000 / 2500 A
Rated short-circuit breaking current 20 / 25 / 31.5 / 40 kA
Rated short-time withstand current 20 / 25 / 31.5 / 40 kA
Rated peak withstand current 50 / 63 / 80 / 100 kA
Rated short-circuit making current 50 / 63 / 80 / 100 kA
Rated short-circuit duration 4 s
Secondary-circuit withstand voltage (1 min) 2000 V
Rated operating sequence O – 0.3 s – CO – 180 s – CO
Control-voltage options DC 110 / 220 V or AC 110 / 220 V — match the selected mechanism
Operating endurance Confirm the required mechanical endurance and duty for the selected mechanism
Dimensional DrawingWithdrawable indoor type

Use the view-specific dimensions to coordinate the handcart, cabinet, primary-contact position, pole spacing, mounting holes, and available clearances. Include the selected panel drawing with the RFQ for final interface coordination.

Indoor Vacuum Circuit Breaker

VS1 Construction and Application

Review the withdrawable breaker construction, typical 12 kV switchgear duties, and the mechanical and electrical interfaces that define the order configuration.

VS1-12 withdrawable vacuum circuit breaker product view
VS1-12 withdrawable handcart configuration. Match the breaker, truck frame, primary contacts, panel interface, mechanism, and control circuit to the project.

Engineering Characteristics

Withdrawable handcart arrangement

The breaker body can be combined with a propulsion mechanism to form a withdrawable handcart unit for indoor metal-clad switchgear.

Spring operating mechanism and interlocking

Confirm the closing and tripping control voltage, motor/manual charging arrangement, auxiliary contacts, and applicable mechanical or electrical interlocks.

Typical switchgear applications

Use the selected VS1 configuration for protection and control duties in 12 kV distribution switchgear, including feeder and transformer applications.

Switchgear interface

Confirm the truck frame, primary contact interface, pole spacing, available clearances, and interlocking scheme.

Rated duty

Match voltage, current, insulation level, short-circuit duty, and operating sequence to the selected project requirement.

Control circuit

Confirm the selected control voltage, terminal wiring, auxiliary contacts, and required protection or monitoring interface.

Technical FAQ

VS1-12 Technical FAQ

Use the rating table, dimension drawing, switchgear interface, and operating requirements together when preparing a VS1-12 enquiry.

Which VS1 configuration is covered on this page?

The technical table and dimension drawing cover a VS1-12 withdrawable indoor vacuum circuit breaker at 12 kV and 50 Hz. For a fixed installation or another voltage class, include that requirement in the RFQ.

How should the VS1-12 dimension drawing be used?

Use the front and side-view dimensions to coordinate the truck frame, cabinet interface, primary-contact position, pole spacing, mounting holes, and available clearances. The individual callouts are not one overall width-by-depth-by-height value.

Which ratings must be selected for a VS1-12 quotation?

State the rated current, short-circuit breaking current, short-time and peak withstand duty, insulation level, operating sequence, and control voltage required by the switchgear project.

What information should be sent with a VS1 vacuum circuit breaker RFQ?

Send the switchgear general arrangement, handcart and primary-contact interface, mounting dimensions, control circuit and interlock requirements, quantity, destination, and available nameplate or site photographs.

Technical inquiry

VS1-12 Project Review

Send the selected ratings, cabinet and handcart interface, primary-contact arrangement, mechanism and control requirements, quantity, destination, and project drawings for a VS1-12 quotation.

Include with your inquiry

Rating and fault dutyCabinet and handcart interfacePrimary contact and pole spacingControl voltage, auxiliary contacts, and interlocksQuantity and delivery destinationDrawings, nameplate, or site photos

Send VS1-12 RFQ