Vaccum interrupter for VD4

Vacuum Interrupter for VCBs

Product Description:

A Vacuum Interrupter is the core component of a Vacuum Circuit Breaker (VCB), responsible for interrupting current flow and extinguishing the arc during circuit breaking operations. It operates by separating contacts in a vacuum environment, which prevents arc re-ignition and ensures fast, safe interruption of electrical faults.

Our vacuum interrupters are high-performance, long-life components compatible with a wide range of medium-voltage switchgear systems, including ABB, CG, Siemens, Schneider, L&T, and others.

Key Features:

• Rated Voltage: 11kV / 22kV / 33kV

• Rated Current: 630A to 2500A

• Breaking Capacity: Up to 31.5 kA

• Interruption Medium: Vacuum (no arc re-ignition)

• Contact Material: CuCr alloy for high conductivity and wear resistance

• Mechanical Life: Over 10,000 operations

• Applications: Indoor & Outdoor VCBs, Ring Main Units (RMUs), Reclosers, etc.

Frequently Asked Questions (FAQs)

Q1. What is a vacuum interrupter?
A vacuum interrupter is a sealed component inside a VCB that opens and closes electrical contacts within a vacuum chamber, safely interrupting high-voltage currents without arc damage.

Q2. Where is it used?
It is used in medium-voltage switchgear, particularly in VCBs, RMUs, and reclosers, across industries like power distribution, substations, and factories.

Q3. How long does a vacuum interrupter last?
Typically, it lasts for 10,000 to 30,000 mechanical operations, depending on the model and load type. Regular inspection ensures a longer service life.

Q4. Can I replace only the vacuum interrupter in my breaker?
Yes. If your VCBs interrupter is damaged or degraded, it can be replaced individually, saving the cost of a full breaker replacement. We also provide servicing and retrofitting support.

Q5. How do I identify the correct interrupter?
Provide details like make, model number, current & voltage rating, or share a photo or nameplate. We offer compatible interrupters for ABB, CG, Siemens, and others.

Q6. Do you offer testing and replacement services?
Yes. We provide on-site testing, contact resistance measurement, insulation tests, and replacement of faulty interrupters along with complete VCB servicing.