ll LS Electric UL-certified Vacuum Circuit Breakers (VCBs) including the UVL, UVM, and UVH models are rated for C2 class capacitive current switching as per IEEE Std C37.09.

This means the breakers are designed and tested to safely switch capacitor bank loads, such as those used for power factor correction or harmonic filtering, without restrike.

What is C2 Class?
IEEE C37.09 defines C2 as the performance class for circuit breakers that are capable of interrupting capacitor load currents under the most severe conditions, including:

• Proper arc extinction

• Prevention of re-ignition or restrike

• Capacitor Load Current Switching Capability: approximately 400A to 600A, depending on system conditions

This rating ensures that LS Electric VCBs can be reliably used in systems where capacitor banks are connected and disconnected frequently.

*UVM-Type(15kV)