ZN103A-40.5 Vacuum Circuit BreakerDetailed product description：

The ZN103-40.5E indoor medium voltage AC vacuum circuit breaker is a new generation vacuum circuit breaker. The main circuit adopts a solid insulation structure and utilizes advanced epoxy sealing technology to organically combine the vacuum arc extinguishing chamber, main electrical circuit, insulation support, etc. into an integrated sealed pole for the first time, successfully solving the environmental tolerance problem of vacuum circuit breakers fundamentally. The integrated solid sealed pole adopts self convection ventilation technology, cleverly solving the problem of heat dissipation difficulties caused by solid insulation structures.

Features:

The main circuit and operating mechanism of the circuit breaker are arranged in an upper and lower structure, optimizing the electric field distribution, increasing insulation reliability, and reducing the size of the circuit breaker in the depth direction, resulting in a significant reduction in the depth of the switchgear.

The conductive part of the main circuit is integrated into the epoxy resin pole, which protects the arc extinguishing chamber from environmental and mechanical damage, and eliminates phase to phase and surface flashover of the circuit breaker, greatly improving the external insulation level of the circuit breaker.

The current carrying components are reliably fixed in their corresponding positions by epoxy resin poured around them, without the need for additional fasteners, reducing the number of parts for the circuit breaker pole, lowering assembly errors, and improving the reliability of installing circuit breakers.

Due to the adoption of sealing technology, the volume of the circuit breaker has been greatly reduced, and the equipped switchgear cabinet is 1200mm wide, 2400mm high, and 2600mm deep.

The ZN103 circuit breaker is a self-supporting structure based on the base plate, which completely overcomes the influence of the sinking of the circuit breaker on the engagement of the primary contact and is convenient for handling.