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Knee-type (OH)

Products > Disconnectors

The knee-type disconnector consists of one articulated arm which, by moving “horizontally” on the plane of the insulators, closes the circuit on a fixed contact located on the side insulator.

Since the movement of the arm takes place on the same plane as that of the insulators, the phase-to-phase spacing is minimized.

Compared to the vertical-break disconnector (SLOB), the dimensions of the knee-type model in open position are reduced, thus allowing for top metal structures (if any) to be placed at lower heights.

Rated voltage: 245 - 800 kV

Rated continuous current: up to 6300 A

Rated short-time withstand current: up to 75 kA (3 s)


OH 245-800 kV 
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Owing to the constant development of our products, the information included in the brochure might be not fully up-to-date.