Catenoid disconnect switch 

　　►Product features

　　− Lightweight silicone insulator provides extra leakage distance and BIL ratings to ensure inline switches are not the flashoverpoint

　　− Self aligning silver-to-silver contacts to ensure long life

　　− Entire blade is silver-plated copper

　　− Loadbreak hooks made of galvanized steel for corrosion protection, to be used with loadbreak tool

　　− Standard two-pole NEMA plated pad or optional terminal connectors

　　− All testing is in accordance with IEEE 37.34 (consolidated into IEEE 37.30.1)

　　►Description

　　The catenoid disconnect is a hookstick-operated switch used to manually switch de-energized or parallel circuits of overhead distribution lines rated voltage15 kV, 110kV BIL. The ITD is installed directly in the line and is used to sectionalize the circuit. Switches are selected by continuous current and voltage ratings. The ITD is rated for 600A continuous current and 50 kA peak withstand current (40 kA momentary).

　　►Mounting configuration

　　►Operation

　　All ITD disconnect switches include loadbreak hooks. Use the appropriate loadbreak device to open the switch under load.The pull-ring can be utilized for easy opening and ice breaking. The hook portion of the contact-casting matches the blade latch for positive closure.

　　►Blade operation

　　A blade stop limits the blade range of motion to the 90° and 160° positions, and a latch prevents the switch from opening under high momentary current.

　　►Technical parameter table

　　►Outline drawing

　　►Disconnect tool

　　Disconnect switch can cut off load current by disconnect tool.