27kV Single-Phase Hookstick Knife Switch
A 27kV single-phase hookstick-operated knife switch for manual operation from ground level in utility substations. The hookstick design allows pole-top disengagement for safe circuit isolation above 1,000V. Meets HTS 8535.30.00.40 criteria for knife-style make-and-break switching.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If automatic operation without manual knife mechanism
Motor-operated disconnects without knife blades classify as automatic switches.
If for control panels including multiple knife switches
Assembled into boards or panels for voltage >1,000V shifts to heading 8537.
If functioning primarily as protective fuses
Devices combining switching with overcurrent protection classify under fuses.
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Import Tips & Compliance
• Provide IEEE Std C37.20.4 test reports proving >1,000V rating to avoid reclassification
• Label with exact voltage and BIL (Basic Impulse Level) ratings; pitfall is incomplete technical specs
• Check for hookstick interoperability standards in import docs for utility compliance
Related Products under HTS 8535.30.00.40
15kV Gang-Operated Air Break Knife Switch
A high-voltage gang-operated air break knife switch rated for 15kV used in overhead power distribution lines to isolate sections of the circuit. It features multiple blades that open and close simultaneously for safe make-and-break operations exceeding 1,000V. Classified under HTS 8535.30.00.40 as a knife switch for electrical circuit isolation.
5kV Three-Phase Side-Break Knife Switch
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38kV Vertical-Break Center-Rotating Knife Switch
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7.2kV Double-Break Gang Knife Switch
7.2kV double-break gang-operated knife switch providing two interruption points per phase for enhanced safety. Used in industrial substations for reliable isolation above 1,000V. Precise HTS 8535.30.00.40 classification for knife switches.
12kV Oil-Immersed Knife Switch
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24kV Hook-Operated Distribution Knife Switch
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