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Trident®-SP is a single phase, spring-assisted load break or fault interrupting switch. It provides fault protection through vacuum interrupters with integral current transformers and overcurrent control options. Both vertical or horizontal mounting options are available.

Features and Benefits

  • Construction – Available compact construction with front accessible switch operators and bushings, front and back accessible switch operators and bushings, or front access to operators and rear access to bushings.
  • Fault Interrupting – Fault Interrupting – Three phase fault interrupting up to 12.5kA.
  • SafeVu Visible Break – Available with an innovative visible break built into the switch, which eliminates the need to remove elbows or use externally mounted components to provide a visible open.
  • Self Powered Protection – G&W Electric Type VI controls are self-powered by the fully encapsulated current sensors in the Trident. Standard industry curves including fuse emulation curves for overcurrent and ground fault protection.
  • Automation – Available for motor automation with mounted or portable control. A variety of relays such as SEL, ABB, and GE are available with G&W Electric programming and cabinet construction. Cabinets can be ordered in a low voltage enclosure for padmount, and pedestal, wall mount or IP68 rated submersible for vault installed switchgear. Programming for automatic source transfer, protection, or LaZer custom solutions are available.

Ratings Chart for Trident Spring-operated Switchgear

Voltage Class (kV)152535*
Max. System Voltage (kV)15.5‡27†38
BIL (kV)110125150
Continuous Current (A)630§630§630§
Load Break Current (A)630§630§630§
AC Withstand, 1 min. (kV)356070
AC Withstand, Productions, 1 min. (kV) 344050
DC Withstand, 15 min.5378103
Momentary Current, RMS, Asym (kA) 20**2020
Fault Close 3 Times, Asym (kA) 20**2020
Current, Sym (kA), 1 Sec. 12.5**12.512.5
Fault Interrupting Current, Sym (kA)12.5**12.512.5
Vacuum Interrupter Mechanical Operations2,0002,0002,000
§ Up to 900A available on In/Out ; Up to 800A available on non-SafeVu multiway Trident
* 35kV not applicable for Trident-SP
† Models available up to 29.3kV
‡ Trident-S with SafeVu feature limited to 95kV BIL for 15kV
** 16kA available upon request up to 15.5kV with 25.6kA asym. Momentary Current and Fault Close