ES 1 72.5kV - 145kV Group Operated Switch Catalog Flyer

Product catalog summary

Overview: The Southern States type ES-1 single side break switch is designed for subtransmission and distribution applications, offering reliability and low operating effort. It is versatile, easy to install, and suitable for various break switch applications.

Features:

Unique blade design with jaw end pivot for low operating effort.
No slam-in action required for contact seating, allowing for manual gear crank operation.
Suitable for horizontal upright, vertical, or underhung mounting.
Available with a variety of accessories.

Specifications:

Maximum Voltage Ratings: 72.5 kV – 145 kV.
Continuous Current Rating: 1200 A.
Jaw guide stop ensures proper contact seating.
Does not require dual speed motor operator for contact seating.
Can be equipped with standard arcing horns, whip type arcing horns, and loop splitting interrupters.
Square blade construction for rigidity and current carrying surface area.
4 hole NEMA tin plated copper terminal pads.
Maintenance-free bearings.

Applications:

Line disconnecting and sectionalizing.
Isolation and bypassing.
Line and cable dropping.
Magnetizing current interrupting and loop splitting.
Long line dropping.

Ratings:

Maximum Voltage Rating (kV): 72.5, 123, 145.
BIL (kV): 350, 550, 650.
Rated Power Frequency: 60 Hz.
Continuous Current: 1200 A.
Short-Time Symmetrical Withstand (3 Sec): 38 kA RMS.
Peak Withstand: 99 kA.
Ambient Temperature Rating: -40ºC to +50ºC standard, -50ºC optional.

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

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