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Double End-Break Switch

138 kV Double End Break, Vertically Mounted, Type D

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Type: D

Insulator Profile: Parallel or Vee Configuration

Orientation: Horizontal Upright, Vertical, Underhung
Voltage: 34.5 - 230 KV

Current: 600, 1200, and 2000 Ampere

A three insulator, group operated, side-opening, air-break disconnect switch, with a single center rotating insulator per phase for operation. 

Comparable to a vertical break and often used as a substitute where there are overhead clearance problems.  Has the same phase spacing requirements as a vertical break.  

Frequently used for line disconnecting, isolating and by-passing breakers and transformers, bus sectionalizing, and isolating arrestors, metering equipment, and other apparatus.  Can be either pole or substation structure mounted.  

Features & Benefits
Minimal phase spacing reduces structure size and weight

Excellent ice breaking characteristics

Horizontal break minimizes overhead clearance issues

Horizontal break aligns with substation bus in low profile substations to maintain desired appearance

Lower cost compared to vertical breaks

Additional Information

Ratings/Catalog Numbers

Dimensional Data (34.5 - 69 kV)

Dimensional Data (115 - 230 kV)

Construction Details

Product Specifications (*PDF 49 KB)

Order Specification Checklist (*PDF 46 KB)

Catalog Cut-Sheet (*PDF 199 KB)

* The marketing materials listed above have been saved in Adobe® PDF format. To view them, you'll need Adobe's Acrobat® Reader software, available for free download at Adobe's website.

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Southern Electrical Equipment Company, Inc.