The most versatile and capable Horizontal Interrupter Circuit Switchers in the marketplace today.
Designs are available with an integral vertical break switch (Types CSH-B or CSH2-B) or without (Types CSH or CSH2) and are extremely versatile, as they can be mounted in most orientations including horizontal upright and vertical. In addition, they can be designed to mount on a customer or Southern States supplied support structure as well as existing structures.
The CSH(2)-B is ideal for mobile applications with a rating up to 40kA. The use of composite interrupters will allow for pressurized transport without special protective housing.
- Makes and breaks circuit in SF6 – No open air arcs
- Available with and without vertical break disconnect
- Visual dielectric indication
- Can be shipped pressurized when composite housing is specified or protective shields for porcelain housing are utilized
- Adaptable to a wide variety of mounting positions, structure heights, and phase spacings
- Ideally suited to upgrade fault interrupting capability of existing horizontal circuit switchers, disconnect switches, and power fuses, reusing the existing structure and foundation.
| BLADE BIL RATINGS (FOR CSH-B) | ||||||
| Max Voltage | 38 kV | 48.3 kV | 72.5 kV | 123 kV | 145 kV | 170 kV |
| Blade BIL | 200 kV | 250 kV | 350 kV | 550 kV | 650 kV | 750 kV |
| 550 kV BIL INTERRUPTER RATINGS* | |||
| Temp Range1 | ≤ 72.5 kV | 123 kV | |
| PBF 100s | -30° C to +50° C | 20 kA | |
| -40° C to +50° C | 25 kA | ||
| -50° C to +40° C | 15 kA 5 | 12 kA 5 | |
| TLF | -40° C to +50° C | 4 kA | 2.9 kA 2 |
| -50° C to +40° C | 2.5 kA 5 | 1.7kA 5 | |
- Ratings shown are for 1200A. For 1600A, top temp is +40°C.
- Nameplate will include note “TLF = 4 kA @ 7.6 kV/µs TRV”
- Ratings do not apply to 2000A.
- Ratings apply to both porcelain and composite interrupter housings
- SF6 / N2 Gas Mixture
- All ratings are suitable for ungrounded systems (1.5 kpp)
| 750 kV BIL INTERRUPTER RATINGS* | |||||
| Temp Range | ≤ 72.5 kV | 123 kV | 145 kV*** | 170 kV 6 | |
| PBF 100s | -40° C to +50° C | 25 kA | 20 kA 3 | ||
| -50° C to +40° C | 15 kA 7 | 12 kA 7 | |||
| TLF** | -40° C to +50° C | 4 kA | 2.9 kA 2 | 2.3 kA 2 | 2.7 kA 2 |
| -50° C to +40° C | 2.5 kA 7 | 1.7 kA 7 | 1.4 kA 7 | 1.6 kA 7 | |
- Ratings shown are for 1200A. For 1600A, top temp is +40°C.
- Nameplate will include note “TLF = 4 kA @ 7.6 kV/µs TRV”
- The 123 kV can also be rated 25 kA for -30°C to +50°C. Existing installation only. If 25 kA is specified for a new installation, the CSH2 design should be utilized.
- Ratings do not apply to 2000A.
- Ratings apply to both porcelain and composite interrupter housings
- 170 kV ratings are for grounded systems (1.3kpp)
- SF6 / N2 Gas Mixture
Application Guide
Catalog Flyers & Bulletins
Circuit Switcher Bulletin
CSH CSH-B 38kV-170kV Catalog Flyer (Descargar versión en español)
CSH2 CSH2-B 38kV-145kV Catalog Flyer
CSH CSH-B 245kV Catalog Flyer (Descargar versión en español)
CSH CSH-B 245kV Product Bulletin
CM-4AE Motor Operator Catalog Flyer
General Information
Transformer Switching & Protection Considerations
Control Wire Sizing Recommnedations for CSH & CSH-B
Finepoint Circuit Breaker Test & Maintenance Conference 2008 – Local, Series- Connected Interrupters Enhance System Reliability
A Circuit Switcher In Record Time
Circuit Switcher Upgrade Installation Using Existing Support Structure
Standard & Available Optional Features for CM-4AE Motor Operator
Specification Guides & Drawings
CSH & CSH-B Circuit Switcher Current Draw Info, Duration, & Sequence of Occurrence
Horizontal Circuit Switcher Product Specification Guide (Download Word Document)
