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This compact, transformer-ready switcher safely interrupts TRVs and fits where breakers can’t.
The CSV circuit switcher, Southern States’ vertical interrupter design, commonly referred to as the “candlestick,” is a definite purpose switcher for transformer protection in space-constrained substations. Its vertical puffer style interrupters are optimized for handling the fast transient recovery voltages (TRVs) seen during transformer-limited faults, where general-purpose breakers may fall short.
With a compact footprint and simplified design, the CSV installs quickly and uses far less gas than dead tank breakers. It can also be specified with an integral Southern States disconnect switch — either a double sidebreak (CSV-DB) or center break (CSV-CB) — both available in manual or motorized configurations. Each unit ships mostly assembled and tested from the factory, with only minimal disassembly required to meet shipping constraints.
Choose voltage rating:
| Ratings Category | Ratings | |||||||
|---|---|---|---|---|---|---|---|---|
| Maximum kV Rating | 27 | 38 | 38 | 48.3 | 72.5 | 38 | 48.3 | 72.5 |
| BIL (kV) | 150 | 200 | 200 | 250 | 350 | 200 | 250 | 350 |
| Continuous Current | 1200 A & 1600 A | 1200 A | 1200 A, 1600 A, 2000 A, 2500 A | |||||
| Primary Fault Interrupting | 25 kA | 25 kA (31 kA) * | 40 kA | |||||
| Secondary Thru-Fault Interrupting | 4 kA | 4 kA | 4 kA | |||||
| Interrupting Time | 3 Cycles | 5 Cycles | 3 Cycles | |||||
| Power Frequency | 50/60 Hz | 60 Hz | 60 Hz | |||||
| Short-Time Withstand | 25 kA (3 sec) | 50 kA (1 sec) | 50 kA (1 sec) | |||||
| Peak Withstand | 62.5 kA | 130 kA | 130 kA | |||||
| Short-Circuit Making | 25 kA | 40 kA | 40 kA | |||||
| Insulator Design | Porcelain | Composite | Porcelain | |||||
| Ambient Temperature Range | -40º C to +50º C | -40º C to +50º C (-50º C to +50º C Optional)** | -30º C to +50º C | |||||
| Ratings Category | Ratings | ||||
|---|---|---|---|---|---|
| Maximum kV Rating | 48.3 | 72.5 | 123 | 145 | 170 |
| Interrupter/Blade BIL (kV) | 250 | 350 | 550 | 650 | 750 |
| Continuous Current | 1200 A,1600 A, 2000 A, 3000 A, 4000 A * | ||||
| Primary Fault Interrupting | 25 kA, 31.5 kA, 40 kA | ||||
| Secondary Thru-Fault Interrupting | 4 kA | ||||
| Interrupting Time | 3 Cycles | ||||
| Power Frequency | 60 Hz | ||||
| Short-Time Withstand | 50 kA (3 sec) | ||||
| Peak Withstand | 130 kA | ||||
| Short-Circuit Making | 50 kA | ||||
| Insulator Design | Porcelain | ||||
| Ambient Temperature Range | -40º C to +50º C (-50º C to +50º C Optional)** | ||||
| Ratings Category | Ratings |
|---|---|
| Maximum Voltage Rating | 245 kV |
| Interrupter/Blade BIL | 900 kV |
| Continuous Current | 1600 A * |
| Mechanism | MEPPI BM-2 |
| Power Frequency | 60 Hz |
| Short-Time Withstand Current & Short Circuit Making Current | 63 kA, 1 sec |
| Primary Fault Interrupting | 40 kA |
| Transformer Limited Fault | 4.2 kA |
| Interrupting Time | 3 Cycles |
| Duty Cycle | O – 0.3 sec – CO – 15 sec – CO |
| Creepage Distance | 6530 mm / 257.1 in |
| IEC Pollution Class | IEEE Heavy |
| Ambient Temperature Range | -35º C to +50º C |
| Ratings Category | Ratings | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Maximum kV Rating | 72.5 | 123 | 145 | 170 | |||||
| Interrupter/Blade BIL (kV) | 350 | 550 | 650 | 750 | |||||
| Continuous Current | 2000 A, 3000 A, 4000 A* | ||||||||
| Power Frequency | 60 Hz | ||||||||
| Short-Time Withstand | 50 kA (3 sec) | ||||||||
| Peak Withstand | 130 kA | ||||||||
| Insulator Design | Porcelain | ||||||||
| Ambient Temperature Range | -40º C to +50º C (-50º C to +50º C Optional)** | ||||||||
Circuit Switcher Ratings | |||||||||
| Primary Fault Interrupting | 25 kA, 31.5 kA, 40 kA | ||||||||
| Secondary Thru-Fault Interrupting | 4 kA | ||||||||
| Interrupting Time | 3 Cycles | ||||||||
| Short-Circuit Making | 50 kA | ||||||||
