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TFI Load Break & Fault Interrupting Switchgear
G&W Electric model TFI padmount switches include load break and fault interrupting capability. The load break switch features visible break and integral ground position. The integral ground position eliminates the need to handle any high voltage connections to ground the cable connected to the load break ways. The fault interrupters provide electronically controlled, resettable over current protection in a totally sealed, dead front device. The switches are designed for use on 3-phase systems with voltages up to 27kV, 630A load break, and continuous current, and 12.5kA symmetrical fault interrupting ratings. They feature compact footprints due to their front access construction.
The switches are designed to IEEE C37.72, C37.74, and C37.60 for load break and fault interrupting capability. Padmount enclosures are designed and tested to IEEE C57.12.28 and C57.12.29. Learn more about how TFI padmount switches contribute to our advanced switchgear solutions, providing space-saving and reliable power distribution options.
Features and Benefits
Construction – Available compact construction with front accessible switch operators and bushings. Vault construction is also available with top access to operators and bushings.
Fault Interrupting – Three phase fault interrupting up to 12.5kA with selectable industry curves including fuse emulation curves.
Voltage Sensing – Load break ways are available with integral voltage sensing for use with voltage indication panel to determine in-phase condition or for use with a relay with up to 1% accuracy.
Visible Break – Load break ways are equipped with visible break to view the open, closed, and ground positions
Ground Position – Integral ground position on load break ways to eliminate the need to handle high voltage components to ground the cable.
Automation – Available for motor automation with portable or permanently mounted motor and controls. 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, pedestal or IP68 rated submersible for vault installed switchgear. Programming for automatic source transfer, protection, or LaZer custom solutions are available.
Configurations Chart for TFI
| # of Ways | One-line Diagram (Horizontal) | Voltage Class (kV) | Catalog Number | Approximate | |
| Width* in. (mm) | Wt. w/SF6 lbs (kg) | ||||
| 6F |  | 15 | TFI32-376-12-6F | 55.6 (1413) | 1350 (612) |
| 25 | TFI32-386-12-6F | ||||
| 9F |  | 15 | TFI42-376-12-9F | 68 (1727) | 2200 (1000) |
| 25 | TFI42-386-12-9F | ||||
| 52F |  | 15 | TFI52-376-12-52F | 76.1 (1934) | 2800 (1273) |
| 25 | TFI52-386-12-52F | ||||
| 62F |  | 15 | TFI62-376-12-62F | 95.2 (2417) | 3050 (1386) |
| 25 | TFI62-386-12-62F | 92 (2337) | |||
| Approximate enclosure height: 50″ (1270mm), Approximate depth: 55″ (1307) | |||||
Configurations Chart for VTFI
| # of Ways | One-line Diagram (Horizontal) | Voltage Class (kV) | Catalog Number | ||
| Width* in. (mm) | Wt. w/SF6 lbs (kg) | ||||
| 6F |  | 15 | VTFI32-376-12-6F | 62 (1575) | 1350 (614) |
| 25 | VTFI32-386-12-6F | ||||
| 9F |  | 15 | VTFI42-376-12-9F | 74 (1880) | 1500 (681) |
| 25 | VTFI42-386-12-9F | ||||
| 52F |  | 15 | VTFI52-376-12-52F | 86 (2184) | 1750 (796) |
| 25 | VTFI52-386-12-52F | ||||
| 62F |  | 15 | VTFI62-376-12-62F | 98 (2489) | 1950 (886) |
| 25 | VTFI62-386-12-62F | ||||
| Approximate height of tank minus frame: 29″ (737mm), Approximate depth: 25.5″ (648) | |||||
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