Clip Lock 14 E-Rated Transformer Fuses, 5.5kV to 15.5kV
The Clip Lock 14 (CL-14) series is DENCO's E-rated fuse for cam-lock clip mounting. It is listed at 5.5kV (10E to 600E, 63kA), 8.25kV (60E to 200E, 50kA) and 15.5kV (10E to 300E, 50kA), in single, double or triple 3-inch (size D) barrels, for indoor use or outdoors in a weatherproof enclosure.
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The catalog describes clip-lock mounting as a secure, high-integrity connection: the fuses sit in specialized cam-lock clips for straightforward installation and replacement. Like the other E-rated ranges they are general purpose, current-limiting and non-venting, and melt at currents as low as 1.7 times rating.
Dimensions are given as length D and clip-lock center E. At 5.5kV, 10E to 150E fuses are 16.81 in (427 mm) long on a 15.25 in (388 mm) center, and 200E to 600E fuses are 22.81 in (580 mm) on 21.25 in (540 mm). At 8.25kV the 60E fuse uses a 15.70 in (399 mm) center and the 200E a 15.39 in (391 mm) center, both 16.95 in (431 mm) long. At 15.5kV, 10E to 50E fuses are 19.81 in (504 mm) on 18.25 in (464 mm), and 65E to 300E fuses are 22.81 in on 21.25 in, drawn as Fig. 1 to Fig. 3.
Specifications
| Parameter | Value |
|---|---|
| D5.5C | 5.5kV, 10E to 600E, 63kA RMS sym |
| D8.25C | 8.25kV, 60E to 200E, 50kA RMS sym |
| D15.5C | 15.5kV, 10E to 300E, 50kA RMS sym |
| Barrel | 3 in (76.2 mm) diameter, size D; single, double or triple barrel |
| 5.5kV length D / clip-lock center E | 10E to 150E: 16.81 in (427 mm) / 15.25 in (388 mm); 200E to 600E: 22.81 in (580 mm) / 21.25 in (540 mm) |
| 8.25kV length D / clip-lock center E | 60E: 16.95 in (431 mm) / 15.70 in (399 mm); 200E: 16.95 in / 15.39 in (391 mm) |
| 15.5kV length D / clip-lock center E | 10E to 50E: 19.81 in (504 mm) / 18.25 in (464 mm); 65E to 300E: 22.81 in (580 mm) / 21.25 in (540 mm) |
| Indicator trip force | 2 lb at 0.50 in |
Construction and options
- Clip-lock mounting in specialized cam-lock clips
- Current-limiting design
- Non-venting for quiet operation
- Blown-fuse indicator
- Durable label with catalog number and manufacturing date
- Indoor, or outdoors in a weatherproof enclosure
- Catalog performance line: high breaking capacity, high current limiting, low switching voltage, extremely short times, low power dissipation
Applications
- Protection for 5.5kV to 15.5kV transformers or distribution systems
Standards and equivalents
- E-rating melting criteria per ANSI C37.46-2000
- General purpose current-limiting fuse per IEEE Std C37.40-2003
Wording is the catalog’s own. “In accordance with” a standard is not the same as certified or listed to it.
Curves and drawings
The catalog prints the following for this series: dimension drawings fig. 1 to fig. 3 (diameter b, length d, clip-lock center e). This series is on pp.41–44 of the January 2025 DENCO catalog. Access the catalog or ask for the drawing or curve you need.
Technical review
Specifications on this page are quoted from DENCO’s product catalog. Confirm any rating against DENCO engineering before specifying.
Related
- E-Rated Transformer Protection Fuses: the full family
- 9F60 / EJ-1 / EJO-1 clip-on E-rated fuses, 2.75kV to 8.25kV
- 9F60 / EJ-1 / EJO-1 clip-on E-rated fuses, 15.5kV to 38kV
- 9F62 / EJO-1 general purpose clip-on fuses
- 9F62 bolt-on E-rated fuses
- All fuse product families
- Cross-reference and discontinued replacement