C-Rated Capacitor Protection Fuses
DENCO C-rated fuses protect capacitors and capacitor banks against case rupture and dielectric failure. They are current-limiting with silent operation and no discharge, and are available with or without a blown-fuse indicator.
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Specifications
| Parameter | Value |
|---|---|
| AC voltages | 1000V, 1.5kV, 2.5kV, 3kV, 4.3kV, 5.5kV, 8.3kV, 15.5kV, 23kV, 27kV, 38kV (AC) |
| Ampere range | 1C to 200C (1A to 200A) |
| Interrupting rating | 40kA, 50kA, 60kA, 65kA, 80kA |
| Indicator options | With or without blown fuse indicator |
| Melting characteristic | Melts in 1000 seconds at 1.7 to 2.4x the C rating |
| Type references | DNX / DNXC, 9F60 Series, EJ-5, EJO-5 and Standard |
Catalog numbers
| Catalog no. | Availability | Last reviewed |
|---|---|---|
| DNXC8-10 | Active | 2026-08-27 |
| DNXC8-18 | Active | 2026-08-27 |
| DNXC8-25 | Active | 2026-08-27 |
| DNXC8-30 | Active | 2026-08-27 |
| DNXC8-40 | Active | 2026-08-27 |
| DNXC8-45 | Active | 2026-08-27 |
| DNXC8-65 | Active | 2026-08-27 |
| DNXC15-10 | Active | 2026-08-27 |
| DNXC15-12 | Active | 2026-08-27 |
| DNXC15-18 | Active | 2026-08-27 |
| DNXC15-25 | Active | 2026-08-27 |
| DNXC15-30 | Active | 2026-08-27 |
| DNXC15-35 | Active | 2026-08-27 |
| DNXC15-40 | Active | 2026-08-27 |
| DNXC23-12 | Active | 2026-08-27 |
| DNXC23-18 | Active | 2026-08-27 |
| DNXC23-25 | Active | 2026-08-27 |
Applications
- Capacitor and capacitor bank protection
- Power factor correction equipment
- Harmonic filtering equipment
- Induction heating systems
- High power drives and welders
Limits and boundaries
- Indoor or outdoor within an enclosure
Standards and testing
- Designed to ANSI C37-41
Wording reflects the evidence DENCO holds. “Designed to” a standard is not the same as certified or listed to it; where a certification exists we publish the certificate number.
Technical documents
Data sheets, dimensional drawings and time-current curves for this family are available on request. Ask for the documents you need.
What we need to quote
Voltage and whether the system is AC or DC, continuous current, required interrupting rating, physical dimensions and mounting, any indicator requirement, and the standard or approval you must meet. A photograph or drawing of the existing part is usually the fastest route.
Technical review
Specifications on this page are quoted from DENCO’s product catalog. Confirm any rating against DENCO engineering before specifying.