Fuse Holders Selection Guide: Technical Criteria & Application Standards
Fuse Holders selection guide: technical parameters, mounting and compliance standards, and Schneider Electric, KSN comparison.
A fuse holder is a carrier that holds a cylindrical cartridge fuse, connects it into the circuit and makes the fuse easier to replace. It is used in panels to protect control, measurement and motor circuits, for DC string fuses in photovoltaic systems, and at the supply inputs of electronic devices. This page includes ABB's E 90 series fuse holders and fused disconnectors, the E 90 PV solar fuse holder, Schneider Electric TeSys DF series 1-pole and 3-pole models for 10x38, 14x51 and 22x58 mm fuses, and Konsan's 5x20 and 6x30 mm fuse holders; ABB E 9F series cartridge fuses are in the same list. Choose the holder by the size, rated current and voltage of the fuse to be used, the number of poles, and whether the circuit is AC or DC. The rated current of the holder indicates the largest fuse it can accept; the level of protection is determined by the rated current and duty class of the installed fuse. A fuse holder should not be confused with a fuse box: the holder carries a cartridge fuse, while a fuse box is the enclosure in which miniature circuit breakers are lined up. The Fuse Holders category on Welibaba includes 12 active models from leading manufacturers such as Schneider Electric, KSN.
Key Technical Parameters for Selecting Fuse Holders
To specify the right Fuse Holders model for your panel or installation, verify the following parameters against your engineering schedule:
| Parameter | Typical Catalog Values | Verification Note |
|---|---|---|
| Rated Impulse Withstand Voltage (Uimp) | 6 kV, 8 kV | Verify against project schedule and load calculation |
| Rated Operational Current (Ie) | 100 A, 25 A @ 400 V AC, 32 A @ 400 V AC, 50 A | Verify against project schedule and load calculation |
| Rated Insulation Voltage (Ui) | 500 V AC, 690 V AC | Verify against project schedule and load calculation |
| Storage Temperature | -40…70 °C, -40…80 °C | Verify against project schedule and load calculation |
Installation, Compatibility, and Commissioning Checklist
- Electrical & Mechanical Matching: Confirm that rated voltage, current capacity, and mounting dimensions align with the upstream and downstream components in Electrical and Installation.
- Environmental & Enclosure Rating: Check IP protection class, housing material, and terminal capacity for dusty, humid, or high-vibration industrial environments.
- Related Product Groups: If your application calls for a different form factor or rating, compare sibling categories such as Electric Fly Killers, Industrial Extension Cords, Video and Audio Connection Accessories.
Frequently Asked Questions
What is the first parameter to check when selecting Fuse Holders?
Start by confirming the circuit's rated electrical values and physical mounting dimensions, then use the technical attribute filters on the Fuse Holders page to narrow down compatible series.
Which Fuse Holders brands are available on Welibaba?
Welibaba currently stocks 12 active models in this category from manufacturers including Schneider Electric, KSN, complete with verified specifications and unit pricing.
How can I compare Fuse Holders models by manufacturer part number?
You can search directly by manufacturer SKU/order code or use the category filter panel to compare equivalent models across brands side by side.