GF‑718 ATO Blade Fuse Holder Clip | 40A AC250V Medium Standard Fuse Socket
GF‑718 ATO blade fuse holder clip for medium standard blade fuses, 40A AC250V, contact resistance ≤20mΩ, insertion force 0.5–2kg. Automotive fuse box and wiring harness solution.
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GF‑718 ATO Blade Fuse Holder Clip | Medium Standard Blade Fuse Socket, 40A AC250V
The GF‑718 is an ATO standard blade fuse holder clip manufactured by EssFuse. Specifically, it is designed for medium‑size ATO / ATC blade plug‑in fuses. Rated voltage below AC 250V and carrying current up to 40A. Furthermore, the contact resistance stays within 20mΩ both initially and after durability testing. Therefore, this fuse clip is widely adopted in automotive fuse boxes, distribution panels, and industrial wiring harnesses requiring reliable medium‑blade fuse mounting.
Product Overview
Core Design Purpose
The GF‑718 ATO fuse holder clip targets medium standard blade fuse mounting in automotive and industrial electrical systems. Besides, it accepts standard ATO / ATC blade fuses (also called medium / regular blade fuses), which are the most common fuse form factor in vehicles. The clip structure secures the fuse mechanically while maintaining low contact resistance.
Electrical Performance
Notably, the GF‑718 supports voltage below AC 250V and current below 40A. As a result, it covers most automotive DC circuits and low‑voltage industrial AC distribution branches. Contact resistance remains at 20mΩ maximum after both initial insertion and post‑test cycles.
Mechanical Performance
Initial insertion force is controlled between 0.5kg and 2kg, with maximum initial insertion force below 2kg. Moreover, after durability testing, the minimum insertion force stays above 500g — preventing the fuse from loosening due to vibration.
Key Features & Benefits
Core Advantages
- ✅ Designed for ATO / ATC medium standard blade fuses (regular blade fuses)
- ✅ Rated voltage: AC 250V maximum
- ✅ Rated current: 40A maximum
- ✅ Contact resistance: 20mΩ maximum (initial and after test)
- ✅ Insertion force: initial 0.5–2kg, below 2kg maximum
- ✅ Post‑test insertion force: above 500g minimum
- ✅ Stable mechanical contact under vehicle vibration
- ✅ Suitable for automotive fuse box and panel mounting
- ✅ Brand: EssFuse / GFEFUSE (Dongguan GongFu Electronic)
Main Electrical & Mechanical Ratings
Specification Summary
| Item | Specification |
|---|---|
| Model | GF‑718 |
| Product Type | ATO / ATC Blade Fuse Holder Clip |
| Compatible Fuse Size | Medium (Regular) Standard Blade Fuse — ATO / ATC |
| Rated Voltage | Below AC 250V |
| Rated Current | Below 40A |
| Contact Resistance (Initial) | ≤ 20mΩ |
| Contact Resistance (After Test) | ≤ 20mΩ |
| Initial Insertion Force | 0.5 – 2kg (below 2kg max) |
| Post‑Test Insertion Force | ≥ 500g |
| Application | Automotive fuse box, distribution panel, wiring harness |
Solutions We Provide
Application Solutions
1. Automotive Fuse Box Integration
We supply GF‑718 ATO fuse clips for automotive fuse box manufacturers. The 0.5–2kg insertion force ensures assembly‑line friendly insertion while keeping vibration‑resistant retention above 500g after long‑term use. Specifically, this balances ease of service and reliable contact.
2. Wiring Harness & Distribution Panel
For wiring harness makers and DC distribution panel builders, the GF‑718 offers a standard footprint for medium blade fuses. Furthermore, the 20mΩ contact resistance keeps power loss minimal even at 40A. Therefore, heat buildup inside enclosed boxes is controlled.
3. Customization & OEM Support
EssFuse provides OEM/ODM service: custom contact material, tin / nickel plating options, and custom lead length. In addition, we support customer‑specific tooling for special mounting layouts. Contact our sales team for drawings and samples.
Typical Applications
Use Cases
- Automotive fuse box and junction block
- Motorcycle and off‑road vehicle electrical system
- DC / AC low‑voltage distribution panel
- Industrial control cabinet fuse mounting
- Battery management system (BMS) branch fuse clip
- Marine and caravan electrical protection
Customer Questions & Answers
Real Customer Questions
1: What is the difference between ATO and mini blade fuses?
ATO / ATC (medium / regular) blade fuses are larger than mini blade fuses — typically 19.1mm x 5.2mm x 18.5mm body. The GF‑718 holder is designed for ATO medium fuses, while the GF‑C41 (separate model) accepts MINI blade fuses. Please confirm your fuse body size before ordering.
2: Can it carry 40A continuously?
A: The 40A rating is the upper design limit. For continuous operation, we recommend derating to below 70–80% of 40A (i.e. 28–32A) in enclosed cabinets, or below 35A in open air. Continuous full‑load operation causes excessive temperature rise.
3: What is the contact material and plating?
A: The GF‑718 uses brass contact with tin plating (standard). Copper alloy or nickel plating options are available on request. Contact resistance is ≤ 20mΩ for the standard version.
4: How does the insertion force hold up after vibration?
A: After durability testing, insertion force remains above 500g minimum. This ensures the fuse does not back out under vehicle vibration. Initial insertion is controlled at 0.5–2kg for easy hand‑assembly on production lines.
5: Is it suitable for DC automotive 12V / 24V / 48V systems?
A: Yes. The AC 250V rating is well above any automotive DC voltage (12V / 24V / 48V). The 40A current limit applies. For 48V mild hybrid systems, confirm the fuse rating and short‑circuit protection level with our engineering team.
6: Do you offer samples and OEM service?
A: Yes. We provide free samples for evaluation, and full OEM/ODM service including custom lead length, terminal type, packaging, and customer‑specific tooling. Minimum order quantity for OEM customization is negotiable.
7: What certifications does it carry?
A: The insulator uses UL 94‑V0 flame‑retardant material. RoHS compliant. For automotive‑grade (IATF 16949) specific inquiries, please contact our sales team for the latest approval status.
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