BF73-I Coaxial Thermal Cutoff Fuse 15A 16A 125V 73°C for Refrigerator and HVAC Overheat Protection
Price:
Negotiable
MOQ:
1000 Pieces
Delivery Time:
7-10 Workdays
Brand:
AMPFORT
Product Description
Product Overview
The BF73-I Coaxial Thermal Cutoff Fuse is a compact, globally recognized thermal protection device designed for overheating protection in electrical circuits. With a rated temperature of 73°C and current capacity of 15A/16A at 125V, this thermal fuse provides reliable one-shot operation to permanently interrupt power when temperatures exceed safe limits.
Key Features
- Current interrupt capacity up to 20A at 250VAC
- Functioning temperature range from 72°C to 240°C
- Available in cut, formed or terminated leads
- Mounted and potted options available
- UL/CSA, VDE, CCC, METI, BEAB approved
- One shot operation cuts off electrical power permanently
- Low resistance design
Technical Advantages
- Unique pellet formula technology ensures stable operation and high precision
- Complete product quality management system guarantees high consistency and reliability
- Metal casing design provides high sensitivity to temperature rise
- Applicable to overheating protection under 10A-16A circuits
Technical Specifications
| Model NO. | Tf(℃) | Fusing-off Temperature (℃) | Th (℃) | Tm(℃) | Ir(A) | Ur(V) |
|---|---|---|---|---|---|---|
| BF73-I | 73 | 73+0/-10 | 70±2 | 58 | 15/16 | 125 |
| BF77-I | 77 | 77+0/-10 | 74±2 | 62 | 15/16 | 125 |
| BF84-I | 84 | 84+0/-10 | 82±2 | 69 | 15/16 | 125 |
Physical Dimensions
Compact coaxial design measuring 4x11mm with 35mm overall length
| Parameter | Value (mm) |
|---|---|
| Length (a) | 20±1.0 |
| Diameter (b) | 11±1.0 |
| Overall Length (c) | 35±1.0 |
| Lead Diameter (d) | Ф1.0±0.1 |
| Body Diameter (e) | Ф4.0±0.1 |
Operating Principle
When ambient temperature rises to the operating temperature of 73°C, the internal pellet melts, releasing a spring mechanism that pushes the star contact away from the pin, permanently cutting off the electrical circuit.
Application Areas
Industrial equipment, safety devices, portable electronics, consumer appliances including refrigerators and HVAC systems
Certifications & Approvals
BF series products meet IEC 60691 Ed 4.0 and GB/T 9816.2013 safety standards with UL, CUL, PSE and other global agency certifications.
| Model No. | UL/CUL | PSE |
|---|---|---|
| BF73-I | E140847 | JET0749-32001-1007 |
| BF77-I | - | JET0749-32001-1007 |
| BF84-I | - | JET0749-32001-1008 |
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Dongguan Ampfort Electronics Co., Ltd.
Location
Floor 5,Changlong Industrial Building,No.6,Jiangnan Road,Jingshan,Chashan Town,Dongguan 523323,China
Contact Person
Annie Fang