Description
Projecta IFB-250 Fuse Box with 250A ANL Fuse - Heavy-Duty Inline Fuse Holder for High-Power Inverter and High-Current DC Circuit Protection
Protect your high-power inverter installation and prevent cable fires with Projecta IFB-250 Fuse Box—featuring heavy-duty ANL fuse holder with 250A fuse providing critical overcurrent protection for high-current DC circuits, designed for installation in positive (+) DC line close to battery protecting cable from fire risk during short circuit conditions, suitable for inverter installations up to approximately 3000W continuous power (250A at 12V), robust construction withstanding harsh automotive and marine environments, includes 250A ANL fuse ready for immediate installation, accepts standard ANL fuse format enabling easy replacement when fuse operates, transparent cover allowing visual fuse inspection without disassembly, brass terminals providing reliable electrical connection and corrosion resistance, recommended safety component for high-power inverter installations protecting expensive equipment and preventing vehicle fire risk, significantly safer than installations without proper fusing between battery and inverter, meets electrical safety requirements for professional high-power inverter installations, suitable for caravans, motorhomes, 4WD vehicles, boats, and any high-current DC application requiring circuit protection, replacement fuses available separately (Projecta IF-250), essential component for DIY high-power inverter installations or upgrading existing installations lacking proper overcurrent protection, and providing peace of mind through professional-grade circuit protection preventing catastrophic failures.
Product Overview
Projecta IFB-250 Fuse Box delivers essential overcurrent protection for high-power inverter installations and high-current DC circuits preventing cable fires and equipment damage. ANL fuse holder with 250A fuse protects positive DC line between battery and high-power inverter—during short circuit conditions (cable damage, inverter internal fault, equipment malfunction), fuse interrupts current flow before cable overheats preventing fire. Critical safety component often overlooked in DIY installations—installations without proper fusing risk cable fires from short circuits potentially causing vehicle fire and catastrophic damage.
Designed for installation close to battery (within 450mm) in positive DC line protecting maximum cable length from short circuit damage. Heavy-duty ANL (Automotive Nickel Link) fuse format standard in automotive and marine high-current applications providing reliable interruption at rated current. Transparent cover enables visual fuse inspection without removing cover—blown fuse shows visible broken element enabling quick diagnosis. Brass terminals ensure reliable electrical connection and resist corrosion in harsh environments.
Suitable for high-power inverter installations up to approximately 3000W continuous power (250A at 12V)—ideal for powering household appliances, air conditioners, microwaves, power tools, and multiple simultaneous loads in caravans and motorhomes. Also protects other high-current DC circuits including high-output DC-DC chargers, solar charge controllers, high-power amplifiers, and auxiliary battery systems. Any circuit carrying significant current between battery and load benefits from proper fusing preventing cable fire risk.
Critical Safety Function: Prevents cable fires during short circuit conditions. Without fusing, short circuit causes cable to carry excessive current overheating insulation potentially igniting surrounding materials. Proper fusing interrupts fault current within milliseconds preventing cable temperature rise. Difference between safe installation and catastrophic vehicle fire. Australian electrical standards and insurance policies typically require proper overcurrent protection on high-current DC circuits.
Installation Requirements: Install in positive (+) DC line as close to battery as practical (within 450mm maximum). Close battery placement protects maximum cable length from short circuit damage. Typical installation sequence: battery positive terminal → fuse box → cable run to inverter → inverter positive input. Do not install in negative line—positive line fusing standard practice. Secure mounting preventing vibration loosening connections. Accessible location simplifying fuse inspection and replacement. Use appropriate cable gauge for 250A continuous current—typically 00 AWG (70mm²) or larger copper cable.
ANL Fuse Technology: ANL (Automotive Nickel Link) fuses designed for high-current automotive and marine applications. Time-delay characteristics prevent nuisance tripping during inverter startup surge while providing fast interruption during sustained overload or short circuit. Blade-style construction with large contact area ensuring low resistance and reliable operation. Visual inspection through transparent element showing fuse condition. Standard format ensuring replacement fuse availability.
Robust Construction for Harsh Environments: Heavy-duty construction withstanding vibration, temperature extremes, moisture exposure, and corrosion. Brass terminals resisting corrosion in marine environments and providing reliable electrical connection. Transparent cover protecting fuse from contamination while enabling visual inspection. Resistant to vibration, temperature extremes, moisture exposure, and corrosion. Suitable for permanent installation in vehicles, caravans, boats, and outdoor applications. Professional-grade components ensuring reliable long-term operation in demanding conditions.
Essential for Professional Installations: Recommended component for all high-power inverter installations meeting electrical safety standards. Professional installations require proper overcurrent protection for insurance compliance, electrical inspections, and Australian Standards compliance. DIY installations benefit from professional-grade safety components preventing fire risk and equipment damage.
Projecta Quality and Support: Projecta 50-year Australian heritage delivering quality electrical components. Professional-grade construction meeting automotive and marine standards. Australian support ensuring replacement part availability and technical assistance. Quality assurance for critical safety applications.
Technical Specifications
|
|
| SKU |
IFB-250 |
| Product Type |
Fuse Box with ANL Fuse |
| Brand |
Projecta |
| Fuse Type |
ANL (Automotive Nickel Link) |
| Fuse Rating |
250A |
| Fuse Included |
Yes (250A ANL) |
| Voltage |
12V DC systems |
| Suitable for Inverters |
Up to ~3000W continuous |
| Approximate Current |
250A maximum |
| Terminal Material |
Brass |
| Cover |
Transparent (visual inspection) |
| Installation Location |
Positive (+) DC line, close to battery (within 450mm) |
| Weight |
0.500kg |
| Replacement Fuse |
IF-250 (250A ANL) |
| Recommended Cable Size |
00 AWG (70mm²) or larger |
| Construction |
Heavy-duty automotive/marine grade |
| Applications |
High-Power Inverter Protection, DC-DC Charger, High-Current Circuits, Solar Protection |
Frequently Asked Questions
Q: Where exactly should I install this fuse box in my high-power inverter setup?
A: Install in positive (+) DC line between battery positive terminal and inverter positive input, as close to battery as practical (within 450mm maximum). Close battery placement protects maximum cable length from short circuit damage. Typical installation: battery positive terminal → fuse box → cable run to inverter → inverter positive input. Do not install in negative line—positive line fusing standard practice. Secure mounting preventing vibration loosening. Accessible location simplifying fuse inspection and replacement. Use appropriate cable gauge—typically 00 AWG (70mm²) or larger for 250A applications.
Q: How do I know what size fuse I need for my inverter?
A: Calculate based on inverter continuous power rating. Formula: Fuse rating (amps) = (Inverter watts ÷ 12V) × 1.25 safety margin. Examples: 1500W inverter = (1500W ÷ 12V) × 1.25 = 156A, use 150A-200A fuse; 2000W inverter = (2000W ÷ 12V) × 1.25 = 208A, use 200A-250A fuse; 2500W inverter = (2500W ÷ 12V) × 1.25 = 260A, use 250A-300A fuse; 3000W inverter = (3000W ÷ 12V) × 1.25 = 313A, use 300A-350A fuse. This 250A fuse suitable for inverters up to approximately 3000W. Oversized fuse provides inadequate protection, undersized fuse causes nuisance tripping.
Q: Can I use this instead of a circuit breaker for my high-power inverter?
A: Yes, ANL fuse provides equivalent overcurrent protection to circuit breaker for high-power inverter applications. Advantages of fuse: lower cost, simpler installation, no mechanical parts to fail. Advantages of circuit breaker: resettable without replacement part, manual disconnect capability, easier troubleshooting. Both provide adequate protection—choice depends on preference and budget. Fuse more common in budget installations, circuit breaker preferred in premium installations requiring manual disconnect capability.
Q: What happens when the fuse blows and how do I replace it?
A: Blown fuse interrupts power to inverter—inverter stops operating, connected appliances lose power. Fuse blows during short circuit conditions or sustained overload exceeding rating. To replace: disconnect battery negative terminal (safety), remove fuse box cover, remove blown fuse (visible broken element), install replacement 250A ANL fuse (Projecta IF-250), replace cover, reconnect battery. Investigate cause before restoring power—identify and repair short circuit or overload preventing repeated fuse operation. Carry spare fuses when touring enabling roadside repair.
Q: My high-power inverter didn't come with a fuse—do I really need to add one?
A: Absolutely yes—fusing critical safety component preventing cable fire risk during short circuit conditions. Many inverters sold without external fusing expecting installer to provide appropriate protection. Australian electrical standards and insurance policies typically require proper overcurrent protection on high-current DC circuits. Without fusing, short circuit (damaged cable, inverter internal fault) causes cable to carry excessive current overheating insulation potentially causing vehicle fire. Proper fusing difference between safe installation and catastrophic failure. Always install appropriate fuse or circuit breaker between battery and inverter—never operate without overcurrent protection.
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