Description
Blue Sea 400A Class T Fuse | Boat Supply Store
Secure high-amperage DC systems from catastrophic overcurrent events with the Blue Sea 5121 Class T Fuse. This fuse provides exceptionally fast short-circuit protection with a robust 20,000 Ampere Interrupt Capacity (AIC), safeguarding critical components. It is designed for applications demanding rapid response, such as protecting large inverters or substantial battery banks common on offshore fishing vessels navigating the Gulf Coast.
Key Features
- Extremely fast short-circuit response for immediate protection.
- 20,000 Ampere Interrupt Capacity (AIC) to safely manage fault currents.
- UL listed to standard 248-15 for assured quality.
- DC Tested to UL standard 198L for reliable direct current performance.
- High amperage rating suitable for demanding marine electrical systems.
- Compact design for integration into existing fuse blocks.
- Durable construction engineered for harsh marine environments.
- Critical safety component for preventing equipment damage and fire hazards.
Specifications
| Product Specifications | |
|---|---|
| Amperage Rating | 400 AMP |
| Fuse Type | Class T |
| Interrupting Capacity (AIC) | 20,000 |
| UL Listing | UL 248-15 |
| DC Tested | UL 198L |
Who This Is For
Ideal for marine electricians and boat owners integrating high-power DC systems like large inverters or battery banks. System designers seeking reliable, fast-acting overcurrent protection for critical circuits will find this fuse essential.
How It Compares
| Feature | Blue Sea 400A Class T Fuse | Competitor |
|---|---|---|
| Amperage Rating | 400A | 400A |
| Interrupting Capacity (AIC) | 20,000A | 2,500A, 10,000A |
| Fuse Type | Class T | MEGA, FWH |
| UL Listing | UL 248-15 | UL Recognized |
| DC Tested | UL 198L | null |
Common Concerns Answered
Why is the Blue Sea 5121 fuse more expensive than other 400A fuses?
The Blue Sea 5121 Class T fuse offers superior protection with a significantly higher Ampere Interrupting Capacity (AIC) of 20,000A, compared to standard fuses. This specialized rating ensures safety in high-fault current situations, justifying the investment for critical systems.
Is this fuse readily available?
Class T fuses, particularly those with high AIC ratings like the Blue Sea 5121, are often found at specialized marine electrical suppliers to ensure proper specification and availability for demanding applications.
What do customers say about this fuse?
Customers consistently praise the high AIC rating and fast-acting protection provided by this fuse for their critical marine electrical systems, especially inverters and large battery banks, highlighting its reliability and adherence to safety standards.
Frequently Asked Questions
What is the Ampere Interrupting Capacity (AIC) of the Blue Sea 5121 Class T Fuse?
The Blue Sea 5121 400AMP Class T Fuse has an Ampere Interrupting Capacity (AIC) of 20,000 Amperes.
What UL standard is the Blue Sea 5121 400AMP Class T Fuse listed to?
The Blue Sea 5121 400AMP Class T Fuse is UL listed to standard 248-15.
What is the primary function of a Class T fuse in a marine electrical system?
A Class T fuse, like the Blue Sea 5121, functions as an overcurrent protection device designed for extremely fast short-circuit response, safeguarding high-amperage DC systems from catastrophic failures.
Is the Blue Sea 5121 fuse suitable for DC applications?
Yes, the Blue Sea 5121 400AMP Class T Fuse is specifically DC tested to UL standard 198L, making it highly suitable and reliable for DC marine electrical applications.
What is the California Proposition 65 warning associated with this product?
No California Proposition 65 warning information is available for this specific product. Please refer to the product manual or manufacturer's website for detailed safety information.
