0451015. MRL
15A 458 series fast-acting surface-mount fuse for overcurrent protection. 125V rating with high interrupting capacity for power electronics.
Product Overview
Description
The Littelfuse 0451015. MRL is a 15A fast-acting surface-mount fuse from the 458 series, designed for overcurrent protection in power electronics applications. With a 125V voltage rating and high interrupting capacity, this fuse provides reliable protection for circuits up to 15A.
The fast-acting characteristic ensures rapid response to overcurrent conditions, protecting sensitive electronics from damage. The ceramic body construction provides excellent arc quenching and thermal stability.
Packaged in a compact 2410 surface-mount package, the 0451015. MRL is compatible with automated assembly processes and is ideal for space-constrained applications. The fuse is UL and CSA recognized for safety compliance.
Product Series
458 Series
Primary Application
Power supply protection
Key Features
- 15A current rating
- 125V AC/DC voltage rating
- Fast-acting characteristic
- High interrupting capacity
- Ceramic body construction
- 2410 surface-mount package
- UL and CSA recognized
- RoHS compliant
Specifications
| currentRating | 15A |
|---|---|
| voltageRating | 125V AC/DC |
| interruptingRating | 100A at 125V AC |
| timeCharacteristic | Fast-Acting |
| package | 2410 SMD |
| dimensions | 6.1mm x 2.5mm |
| operatingTemperature | -55°C to +125°C |
| safetyAgency | UL, CSA |
Applications
Power supply protection
Power conversion and supply
Battery protection
Battery and charging management
Motor drive protection
Motor drive and control systems
Industrial controls
Industrial automation and control
Automotive electronics
Automotive and EV electronics
LED drivers
Motor drive and control systems
FAE Expert Insights
"The 0451015. MRL is a reliable fast-acting fuse that I frequently recommend for power electronics protection. The 15A rating is a common requirement for many industrial and automotive applications. The fast-acting characteristic is important - you want the fuse to blow quickly during a short circuit before damage occurs to your electronics. The 2410 package is compact but still robust enough for industrial applications. One key consideration is the interrupting rating - at 100A, this fuse can safely clear high-fault currents without exploding or arcing. Always verify that your fuse's interrupting rating exceeds the maximum prospective short-circuit current in your circuit. For automotive applications, the -55°C to +125°C temperature range is essential. I typically recommend placing fuses as close as possible to the power entry point, and always ensure there's adequate spacing around the fuse for heat dissipation and safe clearing."
Reliable 15A fast-acting protection for power electronics
— Michael Chen, BeiLuo
Frequently Asked Questions
How do I select the right fuse current rating?
Selecting the correct fuse current rating involves several considerations: (1) Normal Operating Current - The fuse rating should be 1.25-1.5× the maximum normal operating current. For a 10A load, use 12.5-15A fuse; (2) Inrush Current - Account for startup inrush current. Time-delay fuses are better for loads with high inrush; (3) Ambient Temperature - Derate fuse rating for high temperatures. At 85°C, a 15A fuse may act like a 12A fuse; (4) Voltage Rating - Must exceed circuit voltage, including transients; (5) Interrupting Rating - Must exceed maximum prospective short-circuit current. For the 0451015. MRL 15A fuse: use for circuits with 8-12A normal current, ensure voltage is under 125V, and verify interrupting rating exceeds your system's available fault current. Always leave margin - a fuse operating at 90% of its rating will have reduced life. For critical applications, consult the fuse's time-current curve to ensure proper coordination with other protection devices.
Select fuse rating 1.25-1.5× normal current. consider inrush, temperature, and interrupting rating. contact our FAE team for fuse selection assistance.