Manufacturer Part Number
MRL
Manufacturer
Littelfuse
Introduction
The 0452003.MRL by Littelfuse is a surface-mount fuse within the NANO²® 452 series, designed for circuit protection in a variety of applications.
Product Features and Performance
Surface Mount Mounting Type for compact, efficient design
Slow Blow fuse type for protection against sustained overcurrent conditions
Rated for both AC and DC circuits with a Voltage Rating of 125 V
3 A Current Rating suitable for a variety of low-power applications
High breaking capacity of 50A at Rated Voltage for reliable overcurrent protection
Designed with a Melting I²t of 20.16 for precise fault current control
Operates efficiently over a wide temperature range from -55°C to 125°C
Package size of 0.240" L x 0.106" W x 0.106" H for compact installations
Product Advantages
Dual AC/DC voltage rating increases application versatility
High breaking capacity ensures reliable performance in demanding conditions
Slow response time ideal for protecting circuits against transient overcurrents without unnecessary interruptions
Low DC Cold Resistance (0.034 Ohms) minimizes power loss and improves efficiency
Key Technical Parameters
Current Rating (Amps): 3 A
Voltage Rating AC/DC: 125 V
Response Time: Slow Blow
Package / Case: 2-SMD, Square End Block
Breaking Capacity @ Rated Voltage: 50A
Melting I²t: 20.16
Operating Temperature: -55°C ~ 125°C
DC Cold Resistance: 0.034 Ohms
Quality and Safety Features
Approval Agency Certifications: CSA, PSE, UR ensuring compliance with international safety standards
Compatibility
Surface-mount design compatible with modern PCB technology for a wide range of electronic devices
Application Areas
Suitable for consumer electronics, power supplies, industrial controls, and telecommunications equipment
Product Lifecycle
Product Status: Active, indicating ongoing production and availability
Not nearing discontinuation, ensuring long-term availability for new designs and replacements
Several Key Reasons to Choose This Product
High reliability and performance certified by CSA, PSE, and UR safety standards
Versatile application range thanks to the 125V AC/DC rating and 3A current capacity
Compact and efficient design suitable for various modern electronic applications
Provides robust protection with a slow blow time characteristic and high breaking capacity
Ensures minimal power loss due to low DC Cold Resistance, enhancing overall efficiency
