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0452004.MRL Littelfuse 0452004.MRL is a 4A, 125V Slo-Blo surface mount fuse in a 2-SMD square end block package with 50A breaking capacity.
Mfr Part #:

0452004.MRL

Available from 6 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
Littelfuse 0452004.MRL is a 4A, 125V Slo-Blo surface mount fuse in a 2-SMD square end block package with 50A breaking capacity.
Total Stock: 12,078 pcs

0452004.MRL Available from 6 distributors

Authorised
Non-Authorised

0452004.MRL Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Approval Agency
Breaking Capacity
Breaking Capacity @ Rated Voltage
Current Rating
Current Rating (Amps)
Fuse Type
Halogen Free
Height
Length
Medical Grade
Melting I²t
Military Grade
Mounting Type
Operating Temperature
Response Time
Voltage Rating
Width

0452004.MRL Description

Short technical summary and product information.

The Littelfuse 0452004.MRL is a NANO2 Slo-Blo fuse designed for surface mount applications requiring inrush current tolerance. This fuse is rated for 4A continuous current at 125V AC/DC with a breaking capacity of 50A. The slow-blow response time accommodates temporary inrush currents, reducing nuisance opening in circuits with capacitive or inductive loads.

 

Key electrical characteristics include a melting I²t of 34.4 A²s and an operating temperature range of -55°C to 125°C. The fuse is housed in a compact 2-SMD square end block package measuring 6.10mm x 2.69mm x 2.69mm, suitable for high-density PCB designs.

 

This component carries agency approvals from CSA, PSE, and UR, and is marked RoHS compliant and halogen-free per the manufacturer datasheet. It is part of the 452/454 Series from Littelfuse.

0452004.MRL Quick Information

Product Type: Surface Mount Fuse
Series: 452/454 Series
Canonical Name: Littelfuse NANO2 Slo-Blo 4A 125V Surface Mount Fuse
Subcategory: Slo-Blo Fuse

0452004.MRL Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: Yes

0452004.MRL Features

  • 4A current rating at 125V AC/DC.
  • Slo-Blo response for inrush tolerance.
  • 50A breaking capacity at rated voltage.
  • Surface mount 2-SMD square end block.
  • Agency approvals CSA, PSE, UR.

0452004.MRL Applications

  • Ideal for notebook PC power protection.
  • Used in LCD TV and monitor circuits.
  • Protects power supply and server systems.
  • Suitable for telecom and networking gear.
  • Battery charging circuit protection.

0452004.MRL FAQs

5 frequently asked questions generated from this part’s specifications.
What is the current rating of the 0452004.MRL?

The current rating is 4A.

What is the voltage rating and breaking capacity?

The voltage rating is 125V and the breaking capacity is 50A.

Is this a fast-acting or slow-blow fuse?

It is a slow-blow (time-delay) fuse, suitable for circuits with inrush currents.

What is the package type and mounting style?

The package is 2-SMD, Square End Block, with surface mount mounting.

What is the operating temperature range?

The operating temperature range is -55°C to 125°C.

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