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03450121H Littelfuse 03450121H through hole fuse holder designed for 5x20mm cartridge fuses. Rated 16A at 600V with horizontal orientation and PC pin termination.
Mfr Part #:

03450121H

Available from 2 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
Littelfuse 03450121H through hole fuse holder designed for 5x20mm cartridge fuses. Rated 16A at 600V with horizontal orientation and PC pin termination.
Total Stock: 221 pcs

03450121H Available from 2 distributors

Authorised
Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
220 pcs
220 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
1 pcs
1 pcs On Request 1 On Request On Request On Request On Request On Request

03450121H Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Body Material
Contact Finish
Contact Material
Contact Resistance
Current Rating
Current Rating (Amps)
Dielectric Strength
For Use With
Fuse Size
Fuse Type
Fuseholder Type
Ingress Protection
Insulation Resistance
Mounting Type
Number of Circuits
Operating Temperature
Orientation
SVHC Present
Tape & Reel
Termination Style
Voltage
Voltage Rating

03450121H Description

Short technical summary and product information.

The Littelfuse 03450121H is a 345 HV Series enclosed fuse holder designed for use with 5x20mm cartridge fuses. It features a through hole mounting style with horizontal orientation and PC pin termination for reliable PCB attachment.

 

Electrical ratings include 16A current and 600V voltage rating. The holder offers high insulation resistance of 10,000 MΩ minimum at 500 VDC, contact resistance less than 0.005 Ω average, and dielectric strength of 4,000 V minimum. It operates across a temperature range of -40°C to +85°C.

 

The body is molded from black glass-filled thermoplastic with UL 94V-0 flammability rating. Contacts are brass with tin finish. The fuseholder provides IP40 ingress protection, meaning it is protected from solid objects greater than 1mm but not from liquids.

03450121H Quick Information

Product Type: Fuse Holder
Series: 345 HV Series
Canonical Name: 03450121H Littelfuse Fuse Holder for Cartridge Fuses, 600V, 16A, Through Hole, Horizontal, PC Pin
Subcategory: Panel Mount Enclosed Fuse Holders

03450121H Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected
Lead Free: No

03450121H Features

  • Rated 16A at 600V for cartridge fuses.
  • Through hole mounting with horizontal orientation.
  • PC pin termination for secure PCB attachment.
  • Black glass-filled thermoplastic body UL 94V-0.
  • IP40 protected against solid objects >1mm.

03450121H Applications

  • General purpose circuit protection in PCB assemblies.
  • Power supplies and industrial control equipment.
  • Consumer electronics requiring cartridge fuse protection.
  • Telecommunications and networking equipment.

03450121H FAQs

5 frequently asked questions generated from this part’s specifications.
What type of fuse does the 03450121H accept?

It accepts 5mm x 20mm cartridge fuses.

What is the current rating of this fuse holder?

The current rating is 16 A.

What is the voltage rating of the 03450121H?

The voltage rating is 600 V.

How is the 03450121H mounted?

It is mounted through hole with horizontal orientation and PC pin termination.

What is the operating temperature range?

The operating temperature range is -40°C to +85°C.

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