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FST 5x20 Miniature Fuse, 5 x 20 mm, Time-Lag T, L, 250 VAC

Series: FST 5x20

Miniature Fuse, 5 x 20 mm, Time-Lag T, L, 250 VAC

Free Sample Request

27 Variants


  • IEC Standard Fuse
  • L = Low Breaking Capacity (Glass Tube)


  • Primary Protection in Equipment

Application Note Primary Protection in Equipmentwith further information on increased   Pulse Strength and their test conditions according to international standards see   Impulse Withstand Voltage

Rated Voltage

250 VAC

Rated current

0.05 - 20 A

Breaking Capacity

35 A - 200 A


Time-Lag T

Admissible Ambient Air Temp.

-55 °C to 125 °C

Climatic Category

55/125/21 acc. to IEC 60068-1

Material: Tube


Material: Endcaps

Nickel-Plated Copper Alloy

Unit Weight

1 g

Storage Conditions

0 °C to 60 °C, max. 70% r.h.

Product Marking

S_SCHURTER_Logo, Rated current, Rated Voltage, Characteristic, Breaking Capacity, Certification marks

Detailed information on product approvals, code requirements, usage instructions and detailed test conditions can be looked up in  Details about Approvals
SCHURTER products are designed for use in industrial environments. They have approvals from independent testing bodies according to national and international standards. Products with specific characteristics and requirements such as required in the automotive sector according to IATF 16949, medical technology according to ISO 13485 or in the aerospace industry can be offered exclusively with customer-specific, individual agreements by SCHURTER.


The approval mark is used by the testing authorities to certify compliance with the safety requirements placed on electronic products.

Approval Reference Type: FST 5x20

Approval Logo Certificates Certification Body Description
Approval marks VDE VDE VDE Certificate Number: 40016093
Approval marks VDE_Fertigungsüberwachung VDE VDE Certificate Number: 40016093
Approval marks cURus UL UL File Number: E41599
Approval marks ccc CCC CCC Certificate Number: 2003010207046363
Approval marks CQC CQC CQC Certificate Number: CQC13012092334
Approval marks PSE METI Japan Electrical Safety and Environment technology Laboratories

Product standards

Product standards that are referenced

Organization Design Standard Description
Partners UL_Certification_Body Designed according to UL 248-14 Low voltage fuses - Part 14: Additional fuses
Partners CSA_Certification_Body Designed according to CSA22.2 No. 248.14 Low-Voltage Fuses - Part 14: Supplemental Fuses

Application standards

Application standards where the product can be used

Organization Design Standard Description
Partners IEC_Certification_Body Designed for applications acc. IEC/UL 60950 IEC 60950-1 includes the basic requirements for the safety of information technology equipment.


The product complies with following Guide Lines

Identification Details Initiator Description
Approval marks CE Selbsteklaration SCHURTER AG The CE marking declares that the product complies with the applicable requirements laid down in the harmonisation of Community legislation on its affixing in accordance with EU Regulation 765/2008.
Environment_Safety RoHS_Logo_color_CMYK_tif SCHURTER AG Directive RoHS 2011/65/EU, Amendment (EU) 2015/836
Environment_Safety China_RoHS_e_konform_eps SCHURTER AG The law SJ / T 11363-2006 (China RoHS) has been in force since 1 March 2007. It is similar to the EU directive RoHS.
Environment_Safety REACH SCHURTER AG On 1 June 2007, Regulation (EC) No 1907/2006 on the Registration, Evaluation, Authorization and Restriction of Chemicals 1 (abbreviated as "REACH") entered into force.


Photo Sélection d'images de produits pour afficher une variante spécifique du type


Type Corresponds to a product series and includes various distinct variants. On the type of descriptive data are summarized, eg in the data sheet

Numéro de commande

Numéro de commande Unique part number for placing an order

Touche de configuration

Touche de configuration The configuration key of a product consists of the composite key values, which describe the different kinds of attribut distinction.


Commentaires Les dessins CAO ne sont fournis qu'à des fins de modélisation.

Model Description

Model Description Description abrégée du modèle CAO


IGS Aussi connu sous le nom d'IGES (abréviation: Initial Graphics Exchange Specification). Il s'agit d'un format d'échange de données 3D-CAD largement utilisé et indépendant du programme.


Step Également mentionné en tant que STEP (standard pour l'échange de données sur les modèles de produits). Format d'échange commun indépendant du programme pour les données CAD 3D normalisées selon la norme ISO.


Parasolid Le noyau de modélisation Parasolid est un système CAD 3D. Il est développé par une business unit distincte au sein de Unigraphics Solutions (UGS), aujourd'hui Siemens PLM Software.


DXF (Drawing Interchange Format) est un format de fichier spécifié par Autodesk pour l'échange de données CAO, et a été développé pour le programme 2D-CAD AutoCAD. Un fichier DXF décrit un modèle CAD comme du texte brut au format ASCII.

FST 5x20 FST 5x20
FST 5x20 FST 5x20
FST 5x20 FST 5x20
FST 5x20 FST 5x20
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FST 5x20 FST 5x20
FST 5x20 FST 5x20
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FST 5x20 FST 5x20
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Dimension [mm]

Pre-Arcing Time

Rated Current In 1.5 x In min. 2.1 x In max. 2.75 x In min. 2.75 x In max. 4.0 x In min. 4.0 x In max. 10.0 x In min. 10.0 x In max.
0.05 A - 0.1 A 60 min 120 s 200 ms 10 s 40 ms 3 s 10 ms 300 ms
0.125 A - 6.3 A 60 min 120 s 600 ms 10 s 150 ms 3 s 20 ms 300 ms
8 A - 20 A 30 min 120 s 600 ms 10 s 150 ms 3 s 20 ms 300 ms


Time in Seconds
Multiple of Rated Current In

Short Table of Variants FST 5x20 Open complete table FST 5x20

Rated Current [A] Rated Voltage [VAC] Breaking Capacity Order Number A=Most Popular

A=Most Popular

Most popular products have the following customer benefits:
- previously ordered by multiple customers
- generally in stock for immediate delivery
- early adoption or mature life cycle
Contact us for availability on other product variants, lead-times vary:
Contact-Form Availability for all products can be searched real-time. Enter part number and required quantity:
Stock Check SCHURTER

Free Sample

Free Sample

Please ask for free sample in order to check if the products meets your requirement for your application. Send your delivery adress and your specific requirements.

Distributor Stock Check

Distributor Stock Check

The following links refers to the inquiry form for distributors stock information of the selected products. It allows checking for the available amount and optionally to place an order at your selected partner.
The stock availability at the distributors may also be called up separately and the desired product manually entered.
Stock Check Distributor

0.05 250 1) 0034.3104  A  ...
0.063 250 1) 0034.3105  A  ...
0.08 250 1) 0034.3106  A  ...
0.1 250 1) 0034.3107  A  ...
0.125 250 1) 0034.3108  A  ...
0.16 250 1) 0034.3109  A  ...
0.2 250 1) 0034.3110  A  ...
0.25 250 1) 0034.3111  A  ...
0.315 250 1) 0034.3112  A  ...
0.4 250 1) 0034.3113  A  ...
0.5 250 1) 0034.3114  A  ...
0.63 250 1) 0034.3115  A  ...
0.8 250 1) 0034.3116  A  ...
1 250 1) 0034.3117  A  ...
1.25 250 1) 0034.3118  A  ...
1.6 250 1) 0034.3119  A  ...
2 250 1) 0034.3120  A  ...
2.5 250 1) 0034.3121  A  ...
3.15 250 1) 0034.3122  A  ...
4 250 2) 0034.3123  A  ...
5 250 2) 0034.3124  A  ...
6.3 250 2) 0034.3125  A  ...
8 250 2) 0034.3126  A  ...
10 250 2) 0034.3127  A  ...
12.5 250 2) 0034.3128  A  ...
16 250 2) 0034.3129  A  ...
20 250 2) 0034.3130  A  ...

Most Popular.

1) 35 A @ 250 VAC

2) 10 x In @ 250 VAC

Date Sous-catégorie Langue Intitulé Télécharger
PCN Anglais (English) PCN Change of label
Note d'application Anglais (English) Application Note Surge Protection
Fusibles Anglais (English) Packaging Details
Livre blanc Anglais (English) White Paper Fuse Selection
PCS Anglais (English) FST 5x20, FST 5x20 Pigtail PCS
Pigtail Type (1)

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Assembled Fuseholder (0)

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Fuse Kit (2)

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