Schurter, 1.25A Glass Cartridge Fuse, 5 x 20mm, Speed T

  • RS Stock No. 865-7493
  • Mfr. Part No. 0034.3118.PT
  • Manufacturer Schurter
Technical data sheets
Legislation and Compliance
RoHS Certificate of Compliance
COO (Country of Origin): CN
Product Details

Schurter FST Time-Lag T Fuses

Schurter FST series cartridge fuses are a dependable primary protection device for use in a wide range of applications. The glass body of the cartridge allows for quick identification of incidents and thus allows for quick and easy replacements. Schurter time-lag fuses are useful when looking to avoid nuisance tripping. The FST-series fuses feature a low breaking capacity.


- IEC Standard fuse.

- Low breaking capacity.

- Fuse size 5mm x 20mm


Primary protection in equipment


- IEC 60127-2/3

- UL 60950 / IEC 60950

- UL 248-14

- ITU-T K.20 and K.21

- TIA-968-A



Why choose a glass fuse?
Glass and ceramic fuses have similar properties. However you may choose a glass fuse as it enables you to see the inside of the fuse. Therefore it is easier to determine whether the fuse has blown.

What size is it?
5x20 mm is a standard cartridge size and it measures approximately 20 mm long by 5 mm in diameter. They are popular in board and panel protection and will fit a compatible 5x20 fuse holder.

What Speed is it?
This particular fuse is “T” speed rated which means it is a slow acting fuse, sometimes referred to as anti-surge. It is able to tolerate higher levels for a short period, without shorting. Therefore, if a sudden change occurs, this fuse will not blow immediately. They are suitable for applications where a sudden flow of high current is required.

What is Breaking Capacity?
Breaking capacity is the level of current that the fuse can safely handle without exploding or rupturing. The breaking capacity of your fuse should be greater than the fault current of your electronic circuit. This particular fuse is LBC (Low Breaking Capacity).

Attribute Value
Current Rating 1.25 A
Fuse Size 5 x 20mm
Fuse Speed T
Voltage Rating 250 V ac
Body Material Glass
UL Class UL 248-14
Series FST
Temporarily out of stock - back order for despatch 01/12/2020, delivery within 4 working days from despatch date
Price 1 Pack of 1000
SGD 543.00
(exc. GST)
SGD 581.01
(inc. GST)
Per Pack
Per unit*
1 +
*price indicative
Related Products
Fuse range suitable for a range of domestic ...
Fuse range suitable for a range of domestic requirements.Indicator lamp for instant identification of non-functioning fuses.Each model has the appropriate dimensions to ensure foolproof security.
Professional range of Schurter fuses from the SP ...
Professional range of Schurter fuses from the SP series. The fuses are available in a variety of current ratings. Pigtail TypeNickle Plated Copper Alloy endcapsCeramicCylindricalMounting Style - Holder/Clip.
The 477 Series is the first and smallest ...
The 477 Series is the first and smallest 500VAC and 400VDC fuse under the class of 5x20mm fuse family. It is designed for circuit protection in the area of high energy applications. With its DC and AC characteristics, the 477 ...
Instant reaction fuse - Ceramic body High rupture ...
Instant reaction fuse - Ceramic body High rupture capacity (A) For use with dimmers, Viking terminal blocks and emergency lightning units, transformers Rating : 1 Amps Voltage ∼ : 250 Volts Rupture capacity : 1500 Amps.