Eaton 4A T Ceramic Cartridge Fuse, 5 x 20mm

Bulk discount available

Subtotal (1 pack of 10 units)*

£1.59

(exc. VAT)

£1.91

(inc. VAT)

Add to Basket
Select or type quantity
In Stock
  • 497 unit(s) ready to ship
  • Plus 215 unit(s) ready to ship from another location
  • Plus 1,650 unit(s) shipping from 09 October 2025
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Pack(s)
Per Pack
Per unit*
1 - 4£1.59£0.159
5 - 9£1.50£0.15
10 - 49£1.41£0.141
50 +£1.30£0.13

*price indicative

Alternative

This product is not currently available. Here is our alternative recommendation.

Each (In a Pack of 10)

£0.282

(exc. VAT)

£0.338

(inc. VAT)

RS Stock No.:
537-1105
Mfr. Part No.:
S505-4-R
Brand:
Eaton
Find similar products by selecting one or more attributes.
Select all

Brand

Eaton

Current Rating

4A

Fuse Size

5 x 20mm

Fuse Speed

T

Voltage Rating

250V ac

Body Material

Ceramic

COO (Country of Origin):
CN

Eaton Bussmann Series Anti Surge (T) HBC – Ceramic Bodied, 5 x 20 mm


Eaton Bussmann anti-surge ceramic cartridge fuses are designed to prevent damage to electrical equipment. These fuses allow an electric current to flow through until the current goes over the fuse's rating then it will blow and stop the flow of electricity. This range of ceramic cartridge fuses is 5 x 20mm with a T speed rating.

Why choose ceramic cartridge fuse?

Ceramic and glass cartridge fuses have similar properties. The capacity of a ceramic cartridge fuse is higher than other fuses, which means that ceramic fuses can be used in circuits that have a higher current rating. They are perfect for protecting against overheating.

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 mm 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 voltage is it?

These cartridge fuses are available with 0.5 to 12 Amp current ratings for applications where the system voltage rating is 250 Volts AC.

What is Breaking Capacity?

Breaking capacity is the level of current that the fuse can safely handle without exploding or breaking. The breaking capacity of your fuse should be greater than the fault current of your electronic circuit.

What are cartridge fuses used for?

• For the protection of components and equipment from costly damage used by over-current
• To isolate sub-systems from the main system once a fault has appeared

What is an overcurrent?

It is a setting where a circuit experiences a current that is higher than the normal operating current.

Note

Eaton formerly known as Bussmann

Related links