RS PRO 4A British Standard Fuse, A1, 550V ac, 44.5mm

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Subtotal (1 pack of 5 units)*

£17.58

(exc. VAT)

£21.095

(inc. VAT)

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  • 35 unit(s) ready to ship
  • Plus 285 unit(s) shipping from 07 November 2025
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5 - 20£3.516£17.58
25 - 120£3.116£15.58
125 - 245£2.81£14.05
250 - 495£2.508£12.54
500 +£2.148£10.74

*price indicative

RS Stock No.:
521-2472
Brand:
RS PRO
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Brand

RS PRO

Current Rating

4A

Fuse Size

A1

Voltage Rating

550V ac

Fuse Standard

BS 88, IEC 60269

Fixing Centres

44.5mm

Application Category

gG

Tag Width

11.2mm

High Rupture Capacity

Yes

Overall Length

55mm

Tag Type

Slotted

Body Diameter

13.8mm

Body Length

34.6mm

Tag Orientation

Offset

Body Height

34.6mm

Series

NITD

Fuse Dimensions

13.7 x 55.2mm

RoHS Status: Exempt

COO (Country of Origin):
IN

Eaton NITD Series British Standard Fuse, 4A Current Rating, 550V AC Voltage Rating - NITD4RS


This British Standard Fuse is designed to provide robust protection for electrical circuits. The fuse features a current rating of 4A and a voltage rating of 550V AC, ensuring reliable performance in various applications. Its slotted tag design allows for easy installation, while its high rupture capacity accommodates quick fault response. The fuse dimensions include a body diameter of 13.7mm and an overall length of 55.2mm, making it suitable for standard fittings.

Features & Benefits


• High rupture capacity ensures safe, efficient operation
• gG application category supports diverse industrial uses
• Effective protection against overload and short-circuit faults
• Compact dimensions fit various electrical assemblies

Applications


• Used for electrical protection in automation systems
• Ideal for in the mechanical industry
• Compatible with various electronic circuit designs
• Used in installations requiring reliable circuit safeguarding

What are the advantages of the high rupture capacity in this fuse?


The high rupture capacity enables the fuse to handle fault conditions safely, minimising the risk of damage to electrical components by efficiently interrupting excessive currents.

How does the slotted tag design improve usability in installations?


This design allows for quicker and easier mounting in fuse holders, enhancing installation efficiency and ensuring a secure connection in various applications.

What industry standards does this fuse adhere to and why is that important?


Adherence to BS 88 and IEC 60269 standards guarantees that this fuse meets essential safety and performance criteria, making it suitable for professional use in electrical circuits.

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