RS PRO 4A British Standard Fuse A1 550V ac, 44.5 mm
- RS Stock No.:
- 521-2472
- Brand:
- RS PRO
Bulk discount available
Subtotal (1 pack of 5 units)*
£18.26
(exc. VAT)
£21.91
(inc. VAT)
FREE delivery for orders over £60.00
In Stock
- 440 unit(s) ready to ship
- Plus 345 unit(s) shipping from 29 October 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit | Per Pack* |
|---|---|---|
| 5 - 20 | £3.652 | £18.26 |
| 25 - 120 | £3.236 | £16.18 |
| 125 - 245 | £2.918 | £14.59 |
| 250 - 495 | £2.604 | £13.02 |
| 500 + | £2.232 | £11.16 |
*price indicative
- RS Stock No.:
- 521-2472
- Brand:
- RS PRO
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | RS PRO | |
| Current Rating | 4A | |
| Product Type | British Standard Fuse | |
| Fuse Size | A1 | |
| Voltage | 550V ac | |
| Standards/Approvals | No | |
| Fixing Centres | 44.5 mm | |
| Application Category | gG | |
| Tag Width | 11.2mm | |
| High Rupture Capacity | Yes | |
| Overall Length | 55mm | |
| Length | 55.2mm | |
| Width | 34.6mm | |
| Height | 42.5mm | |
| Series | STD | |
| Select all | ||
|---|---|---|
Brand RS PRO | ||
Current Rating 4A | ||
Product Type British Standard Fuse | ||
Fuse Size A1 | ||
Voltage 550V ac | ||
Standards/Approvals No | ||
Fixing Centres 44.5 mm | ||
Application Category gG | ||
Tag Width 11.2mm | ||
High Rupture Capacity Yes | ||
Overall Length 55mm | ||
Length 55.2mm | ||
Width 34.6mm | ||
Height 42.5mm | ||
Series STD | ||
RoHS Status: Exempt
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.