RS PRO 20A British Standard Fuse, A1, 550V ac, 44.5mm
- RS Stock No.:
- 521-2551
- Brand:
- RS PRO
Bulk discount available
Subtotal (1 pack of 5 units)*
£26.27
(exc. VAT)
£31.525
(inc. VAT)
FREE delivery for orders over £50.00
Temporarily out of stock
- 115 unit(s) shipping from 05 December 2025
- Plus 125 unit(s) shipping from 20 February 2026
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit | Per Pack* |
|---|---|---|
| 5 - 20 | £5.254 | £26.27 |
| 25 - 120 | £4.434 | £22.17 |
| 125 - 245 | £3.86 | £19.30 |
| 250 - 495 | £3.472 | £17.36 |
| 500 + | £3.336 | £16.68 |
*price indicative
- RS Stock No.:
- 521-2551
- 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 | 20A | |
| Fuse Size | A1 | |
| Voltage Rating | 550V ac | |
| Fuse Standard | BS 88, IEC 60269 | |
| Fixing Centres | 44.5mm | |
| Application Category | gM | |
| Tag Width | 11.1mm | |
| High Rupture Capacity | Yes | |
| Overall Length | 55mm | |
| Body Diameter | 17.5mm | |
| Tag Type | Slotted | |
| Body Length | 35.6mm | |
| Tag Orientation | Offset | |
| Body Height | 35.6mm | |
| Fuse Dimensions | 13.7 x 55.2mm | |
| Series | NITD | |
Select all | ||
|---|---|---|
Brand RS PRO | ||
Current Rating 20A | ||
Fuse Size A1 | ||
Voltage Rating 550V ac | ||
Fuse Standard BS 88, IEC 60269 | ||
Fixing Centres 44.5mm | ||
Application Category gM | ||
Tag Width 11.1mm | ||
High Rupture Capacity Yes | ||
Overall Length 55mm | ||
Body Diameter 17.5mm | ||
Tag Type Slotted | ||
Body Length 35.6mm | ||
Tag Orientation Offset | ||
Body Height 35.6mm | ||
Fuse Dimensions 13.7 x 55.2mm | ||
Series NITD | ||
RoHS Status: Exempt
- COO (Country of Origin):
- IN
Eaton NITD Series British Standard Fuse, 20A Current Rating, 550V AC Voltage - NITD20M32RS
This British Standard fuse is designed for high reliability and safety in electrical applications. With a current rating of 20A, this fuse is a vital component for protecting circuits in various settings. The fuse measures 52.2mm in length and has a diameter of 13.7mm, making it compatible with numerous fixtures and systems.
Features & Benefits
• High rupture capacity for enhanced circuit protection
• Offset tag orientation for easy installation
• Rated for operation at 550V AC
• Slotted tag type allows flexible fitting options
• Efficient in the gM application category for reliability
• Offset tag orientation for easy installation
• Rated for operation at 550V AC
• Slotted tag type allows flexible fitting options
• Efficient in the gM application category for reliability
Applications
• Utilised in industrial electrical systems for circuit protection
• Ideal for automation and electronics
• Suitable for use in commercial and domestic electrical installations
•Can be used in machinery to safeguard components
• Ideal for automation and electronics
• Suitable for use in commercial and domestic electrical installations
•Can be used in machinery to safeguard components
What is the significance of the high rupture capacity in this fuse?
The high rupture capacity ensures that the fuse can safely interrupt excessive current without causing explosive or hazardous failures, protecting both the circuit and components effectively.
How does the A1 fuse size benefit installation?
The A1 fuse size makes it a standard size for many electrical applications, allowing for simple replacement and ensuring compatibility with most fuse holders.
What are the primary standards adhered to by this fuse?
This product meets the BS 88 and IEC 60269 standards, ensuring compliance with safety and quality regulations recognised in the electrical industry.
Can this fuse handle surges in current effectively?
Yes, its design and high rupture capacity allow it to manage current surges efficiently, safeguarding connected devices from damage during unexpected overloads.
Related links
- RS PRO 20A British Standard Fuse 550V ac, 44.5mm
- Eaton 20A British Standard Fuse 550V ac, 44.5mm
- RS PRO 25A British Standard Fuse 550V ac, 44.5mm
- RS PRO 2A British Standard Fuse 550V ac, 44.5mm
- RS PRO 6A British Standard Fuse 550V ac, 44.5mm
- RS PRO 4A British Standard Fuse 550V ac, 44.5mm
- RS PRO 16A British Standard Fuse 550V ac, 44.5mm
- RS PRO 10A British Standard Fuse 550V ac, 44.5mm
