Eaton 20A British Standard Fuse, A1, 550V ac, 42.5mm
- RS Stock No.:
- 139-883
- Mfr. Part No.:
- NITD20M25
- Brand:
- Eaton
Image representative of range
Bulk discount available
Subtotal (1 pack of 5 units)*
£18.60
(exc. VAT)
£22.30
(inc. VAT)
FREE delivery for orders over £50.00
Temporarily out of stock
- Shipping from 26 November 2025
Need more? Click ‘Check delivery dates’ to find extra stock and lead times.
Units | Per unit | Per Pack* |
|---|---|---|
| 5 - 20 | £3.72 | £18.60 |
| 25 - 120 | £3.35 | £16.75 |
| 125 - 245 | £3.16 | £15.80 |
| 250 - 495 | £2.792 | £13.96 |
| 500 + | £2.606 | £13.03 |
*price indicative
- RS Stock No.:
- 139-883
- Mfr. Part No.:
- NITD20M25
- Brand:
- Eaton
Specifications
Technical Reference
Legislation and Compliance
Product Details
Find similar products by selecting one or more attributes.
Select all | Attribute | Value |
|---|---|---|
| Brand | Eaton | |
| Current Rating | 20A | |
| Fuse Size | A1 | |
| Voltage Rating | 550V ac | |
| Fuse Standard | BS 88, IEC 269 | |
| Fixing Centres | 42.5mm | |
| Application Category | gG - gM | |
| Tag Width | 11.1mm | |
| High Rupture Capacity | Yes | |
| Overall Length | 55mm | |
| Tag Type | Bolted | |
| Body Diameter | 13.7mm | |
| Tag Orientation | Offset | |
| Body Length | 34.6mm | |
| Body Width | 14mm | |
| Body Height | 13.7mm | |
| Fuse Dimensions | 13.7 x 34.6mm | |
Select all | ||
|---|---|---|
Brand Eaton | ||
Current Rating 20A | ||
Fuse Size A1 | ||
Voltage Rating 550V ac | ||
Fuse Standard BS 88, IEC 269 | ||
Fixing Centres 42.5mm | ||
Application Category gG - gM | ||
Tag Width 11.1mm | ||
High Rupture Capacity Yes | ||
Overall Length 55mm | ||
Tag Type Bolted | ||
Body Diameter 13.7mm | ||
Tag Orientation Offset | ||
Body Length 34.6mm | ||
Body Width 14mm | ||
Body Height 13.7mm | ||
Fuse Dimensions 13.7 x 34.6mm | ||
RoHS Status: Exempt
Eaton British Standard Fuse, High Rupture Capacity, Offset Bolted Tag Mounting Type - NITD Series - NITD20M25
Safeguard your switchgear against electrical spikes using this British Standard fuse from Eaton. Thanks to its rated breaking capacity of 80kA, you can rest assured it protects your setup from powerful surges, which minimises the chance of equipment blowouts. This is a practical option for protecting components such as relays and contactors in commercial and industrial power distribution systems. For effortless assembly, the unit has offset bolted tags that make it a cinch to mount or remove from a fuse holder.
Features & Benefits
• Simply replace with new fuse once blown, for efficient electrical safety
• Supplied in a pack of 5 to keep you stocked up
• Low-temperature rise allows for high packing density in complex systems
• Minimal power loss of 2W, so doesn't impact on the supply to your circuit
• Supplied in a pack of 5 to keep you stocked up
• Low-temperature rise allows for high packing density in complex systems
• Minimal power loss of 2W, so doesn't impact on the supply to your circuit
Does this British Standard fuse stop overcurrent?
Yes, as this is a high rupture capacity fuse, you can count on it to safely break overcurrent.
What does this unit's gM class rating indicate?
A class gM fuse like this one is suited to general motor protection, as it can handle a motor's starting current without false tripping.
Note
Eaton formerly known as Bussmann
Related links
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