Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
MERSEN FUSE 250B3X BTKM42V250
The BTKM42V250 fuse-link offers robust circuit protection for industrial and commercial power distribution systems, rated for 250A at 415V AC and 240V DC with a central bolted tag design.
£22.81
Why Choose the Mersen BTKM42V250 British Standard Fuse-Link?
The Mersen BTKM42V250 is a premium British Standard gG fuse-link engineered to provide dependable full-range overcurrent protection for industrial and commercial electrical installations. Manufactured in accordance with BS 88 Part 2 and EN IEC 60269-2, this central bolted tag fuse-link delivers excellent current limitation, protecting circuits against overloads and short circuits.
Part of the trusted Mersen BTKM Central Bolted Tag fuse-link range, the BTKM42V250 features a robust Type B3X central bolted tag design for secure installation in compatible fuse holders, busbars and fused switch disconnectors. Its heavy-duty construction ensures long service life in demanding industrial environments.
With a 250 A current rating, 415 V AC and 240 V DC voltage ratings, the BTKM42V250 is ideally suited for protecting power distribution systems, switchgear, industrial control equipment and OEM machinery requiring reliable British Standard circuit protection.
Key Advantages
- British Standard gG fuse-link for full-range circuit protection.
- 250 A rated current.
- 415 V AC / 240 V DC voltage rating.
- Manufactured to BS 88 Part 2 and EN IEC 60269-2.
- Excellent current-limiting characteristics minimise equipment damage during faults.
- Central bolted tag Type B3X construction for secure installation.
Key Features
- Mersen BTKM Central Bolted Tag fuse-link series.
- 250 A current rating.
- 415 V AC / 240 V DC rated voltage.
- gG utilisation category for general-purpose protection.
- 80 kA AC breaking capacity.
- 40 kA DC breaking capacity.
- Central Bolted Tag Type B3X mounting.
- Current-limiting design for enhanced protection of electrical equipment.
Reliable Protection for Industrial Electrical Systems
The Mersen BTKM42V250 provides fast and reliable interruption of overload and short-circuit currents, helping protect cables, switchgear and electrical equipment from damage. Its current-limiting performance significantly reduces thermal and mechanical stresses during fault conditions, improving overall system reliability.
Designed for demanding industrial installations, the BTKM42V250 is ideal for use in power distribution panels, switchgear, busbar systems and OEM equipment where dependable British Standard overcurrent protection is essential.
Typical Applications
- Industrial power distribution systems.
- Switchgear and fused switch disconnectors.
- Busbar protection.
- Industrial control panels.
- OEM machinery.
- Commercial and industrial electrical installations.
Technical Specifications
Tick the specs you need, then view products that match.
| Fuse Class | gG | |
|---|---|---|
| Voltage | 415 V | |
| Item number | C226322 | |
| Catalogue No | BTKM42V250 | |
| Description | British Standard fuse-link IEC BS88 gG Type B3X 415VAC 240VDC 250A BTKM Central Bolted Tag | |
| EAN/UPC Code | 3605340267990 | |
| Rated voltage AC IEC | 415 V | |
| Rated voltage DC IEC | 240 V | |
| Ampere Rating | 250 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC/DC | |
| Speed/Characteristic | gG | |
| Fuse Size | B3X | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 532000 A²s | |
| Melting I2t | 190000 A²s | |
| AC Max I.R./Breaking Capacity | I1: 80 kA | |
| Max. Rated Breaking Capacity DC | 40 kA | |
| Connection/Terminal Material | Tin-Plated Copper | |
| Connection/Terminal Type | Central Bolted Tag | |
| Product Diameter | 41.9 mm | |
| Product Length | 159 mm | |
| Sell Pack Quantity | 1 EA | |
| Sell Pack Weight | 0.34 kg | |
| Sell Pack Width | 50 mm | |
| Sell Pack Length | 160 mm | |
| Sell Pack Height | 43 mm | |
| Product group | Low Voltage IEC Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.34 kg | |
| Power Dissipation at Rated Current Value | 24 W | |
| HS Code | 85361090 | |
| Country of Manufacture | India |
Frequently Asked Questions
What is the Mersen BTKM42V250 used for?
It is a British Standard gG fuse-link designed to protect industrial electrical circuits, switchgear and distribution equipment against overloads and short circuits.
What is the current rating of this fuse?
The BTKM42V250 has a 250 A current rating.
What voltage is this fuse rated for?
It is rated for 415 V AC and 240 V DC operation.
Which standards does the BTKM42V250 comply with?
It complies with BS 88 Part 2 and EN IEC 60269-2 for low-voltage industrial fuse-links.
Where is the BTKM42V250 typically installed?
It is commonly installed in compatible British Standard fuse holders, busbar systems, industrial switchgear and electrical distribution equipment.
Trusted for Industrial Circuit Protection
Mersen British Standard fuse-links are trusted worldwide by electrical engineers, panel builders and OEM manufacturers for dependable overcurrent protection, exceptional fault interruption capability and long-term operational reliability.
