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MERSEN FUSE 250B3 BTKF42V250
Robust BS88 gG Type B3 fuse-link rated at 250A for AC/DC applications with central bolted tag mounting, compliant with IEC and BS88 standards.
£21.26
Why Choose the Mersen BTKF42V250 BS88 Fuse Link?
The Mersen BTKF42V250 is a high performance BS88 gG central bolted tag fuse link designed to provide dependable general-purpose protection for low voltage electrical distribution systems. Manufactured by Mersen, this industrial fuse link delivers reliable overload and short-circuit protection while offering excellent current limiting characteristics for demanding electrical installations.
Manufactured in accordance with BS88 Part 2 and EN 60269-2, the BTKF42V250 is designed for installation in compatible fuse holders, fuse switch disconnectors or directly onto busbars using its central bolted tag configuration. Its robust ceramic construction ensures dependable performance in commercial, industrial and OEM applications.
With a 250 A current rating, 415 V AC / 240 V DC voltage rating and gG utilisation category, the BTKF42V250 provides comprehensive circuit protection for electrical distribution equipment, switchgear and industrial power systems.
Key Advantages
- High performance BS88 gG central bolted tag fuse link.
- 250 A current rating for industrial electrical protection.
- 415 V AC and 240 V DC voltage rating.
- Excellent current limiting performance for overload and short-circuit protection.
- Manufactured to BS88 Part 2 and EN 60269-2 standards.
- Suitable for switchgear, busbars, distribution boards and fuse switch disconnectors.
Key Features
- Mersen BTKF Series.
- 250 A rated current.
- 415 V AC / 240 V DC rated voltage.
- gG general-purpose protection.
- Central bolted tag Type B3 construction.
- High breaking capacity ceramic fuse body.
- Excellent current limiting characteristics.
- Suitable for direct busbar mounting or compatible fuse holders.
Reliable Protection for Industrial Power Distribution
The Mersen BTKF42V250 is engineered to interrupt overload and fault currents rapidly, protecting electrical equipment, cables and switchgear from damage. Its current limiting design reduces thermal and mechanical stress during fault conditions, helping improve system reliability and minimise downtime.
Widely specified by electrical engineers, panel builders and industrial maintenance professionals, the BTKF series delivers dependable protection across a broad range of commercial and industrial electrical distribution applications.
Typical Applications
- Industrial electrical distribution systems.
- Switchgear and fuse switch disconnectors.
- Power distribution panels.
- Busbar protection.
- OEM machinery and equipment.
- Commercial electrical installations.
Technical Specifications
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| Fuse Class | gG | |
|---|---|---|
| Voltage | 415 V | |
| Item number | Z226319 | |
| Catalogue No | BTKF42V250 | |
| Description | British Standard fuse-link IEC BS88 gG Type B3 415VAC 240VDC 250A BTKF Central Bolted Tag | |
| EAN/UPC Code | 3605340267969 | |
| 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 | B3 | |
| 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 | 138 mm | |
| Sell Pack Quantity | 1 EA | |
| Sell Pack Weight | 0.305 kg | |
| Sell Pack Width | 53 mm | |
| Sell Pack Length | 142 mm | |
| Sell Pack Height | 53 mm | |
| Product group | Low Voltage IEC Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.305 kg | |
| Power Dissipation at Rated Current Value | 24 W | |
| HS Code | 85361090 | |
| Country of Manufacture | India |
Frequently Asked Questions
What is the Mersen BTKF42V250 used for?
The BTKF42V250 provides general-purpose overload and short-circuit protection for industrial and commercial low voltage electrical distribution systems.
What is the current rating of this fuse?
This fuse has a 250 A rated current.
What voltage is the BTKF42V250 designed for?
The fuse is rated for applications up to 415 V AC and 240 V DC.
Which standards does this fuse comply with?
The BTKF42V250 complies with BS88 Part 2 and EN 60269-2 standards for low voltage fuse links.
Where is this fuse typically installed?
It is commonly installed in compatible fuse holders, fuse switch disconnectors or bolted directly onto busbars in industrial power distribution equipment.
Trusted by Electrical Professionals Worldwide
Mersen BS88 fuse links are trusted by electrical engineers, panel builders and maintenance professionals for delivering dependable circuit protection, high breaking capacity and long-term reliability in industrial power distribution systems.
