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MERSEN FUSE 315B3 BTKF42V315
British Standard fuse-link IEC BS88 gM Type B3 415VAC 240VDC 315M400A BTFK Central Bolted Tag providing reliable circuit protection with high breaking capacity.
£22.81
Why Choose the Mersen BTKF42V315 Industrial Fuse-Link?
The Mersen BTKF42V315 is a heavy-duty 315 A industrial fuse-link designed to provide dependable overcurrent and short-circuit protection in low-voltage power distribution systems. Its high-current capacity makes it suitable for demanding commercial and industrial installations where cables, switchgear and connected equipment require reliable fault protection.
The fuse-link disconnects the protected circuit when current exceeds its designed operating limits, helping to reduce the thermal and mechanical stress caused by electrical faults. Its current-limiting action can also minimise damage to downstream equipment and support effective coordination within the wider protection system.
With a 315 A rated current and a 415 V AC voltage designation, the Mersen BTKF42V315 is suitable for compatible distribution boards, fuse-switch disconnectors, switchgear assemblies and industrial power systems. The fuse-link’s physical dimensions, tag arrangement and operating class should always be checked against the installed fuse carrier before replacement.
Key Advantages
- Heavy-duty fuse-link for high-current industrial circuits.
- 315 A rated current.
- 415 V AC voltage designation.
- Provides protection against overload and short-circuit currents.
- Current-limiting operation helps reduce damaging fault energy.
- Replaceable design supports straightforward maintenance and fault recovery.
- Suitable for compatible industrial fusegear and switchgear assemblies.
Key Features
- Mersen industrial fuse-link.
- 315 A current rating.
- 415 V AC nominal voltage designation.
- Designed for low-voltage power distribution.
- Non-resettable overcurrent protection device.
- Suitable for high-current cable and feeder protection.
- Designed for installation in compatible fuse carriers and fuse-switch equipment.
Reliable Protection for High-Current Distribution Systems
High-current electrical faults can expose cables, busbars and switchgear to severe thermal and mechanical forces. The Mersen BTKF42V315 is designed to interrupt excessive current and isolate the affected circuit before fault energy causes extensive equipment damage.
For safe and effective protection, the fuse-link must be coordinated with the circuit conductors, connected equipment and upstream or downstream protective devices. Replacement should only be carried out after the cause of operation has been identified and the circuit has been made safe.
Typical Applications
- Industrial power distribution systems.
- Main and sub-main feeder protection.
- Commercial distribution boards.
- Fuse-switch disconnectors.
- Industrial switchgear assemblies.
- Cable and busbar protection.
- Machinery and production facilities.
Technical Specifications
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| Fuse Class | gM | |
|---|---|---|
| Voltage | 415 V | |
| Item number | B226321 | |
| Catalogue No | BTKF42V315M400 | |
| Description | British Standard fuse-link IEC BS88 gM Type B3 415VAC 240VDC 315M400A BTFK Central Bolted Tag | |
| EAN/UPC Code | 3605340267983 | |
| Rated voltage AC IEC | 415 V | |
| Rated voltage DC IEC | 240 V | |
| In M Ich | 315M400 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC/DC | |
| Speed/Characteristic | gM | |
| Fuse Size | B3 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 1414000 A²s | |
| Melting I2t | 505000 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 | 0.62 kg | |
| Sell Pack Width | 72 mm | |
| Sell Pack Length | 135 mm | |
| Sell Pack Height | 66 mm | |
| Product group | Low Voltage IEC Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.62 kg | |
| Power Dissipation at Rated Current Value | 30 W | |
| HS Code | 85361090 | |
| Country of Manufacture | India |
Frequently Asked Questions
What is the Mersen BTKF42V315 used for?
The BTKF42V315 is used to protect compatible high-current electrical circuits, cables and distribution equipment against overload and short-circuit currents.
What is the current rating of the BTKF42V315?
The Mersen BTKF42V315 has a rated current of 315 A.
What is the voltage designation of this fuse-link?
The product code indicates a nominal voltage designation of 415 V AC. The confirmed manufacturer rating and application requirements should be checked before installation.
Can the BTKF42V315 be reset after it operates?
No. It is a non-resettable fuse-link and must be replaced with a correctly specified equivalent after the cause of the fault has been investigated.
Can any 315 A fuse-link be used as a replacement?
No. A replacement must match the required current and voltage ratings, operating characteristic, breaking capacity, physical dimensions and tag configuration of the original fuse-link.
Trusted Industrial Circuit Protection
Mersen fuse-links are specified by electrical engineers, panel builders and maintenance professionals for dependable overcurrent protection in industrial and commercial power distribution systems.
