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MERSEN FUSE 315B3X BTKM42V315
Heavy-duty BS88 gG type fuse-link rated 315A with 415VAC and 240VDC voltage ratings, featuring a central bolted tag for secure mounting and reliable circuit protection.
£22.84
Why Choose the Mersen BTKM42V315 Industrial Fuse Link?
The Mersen BTKM42V315 is a high-current industrial fuse link designed to provide dependable overcurrent and short-circuit protection for low-voltage electrical distribution systems. Manufactured by Mersen, it offers reliable fault interruption and current-limiting performance for demanding industrial and commercial installations.
This fuse link helps protect cables, switchgear, busbars and connected electrical equipment by safely disconnecting the affected circuit when excessive current occurs. Its robust tagged construction supports secure installation within compatible fuse holders, fuse-switch disconnectors and power distribution assemblies.
With a rated current of 315 A and a nominal voltage class of 415 V AC, the BTKM42V315 is suitable for high-current feeder circuits, industrial machinery, motor control equipment and electrical distribution panels where reliable circuit protection is essential.
Key Advantages
- High-current industrial fuse link for electrical distribution systems.
- 315 A rated current for demanding power applications.
- 415 V AC voltage class suitable for common low-voltage networks.
- Effective current limitation helps reduce damaging fault energy.
- Tagged construction provides secure electrical and mechanical installation.
- Reliable protection for cables, switchgear and distribution equipment.
Key Features
- Mersen BTKM industrial fuse series.
- 315 A rated current.
- 415 V AC nominal voltage class.
- Designed for overload and short-circuit protection.
- Tagged fuse-link construction for secure mounting.
- Current-limiting operation helps minimise equipment damage.
- Single-use protective device with dependable fault interruption.
- Suitable for switchboards, control panels and power distribution equipment.
Reliable Protection for High-Current Electrical Systems
Fuse links such as the Mersen BTKM42V315 protect electrical installations by interrupting potentially damaging overload and short-circuit currents. When the current exceeds the fuse link’s operating threshold, the internal fuse element opens the circuit and limits the energy transferred to cables, switchgear and connected equipment.
The BTKM42V315 is designed for electrical engineers, panel builders, contractors and maintenance professionals requiring reliable high-current protection. Its 315 A rating makes it suitable for substantial feeder circuits and power distribution applications within industrial and commercial installations.
Typical Applications
- Industrial electrical distribution panels.
- Main switchboards and distribution boards.
- Fuse-switch disconnectors.
- Motor control centres.
- Industrial machinery and production equipment.
- High-current feeder circuits and power assemblies.
Technical Specifications
Tick the specs you need, then view products that match.
| Fuse Class | gG | |
|---|---|---|
| Voltage | 415 V | |
| Item number | D226323 | |
| Catalogue No | BTKM42V315 | |
| Description | British Standard fuse-link IEC BS88 gG Type B3X 415VAC 240VDC 315A BTKM Central Bolted Tag | |
| EAN/UPC Code | 3605340268003 | |
| Rated voltage AC IEC | 415 V | |
| Rated voltage DC IEC | 240 V | |
| Ampere Rating | 315 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC/DC | |
| Speed/Characteristic | gG | |
| Fuse Size | B3X | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 756000 A²s | |
| Melting I2t | 270000 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 | 31 W | |
| HS Code | 85361090 | |
| Country of Manufacture | India |
Frequently Asked Questions
What is the Mersen BTKM42V315 used for?
The BTKM42V315 is used to protect high-current electrical circuits, cables, switchgear and distribution equipment against overload and short-circuit currents.
What is the current rating of this fuse link?
The Mersen BTKM42V315 has a rated current of 315 A.
What voltage class is the BTKM42V315 designed for?
The fuse link is identified for a nominal voltage class of 415 V AC.
Where is this fuse link normally installed?
It is normally installed in a compatible fuse holder, fuse-switch disconnector, switchboard or industrial power distribution assembly.
Can the BTKM42V315 be reset after it operates?
No. The BTKM42V315 is a single-use fuse link and must be replaced with a correctly rated replacement after it has operated.
Trusted for Industrial Circuit Protection
Mersen industrial fuse links are used by electrical engineers, panel builders and maintenance professionals to provide dependable fault interruption, effective current limitation and reliable protection for high-current electrical distribution equipment.
