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 315M400A69B4 BTMF69V315M400
British Standard fuse-link IEC BS88 gM Type B4 690VAC 460VDC 315M400A BTMF Central Bolted Tag designed for reliable motor circuit protection in industrial and commercial low voltage systems.
£66.27
Why Choose the Mersen BTMF69V315M400 Industrial Fuse Link?
The Mersen BTMF69V315M400 is a high-current industrial fuse link designed to provide dependable protection for low-voltage electrical distribution systems. Manufactured by Mersen, it helps protect cables, conductors, switchgear and connected equipment by interrupting excessive current during overload and short-circuit conditions.
The BTMF69V315M400 is intended for demanding industrial installations where reliable fault protection and effective current limitation are essential. By restricting the peak current and electrical energy released during a fault, the fuse can help reduce thermal and mechanical stress on downstream equipment.
With a rated current of 315 A and a voltage rating of up to 690 V AC, the BTMF69V315M400 is suitable for high-capacity distribution circuits, industrial switchboards, machinery supplies and feeder applications. Its bolted-tag construction provides a secure electrical and mechanical connection within compatible fuse holders and fused switching equipment.
Key Advantages
- Dependable protection for high-current industrial circuits.
- 315 A rated current for demanding distribution applications.
- 690 V AC rating for industrial low-voltage systems.
- Protection against overload and short-circuit currents.
- Current-limiting operation helps reduce damaging fault energy.
- Bolted-tag terminals provide a secure electrical connection.
Key Features
- Mersen BTMF industrial fuse-link series.
- 315 A rated current.
- 690 V AC rated voltage.
- Designed for high-current electrical distribution systems.
- Robust bolted-tag terminal configuration.
- Effective interruption of excessive fault current.
- Current-limiting performance during short circuits.
- Suitable for compatible fuse switches and fuse holders.
Reliable Protection for High-Current Electrical Systems
The Mersen BTMF69V315M400 is designed to disconnect an electrical circuit when current rises beyond safe operating limits. This helps prevent excessive heat, conductor damage and serious faults within switchgear, distribution equipment and connected machinery.
During a high-level short circuit, the fuse limits the peak current and total energy passing through the protected circuit. Correct selection and coordination with the associated fuse holder, switching device and downstream equipment can help improve installation safety, reduce equipment damage and minimise unplanned downtime.
Typical Applications
- Industrial power distribution systems.
- Main switchboards and distribution panels.
- Cable, busbar and feeder circuit protection.
- Industrial machinery and manufacturing equipment.
- Fuse switches and switch-disconnectors.
- Commercial and industrial electrical installations.
Technical Specifications
Tick the specs you need, then view products that match.
| Fuse Class | gM | |
|---|---|---|
| Voltage | 690 V | |
| Item number | N1006630 | |
| Catalogue No | BTMF69V315M400 | |
| Description | British Standard fuse-link IEC BS88 gM Type B4 690VAC 460VDC 315M400A BTMF Central Bolted Tag | |
| EAN/UPC Code | 3605340485158 | |
| Rated voltage AC IEC | 690 V | |
| Rated voltage DC IEC | 460 V | |
| In M Ich | 315M400 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC/DC | |
| Speed/Characteristic | gM | |
| Fuse Size | B4 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 2525000 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 | 59.1 mm | |
| Product Length | 138 mm | |
| Sell Pack Quantity | 1 EA | |
| Sell Pack Weight | 0.617 kg | |
| Sell Pack Width | 70 mm | |
| Sell Pack Length | 137 mm | |
| Sell Pack Height | 62 mm | |
| Product group | Low Voltage IEC Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.617 kg | |
| Power Dissipation at Rated Current Value | 30 W | |
| HS Code | 85361090 | |
| Country of Manufacture | India |
Frequently Asked Questions
What is the Mersen BTMF69V315M400 used for?
The BTMF69V315M400 is used to protect high-current industrial circuits, cables, switchgear and connected equipment against overloads and short circuits.
What is the current rating of the BTMF69V315M400?
The Mersen BTMF69V315M400 has a rated current of 315 A.
What voltage is the BTMF69V315M400 rated for?
The fuse link is intended for electrical systems operating at up to 690 V AC.
How does the BTMF69V315M400 protect electrical equipment?
The fuse interrupts excessive current during overload or short-circuit conditions and limits the fault energy passing through the protected circuit.
Where is the BTMF69V315M400 typically installed?
The BTMF69V315M400 is typically installed in compatible industrial fuse holders, fuse switches or switch-disconnectors within high-current power distribution systems.
Trusted for Industrial Power Protection
Mersen industrial fuse links are trusted by electrical engineers, panel builders and maintenance professionals for dependable fault interruption, effective current limitation and reliable performance in demanding electrical installations.
