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MERSEN FUSE 355A69C1 BTM69V355
The BTM69V355 fuse-link provides reliable circuit protection for industrial and commercial low-voltage applications up to 690VAC and 460VDC with a gM characteristic for motor and overload protection.
£66.38
Why Choose the Mersen BTM69V355 BS88 Centre Bolted Tag Motor Fuse?
The Mersen BTM69V355 is a heavy-duty BS88 gM centre bolted tag fuse-link designed to provide dependable short-circuit protection for industrial motors and associated electrical equipment. Manufactured in accordance with EN 60269-2 and BS88 Part 2, this fuse-link is specifically engineered for motor circuit protection while allowing the high inrush currents experienced during motor starting.
As part of the trusted Mersen BTM Centre Bolted Tag Motor Fuse range, the BTM69V355 provides excellent current-limiting performance that reduces thermal and mechanical stresses during fault conditions. Its centre bolted tag design enables secure installation directly onto busbars, fuse holders and switch-fuse disconnectors for reliable long-term operation.
Featuring a 355 A current rating with voltage ratings of 690 V AC and 460 V DC, the BTM69V355 is ideally suited for industrial motor starters, motor control centres, switchboards and OEM machinery requiring dependable BS88 motor circuit protection.
Key Advantages
- Industrial BS88 gM centre bolted tag fuse-link.
- 355 A current rating for industrial motor protection.
- 690 V AC and 460 V DC voltage rating.
- Designed specifically for motor short-circuit protection.
- Excellent current-limiting characteristics reduce equipment damage.
- Manufactured to EN 60269-2 and BS88 Part 2 standards.
Key Features
- Mersen BTM centre bolted tag motor fuse-link series.
- 355 A rated current.
- 690 V AC / 460 V DC rated voltage.
- gM motor protection characteristic.
- BS Type C1 centre bolted tag design.
- 80 kA AC breaking capacity.
- 40 kA DC breaking capacity.
- Suitable for direct busbar mounting and BS88 switch-fuse assemblies.
Reliable Protection for Industrial Motor Circuits
The Mersen BTM69V355 is engineered to provide effective short-circuit protection for industrial motor circuits while allowing the temporary high inrush currents associated with motor starting. The gM operating characteristic is intended for coordinated use with a suitable motor overload relay, providing comprehensive motor protection.
Its high fault interruption capability and excellent current-limiting performance help protect contactors, cables, starters and motors from damage during fault conditions, improving system reliability while reducing maintenance costs and downtime.
Typical Applications
- Industrial motor starters.
- Motor control centres (MCCs).
- Industrial switchboards.
- Pump, fan and compressor installations.
- OEM machinery and automation systems.
- Heavy-duty industrial power distribution.
Technical Specifications
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| Fuse Class | gM | |
|---|---|---|
| Voltage | 690 V | |
| Item number | S1006634 | |
| Catalogue No | BTM69V355 | |
| Description | British Standard fuse-link IEC BS88 gM Type C1 690VAC 460VDC 355A BTM Central Bolted Tag | |
| EAN/UPC Code | 3605340485189 | |
| Rated voltage AC IEC | 690 V | |
| Rated voltage DC IEC | 460 V | |
| Ampere Rating | 355 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC/DC | |
| Speed/Characteristic | gM | |
| Fuse Size | C1 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 1975000 A²s | |
| Melting I2t | 395000 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 | 212 mm | |
| Sell Pack Quantity | 1 EA | |
| Sell Pack Weight | 0.69 kg | |
| Sell Pack Width | 67 mm | |
| Sell Pack Length | 210 mm | |
| Sell Pack Height | 60 mm | |
| Product group | Low Voltage IEC Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.69 kg | |
| Power Dissipation at Rated Current Value | 32 W | |
| HS Code | 85361090 | |
| Country of Manufacture | India |
Frequently Asked Questions
What is the Mersen BTM69V355 used for?
The BTM69V355 provides short-circuit protection for industrial motors and associated electrical equipment while allowing normal motor starting currents.
What is the current rating of this fuse?
The Mersen BTM69V355 has a rated current of 355 A.
What voltage is this fuse designed for?
The fuse is rated for 690 V AC and 460 V DC industrial electrical systems.
What does the gM classification mean?
The gM characteristic provides motor short-circuit protection and is designed to be used alongside a separate overload relay for complete motor protection.
Where is the BTM69V355 typically installed?
It is commonly installed in motor starters, motor control centres, switch-fuse units, industrial switchboards and OEM electrical equipment.
Trusted by Electrical Engineers Worldwide
Mersen BS88 motor fuse-links are trusted by electrical engineers, panel builders and OEM manufacturers for delivering dependable motor circuit protection, exceptional fault interruption capability and long-term reliability in demanding industrial environments.
