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MERSEN FUSE 6,9 GRB 71 D11A 0125 PC71GB69V125D1A
High-speed gR characteristic fuse for semiconductor protection rated at 690VAC and 125A with striker indication and DIN 110 blade terminals.
£88.91
Why Choose the Mersen B302658 PC71GB69V125D1A High-Speed Fuse?
The Mersen B302658 PC71GB69V125D1A is a premium square body high-speed semiconductor fuse engineered to provide full-range protection for sensitive power electronic equipment. As part of the trusted Mersen Protistor® Size 71 gR 690 VAC series, it is specifically designed to protect semiconductor devices including IGBTs, thyristors, diodes and rectifiers against overloads and short-circuit faults.
Manufactured using pure silver fuse elements embedded in solidified silica sand, this fuse delivers outstanding current-limiting performance, low let-through energy and high breaking capacity. Silver-plated contact surfaces and non-magnetic hardware ensure dependable long-term operation in demanding industrial environments.
With a 125 A current rating and a 690 V AC IEC voltage rating, the B302658 is ideally suited for variable speed drives, industrial converters, UPS systems and power electronics requiring reliable semiconductor protection. The integrated striker indicator enables simple fuse monitoring and maintenance.
Key Advantages
- High-speed gR semiconductor fuse providing full-range protection.
- 125 A rated current for industrial power conversion equipment.
- 690 V AC IEC rated voltage.
- High 150 kA breaking capacity.
- Integrated striker indicator for remote status indication.
- Silver-plated DIN 110 blade terminals provide reliable electrical connections.
Key Features
- Mersen Protistor® Size 71 gR series.
- 125 A rated current.
- 690 V AC IEC operating voltage.
- Square body ceramic fuse construction.
- DIN 110 blade terminals.
- Integrated striker indication system.
- Pure silver fuse elements with solidified silica sand.
- Designed for semiconductor protection applications.
Reliable Protection for Industrial Power Electronics
High-speed semiconductor fuses are engineered to interrupt fault currents before expensive semiconductor devices can be damaged. Their extremely fast operation reduces thermal stress, limits fault energy and helps maximise the reliability of industrial power conversion equipment.
The Mersen Protistor® range is widely specified by OEMs, machine builders and industrial engineers for use in drives, converters, renewable energy systems and other critical power electronic applications requiring dependable circuit protection.
Typical Applications
- Variable frequency drives.
- Industrial power converters.
- UPS systems.
- Motor control centres.
- Renewable energy inverters.
- Industrial automation equipment.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Class | gR | |
| Voltage | 690 V | |
| Item number | B302658 | |
| Catalogue No | PC71GB69V125D1A | |
| Description | Square Body High-Speed Fuse Protistor® Size 71 gR 690VAC IEC 125A With Striker DIN 110 Blades | |
| EAN/UPC Code | 3605340354959 | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 125 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | gR | |
| Fuse Size | 71 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 6.2 kA²s | |
| Melting I2t | 1.06 kA²s | |
| AC Max I.R./Breaking Capacity | I1: 150 kA | |
| Indication System | Yes | |
| Indication System Type | Striker | |
| Connection/Terminal Material | Silver-Plated Copper | |
| Connection/Terminal Type | DIN 110 Blades | |
| Product Width | 51 mm | |
| Product Length | 133.4 mm | |
| Product Height | 56.5 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 1.56 kg | |
| Sell Pack Width | 142 mm | |
| Sell Pack Length | 166 mm | |
| Sell Pack Height | 62 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.52 kg | |
| Power Dissipation at Rated Current Value | 35 W | |
| HS Code | 85361090 | |
| Country of Manufacture | France |
Frequently Asked Questions
What is the Mersen B302658 used for?
It provides full-range protection for semiconductor devices including IGBTs, thyristors, diodes and rectifiers used in industrial power conversion equipment.
What is the current rating of this fuse?
The Mersen B302658 has a rated current of 125 A.
What voltage is this fuse designed for?
It is rated for operation on systems up to 690 V AC IEC.
Does this fuse include a striker indicator?
Yes. The fuse features an integrated striker that can be used with a compatible microswitch for remote indication.
Where is this fuse commonly installed?
It is widely installed in variable speed drives, converters, UPS systems, renewable energy equipment and other industrial power electronic systems.
Trusted for Semiconductor Protection Worldwide
Mersen Protistor® high-speed semiconductor fuses are trusted worldwide by OEMs, panel builders and industrial engineers for reliable protection of critical power electronic equipment.
