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MERSEN FUSE 6,9 GRB 72 D11A 0250 PC72GB69V250D1A
Protistor® high-speed fuse offering reliable circuit protection with a 250A rating at 690VAC, integrated striker, and DIN 110 blade mounting.
£92.94
Why Choose the Mersen T302697 Semiconductor Fuse?
The Mersen T302697 is a high-speed gR semiconductor protection fuse from the renowned Protistor® range, engineered to provide full-range protection against overloads and short circuits in power semiconductor applications. This Size 72 square body fuse is rated at 250 A and 690 VAC, and features DIN 110 blade terminals with an integrated striker for remote indication or microswitch operation. It is specifically designed to protect sensitive power electronic devices including IGBTs, diodes, SCRs and thyristors in demanding industrial applications.
Manufactured using precision die-cut pure silver fuse elements embedded in solidified silica sand, the T302697 delivers extremely low let-through energy (I²t), high interrupting capacity and rapid fault clearing. Silver-plated contacts and non-magnetic hardware ensure dependable long-term performance in industrial environments.
The Mersen T302697 is ideal for OEM equipment, industrial maintenance and replacement applications where this exact manufacturer reference has been specified. Always verify the required electrical ratings and mounting arrangement before installation.
Key Advantages
- Genuine Mersen Protistor® semiconductor protection fuse.
- Full-range gR semiconductor protection.
- Rated 250 A.
- Rated operating voltage of 690 VAC.
- High interrupting capacity of 150 kA AC.
- Integrated striker for indication or auxiliary microswitch operation.
Key Features
- Manufacturer: Mersen
- Part number: T302697
- Catalogue number: PC72GB69V250D1A
- Protistor® Size 72 square body construction.
- gR full-range semiconductor protection characteristic.
- DIN 110 blade terminals.
- Integrated striker (trip indicator).
- Silver-plated contact surfaces.
- Designed for semiconductor protection applications.
- RoHS compliant.
Designed for Power Semiconductor Protection
The Mersen T302697 has been engineered to provide full-range protection for modern semiconductor devices by rapidly interrupting overloads and high fault currents before damage can occur. Its low let-through energy helps maximise equipment reliability while reducing downtime and maintenance costs.
Typical installations include variable speed drives, industrial inverters, UPS systems, rectifiers, converters, renewable energy equipment and other power electronic systems using high-value semiconductor devices.
Typical Applications
- Variable speed drives (VSDs).
- Industrial inverters.
- UPS systems.
- Power converters.
- Rectifiers.
- Renewable energy systems.
- Motor drives and soft starters.
- OEM industrial machinery.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Class | gR | |
| Voltage | 690 V | |
| Item number | T302697 | |
| Catalogue No | PC72GB69V250D1A | |
| Description | Square Body High-Speed Fuse Protistor® Size 72 gR 690VAC IEC 250A With Striker DIN 110 Blades | |
| EAN/UPC Code | 3605340355369 | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 250 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | gR | |
| Fuse Size | 72 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 50 kA²s | |
| Melting I2t | 8.6 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 | 59 mm | |
| Product Length | 133.4 mm | |
| Product Height | 63 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 2.1999 kg | |
| Sell Pack Width | 145 mm | |
| Sell Pack Length | 73 mm | |
| Sell Pack Height | 195 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.7333 kg | |
| Power Dissipation at Rated Current Value | 50 W | |
| HS Code | 85361090 | |
| Country of Manufacture | France |
Frequently Asked Questions
What is the Mersen T302697 used for?
The Mersen T302697 is a high-speed gR semiconductor fuse designed to provide full-range protection for power semiconductor devices against overloads and short-circuit faults.
What are the electrical ratings of the T302697?
The fuse is rated at 250 A, 690 VAC with a rated breaking capacity of 150 kA AC.
What does the gR fuse classification mean?
A gR fuse provides full-range semiconductor protection, offering protection against both overload and short-circuit conditions for sensitive power electronic devices.
Does the T302697 include a striker?
Yes. The fuse includes an integrated striker which can provide visual indication or operate a compatible microswitch after fuse operation.
Where is the T302697 commonly installed?
It is commonly installed in variable speed drives, UPS systems, converters, rectifiers, industrial inverters and other semiconductor-based power conversion equipment.
Trusted Semiconductor Protection
Mersen Protistor® semiconductor fuses are trusted worldwide by equipment manufacturers, panel builders and maintenance engineers for protecting critical power electronic systems in demanding industrial environments.
