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MERSEN FUSE 6,9 URD 33 D08 A 0450 PC33UD69V450A
High-speed aR characteristic fuse with integrated striker indication and DIN 80 blade terminals, rated for 450A at 690VAC IEC and 700VAC UL standards, designed for semiconductor protection in industrial power electronics.
£94.67
Why Choose the Mersen T302168 Semiconductor Fuse?
The Mersen T302168 is a high-speed aR semiconductor protection fuse designed to provide exceptional short-circuit protection for modern power semiconductor devices. Part of Mersen's renowned Protistor® range, this square body fuse is rated at 450 A, 690 VAC (IEC) and 700 VAC (UL), featuring a Size 33 body with DIN 80 blade terminals and an integrated striker for indication or microswitch operation. It is specifically engineered to protect IGBTs, thyristors, SCRs and diode modules used in demanding power conversion equipment.
Protistor® semiconductor fuses are manufactured using precision die-cut fuse elements embedded within solidified silica sand to deliver extremely low let-through energy (I²t), rapid fault interruption and high breaking capacity. Silver-plated contacts and non-magnetic hardware further enhance reliability in demanding industrial environments.
The Mersen T302168 is ideal for OEM equipment, industrial maintenance and replacement applications where this exact manufacturer reference has been specified. Always verify the electrical ratings and mounting arrangement before installation.
Key Advantages
- Genuine Mersen Protistor® semiconductor protection fuse.
- Ultra-fast aR operating characteristic.
- Rated 450 A.
- Rated 690 VAC IEC / 700 VAC UL.
- High interrupting capacity of 200 kA.
- Integrated striker for remote indication or microswitch operation.
Key Features
- Manufacturer: Mersen
- Part number: T302168
- Catalogue number: PC33UD69V450A.
- Protistor® Size 33 square body construction.
- aR semiconductor protection characteristic.
- DIN 80 blade terminals.
- Silver-plated contact surfaces.
- Integrated striker (trip indicator).
- Designed for semiconductor device protection.
- RoHS compliant.
Designed for Modern Power Electronics
Power electronic equipment requires extremely rapid fault interruption to prevent catastrophic semiconductor damage. The Mersen T302168 has been engineered to minimise let-through energy while providing dependable protection for sensitive semiconductor devices operating in industrial power conversion systems.
Typical applications include variable speed drives, industrial inverters, UPS systems, DC drives, rectifiers, renewable energy converters, battery storage systems and other equipment incorporating high-power semiconductor devices.
Typical Applications
- Variable speed drives (VSDs).
- Industrial inverters.
- UPS systems.
- Power converters.
- Rectifiers.
- Soft starters.
- Renewable energy power conversion equipment.
- OEM industrial machinery.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | D / D0 (Neozed/Diazed), Semiconductor | |
| Fuse Class | aR | |
| Voltage | 690 V | |
| Item number | T302168 | |
| Catalogue No | PC33UD69V450A | |
| Description | Square Body High-Speed Fuse Protistor® Size 33 aR 690VAC IEC 700VAC UL 450A With Striker DIN 80 Blades | |
| EAN/UPC Code | 3605340351255 | |
| Rated voltage AC UL | 700 V | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 450 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 33 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 87 kA²s | |
| Melting I2t | 13.45 kA²s | |
| AC Max I.R./Breaking Capacity | I1: 200 kA | |
| Design Details | Standard Terminal | |
| Indication System | Yes | |
| Indication System Type | Striker | |
| Connection/Terminal Material | Silver-Plated Copper | |
| Connection/Terminal Type | DIN 80 Blades | |
| Product Width | 73 mm | |
| Product Length | 110 mm | |
| Product Height | 78.5 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 2.4369 kg | |
| Sell Pack Width | 145 mm | |
| Sell Pack Length | 250 mm | |
| Sell Pack Height | 90 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.8123 kg | |
| Power Dissipation at Rated Current Value | 88 W | |
| HS Code | 85361090 |
Frequently Asked Questions
What is the Mersen T302168 used for?
The T302168 is a high-speed aR semiconductor protection fuse designed to protect IGBTs, SCRs, thyristors and diode modules against short-circuit faults.
What are the electrical ratings of the T302168?
The fuse is rated at 450 A, 690 VAC (IEC) and 700 VAC (UL) with a breaking capacity of 200 kA AC.
Does the Mersen T302168 include a striker?
Yes. The fuse incorporates an integrated striker which can provide visual indication or operate a compatible microswitch after fuse operation.
What does the aR fuse classification mean?
An aR fuse provides partial-range protection specifically designed for semiconductor devices, delivering extremely rapid interruption of high fault currents.
Where is the T302168 commonly installed?
It is commonly installed within variable speed drives, converters, UPS systems, industrial inverters, rectifiers 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.
