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 6,9 URD 32 TT F 0900 6,9URD32TTF0900
High-speed aR fuse with 900A rating, IEC 690VAC and UL 700VAC compliance, featuring striker indication and metric-threaded flush ends for bolted mounting.
£132.16
Why Choose the Mersen Q300072 Protistor® High-Speed Fuse?
The Mersen Q300072 is a genuine Protistor® Size 32 square body high-speed semiconductor fuse engineered to deliver outstanding protection for sensitive power electronic equipment operating in demanding industrial environments. Identified by the catalogue number PC32UD69V900TF, this ultra-fast aR characteristic fuse-link is specifically designed to protect semiconductors including IGBTs, thyristors and diodes against damaging short-circuit currents.
Part of the proven Mersen Protistor® Size 32 range, the Q300072 combines rapid fault clearing, low let-through energy and a high breaking capacity to maximise equipment reliability while reducing costly downtime. Its robust ceramic square body, silver-plated contacts and integrated striker indicator make it ideal for industrial automation and power conversion systems.
With a 900 A current rating, 690 V AC IEC and 700 V AC UL voltage rating, the Mersen Q300072 provides dependable protection for variable speed drives, UPS systems, inverters, converters, motor drives and other semiconductor-based equipment.
Key Advantages
- Genuine Mersen Protistor® semiconductor protection fuse.
- 900 A current rating for demanding industrial applications.
- 690 V AC IEC / 700 V AC UL rated operation.
- Ultra-fast aR operating characteristic for semiconductor protection.
- Integrated striker indicator for quick fuse status identification.
- High breaking capacity protects valuable power electronic equipment.
Key Features
- Mersen Protistor® Size 32 series.
- Manufacturer part number: Q300072.
- Catalogue number: PC32UD69V900TF.
- 900 A rated current.
- 690 V AC IEC / 700 V AC UL voltage rating.
- aR ultra-fast operating characteristic.
- Square body ceramic construction with silver-plated contacts.
- Flush-end metric threaded terminals with integrated striker.
Advanced Semiconductor Protection
High-speed semiconductor fuses are specifically developed to protect sensitive power electronic devices from destructive fault currents before permanent damage can occur. Their exceptionally low let-through energy helps extend equipment life, reduce maintenance costs and minimise unplanned downtime.
The Mersen Protistor® range is trusted worldwide for protecting variable frequency drives, UPS systems, rectifiers, converters, soft starters and renewable energy equipment where dependable semiconductor protection is essential.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor drives.
- Power converters and inverters.
- UPS systems.
- Renewable energy power conversion equipment.
- Semiconductor protection in industrial automation systems.
Technical Specifications
Tick the specs you need, then view products that match.
| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Class | aR | |
| Voltage | 690 V | |
| Item number | Q300072 | |
| Catalogue No | PC32UD69V900TF | |
| Description | Square Body High-Speed Fuse Protistor® Size 32 aR 690VAC IEC 700VAC UL 900A With Striker Flush ends metric threads | |
| EAN/UPC Code | 3605340323047 | |
| Rated voltage AC UL | 700 V | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 900 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 32 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 990 kA²s | |
| Melting I2t | 165 kA²s | |
| AC Max I.R./Breaking Capacity | I1: 200 kA | |
| Design Details | Reinforced Terminal | |
| Indication System | Yes | |
| Indication System Type | Striker | |
| Connection/Terminal Material | Silver-Plated Brass | |
| Connection/Terminal Type | Flush ends | |
| Product Width | 59 mm | |
| Product Length | 50.6 mm | |
| Product Height | 65 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 1.6389 kg | |
| Sell Pack Width | 85 mm | |
| Sell Pack Length | 195 mm | |
| Sell Pack Height | 75 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.5463 kg | |
| Power Dissipation at Rated Current Value | 110 W | |
| HS Code | 85361090 | |
| Country of Manufacture | France |
Frequently Asked Questions
What is the Mersen Q300072 used for?
The Mersen Q300072 protects semiconductor devices such as IGBTs, thyristors and diodes from damaging short-circuit currents in industrial power conversion equipment.
What is the current rating of the Q300072?
The fuse has a 900 A rated current.
What voltage is this fuse designed for?
The Q300072 is rated for 690 V AC (IEC) and 700 V AC (UL).
What does the aR characteristic mean?
The aR operating characteristic provides ultra-fast protection specifically for semiconductor devices against short-circuit faults.
Does the fuse include an indicator?
Yes. The Q300072 incorporates an integrated striker indicator to simplify fuse monitoring and maintenance.
Trusted Semiconductor Protection Worldwide
Mersen Protistor® semiconductor fuses are trusted by OEMs, panel builders and industrial engineers to provide reliable protection for modern power electronic equipment operating in demanding industrial environments.
