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MERSEN FUSE A070 URD 33 TTI 1000 A070URD33TTI1000
High-speed fuse engineered for precise protection of sensitive power semiconductors in demanding industrial applications. Features striker indication system and flush end silver-plated brass terminals with UNC threads.
£149.50
Why Choose the Mersen C300451 A070UD33TTI1000 High-Speed Fuse?
The Mersen C300451 A070UD33TTI1000 is a premium Protistor® Size 33 aR square body high-speed semiconductor fuse, engineered to provide exceptional protection for modern power conversion equipment. Designed specifically for safeguarding IGBTs, thyristors, diodes and rectifiers, it delivers ultra-fast fault interruption to minimise damage caused by short circuits and overload conditions.
Manufactured with precision die-cut fuse elements embedded in solidified silica sand, the fuse offers excellent current-limiting performance, low let-through energy and outstanding interrupting capability. Silver-plated contact surfaces and non-magnetic hardware ensure dependable long-term operation, while the integrated striker indicator supports remote status monitoring when used with a compatible microswitch.
Rated at 1000 A with voltage ratings of 690 V AC (IEC) and 700 V AC (UL), the C300451 is ideally suited for industrial drives, UPS systems, renewable energy installations, converters and other demanding semiconductor protection applications. It features flush ends with UNC threaded terminals for secure bolted installation.
Key Advantages
- Ultra-fast aR semiconductor protection.
- 1000 A current rating for demanding industrial applications.
- 690 V AC IEC / 700 V AC UL voltage ratings.
- 200 kA interrupting capacity.
- Integrated striker indicator for remote fuse monitoring.
- Flush ends with UNC threaded terminals for secure bolted mounting.
Key Features
- Mersen Protistor® Size 33 aR series.
- Catalogue number: A070UD33TTI1000.
- Square body ceramic construction.
- Silver-plated contacts.
- Current-limiting design.
- Low I²t characteristics for semiconductor protection.
- RoHS compliant.
- Designed for international industrial applications.
Engineered for Advanced Semiconductor Protection
High-speed semiconductor fuses are specifically designed to interrupt fault currents before sensitive power electronic components can be damaged. Their extremely fast operating characteristics significantly reduce thermal stress and let-through energy, improving equipment reliability while helping minimise costly downtime.
The Protistor® Size 33 range is trusted globally by OEMs, panel builders and industrial engineers for protecting inverters, motor drives, UPS systems, rectifiers and renewable energy equipment operating up to 690 V AC.
Typical Applications
- Variable frequency drives.
- Industrial inverters.
- Motor drives.
- UPS systems.
- Rectifiers.
- Renewable energy converters.
- Industrial automation equipment.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Class | aR | |
| Voltage | 690 V | |
| Item number | C300451 | |
| Catalogue No | A070UD33TTI1000 | |
| Description | Square Body High-Speed Fuse Protistor® Size 33 aR 690VAC IEC 700VAC UL 1000A With Striker Flush ends UNC threads | |
| EAN/UPC Code | 3605340328615 | |
| Rated voltage AC UL | 700 V | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 1000 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 33 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 990 kA²s | |
| Melting I2t | 170 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 Brass | |
| Connection/Terminal Type | Flush ends | |
| Product Width | 73 mm | |
| Product Length | 50.6 mm | |
| Product Height | 78.5 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 2.682 kg | |
| Sell Pack Width | 86 mm | |
| Sell Pack Length | 247 mm | |
| Sell Pack Height | 94 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.894 kg | |
| Power Dissipation at Rated Current Value | 135 W | |
| HS Code | 85361090 |
Frequently Asked Questions
What is the Mersen C300451 used for?
It provides ultra-fast protection for semiconductor devices including IGBTs, thyristors, diodes and rectifiers used in industrial power conversion equipment.
What is the current rating of the C300451?
The Mersen C300451 has a rated current of 1000 A.
What voltage is this fuse designed for?
It is rated for 690 V AC (IEC) and 700 V AC (UL).
What mounting style does the C300451 use?
This model features flush ends with UNC threaded terminals for secure bolted installation.
Does this fuse include a striker indicator?
Yes. The fuse incorporates an integrated striker indicator that can operate a compatible field-mountable microswitch for remote status indication.
Trusted Semiconductor Protection Worldwide
Mersen Protistor® semiconductor fuses are trusted worldwide by equipment manufacturers and industrial engineers for reliable protection of critical power electronic systems.
