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MERSEN FUSE A 070 URD 31 TTI 0350 A070URD31TTI0350
MPN: D300475
Alt. SKU: A070UD31TTI350
Special Price
£78.19
£65.16
Regular Price
£142.16
MERSEN FUSE A 070 URD 31 TTI 0350 A070URD31TTI0350 is available to buy in increments of 3
Why Choose the Square Body High-Speed Fuse Protistor® Size 31 aR 690VAC IEC 700VAC UL 350A With Striker Flush ends UNC threads A070UD31TTI350?
Engineered for demanding industrial and power electronics applications, this Protistor® high-speed fuse delivers reliable short-circuit protection up to 350A at 690VAC (IEC) and 700VAC (UL). Its aR characteristic ensures superior protection for sensitive semiconductor devices, minimising downtime and component damage.
The square body design with striker and flush UNC thread ends allows straightforward installation and instant fault indication, streamlining maintenance. Fully certified to international standards, it supports enhanced safety, operational efficiency, and compliance in critical high-power systems.
Product Code: D300475
Key Benefits
- High-speed aR characteristic for superior semiconductor protection
- Rated for up to 350A at 690VAC (IEC) and 700VAC (UL)
- Square body design with striker for instant fault indication
- Flush ends with UNC threads for secure and easy installation
- Ceramic insulating body ensures durability and safety
- Silver-plated brass terminals for reliable electrical connection
- Compliant with international safety and quality standards
Compatibility
This fuse is compatible with Size 31 fuse holders and mounting systems designed for bolted connections. It is suitable for use in industrial power electronics, semiconductor protection circuits, and high-power electrical installations requiring aR characteristic fuses.
Applications
- Protection of semiconductor devices in industrial power electronics
- High-speed short-circuit protection in motor drives and inverters
- Power distribution systems requiring reliable fault indication
- Critical high-power installations in manufacturing plants
- Switchgear and control panels with bolted fuse mounting
Technical Specifications
- Item number: D300475
- Catalogue No: A070UD31TTI350
- Description: Square Body High-Speed Fuse Protistor® Size 31 aR 690VAC IEC 700VAC UL 350A With Striker Flush ends UNC threads
- EAN/UPC Code: 3605340329049
- Rated voltage AC UL: 700 V
- Rated voltage AC IEC: 690 V
- Ampere Rating: 350 A
- RoHS Compliant: Yes
- AC or DC: AC
- Speed/Characteristic: aR
- Fuse Size: 31
- Mounting: Bolted
- Clearing I2t At Rated Voltage: 61000 A²s
- Melting I2t: 10300 A²s
- AC Max I.R./Breaking Capacity: I1: 200 kA
- Indication System: Yes
- Indication System Type: Striker
- Connection/Terminal Material: Silver-Plated Brass
- Connection/Terminal Type: Flush ends
- Product Width: 51 mm
- Product Length: 50.6 mm
- Product Height: 56.5 mm
- Sell Pack Quantity: 3 EA
- Sell Pack Weight: 1.155 kg
- Sell Pack Width: 85 mm
- Sell Pack Length: 168 mm
- Sell Pack Height: 65 mm
- Product group: Semiconductor Protection Fuses
- Body/Insulating Material: Ceramic
- Product Weight: 0.385 kg
- Power Dissipation at Rated Current Value: 67 W
Frequently Asked Questions
What does the aR characteristic mean?
The aR characteristic indicates a high-speed fuse designed specifically for semiconductor protection, allowing short-circuit interruption while providing selective coordination with upstream devices.
Is this fuse suitable for DC applications?
No, this fuse is rated for AC applications only, as specified in the technical specifications.
How does the striker indication system work?
The striker provides a mechanical indication of fuse operation by releasing a visible striker when the fuse blows, enabling quick visual fault detection without disassembly.
Can this fuse be used in existing Size 31 fuse holders?
Yes, it is designed to fit Size 31 fuse holders with bolted mounting and flush UNC thread ends.
Common Search Terms
high-speed fuse, Protistor fuse, Size 31 fuse, semiconductor protection fuse, aR fuse, 350A fuse, 690VAC fuse, 700VAC fuse, striker fuse, flush end fuse, ceramic body fuse, industrial fuse, power electronics fuse
| Manufacturer Part Number | D300475 |
|---|---|
| Packed Quantity | 3 |
| Barcode | 3605340329049 |
| Height | 50.6mm |
| Width | 51mm |
| Depth | 56.5mm |
| HS Code | 85361090 |
| Country of Manufacture | France |
| Manufacturer | Mersen |
| Alternative Product SKU | A070UD31TTI350 |
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