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MERSEN FUSE A 070 URD 31 KI 0350 A070URD31KI0350
MPN: R300050
Alt. SKU: A070UD31KI350
Special Price
£84.48
£70.40
Regular Price
£153.60
MERSEN FUSE A 070 URD 31 KI 0350 A070URD31KI0350 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 Slotted Blades (A070UD31KI350)?
Engineered for critical protection of power electronic equipment, this high-speed fuse features a robust 350A rating and is fully compliant with IEC 690VAC and UL 700VAC standards. Its size 31 square body ensures reliable performance in high-fault conditions, maximising operational safety and asset longevity.
The integrated striker function enables remote signalling of fuse status for easier system monitoring, while slotted blades provide secure installation and enhanced electrical connectivity. Ideal for demanding industrial applications, this fuse delivers fast, dependable circuit protection to minimise downtime and safeguard sensitive components.
Product Code: R300050
Key Benefits
- High-speed aR characteristic ensures rapid disconnection of fault currents to protect sensitive semiconductor devices.
- Robust ceramic body provides excellent thermal and mechanical stability under high fault conditions.
- Integrated striker indication system allows for remote fuse status monitoring, improving maintenance efficiency.
- Slotted silver-plated copper blades ensure secure and reliable electrical connections with bolted mounting.
- Compliant with IEC 690VAC and UL 700VAC standards, guaranteeing compatibility with international systems.
- High breaking capacity of 200 kA ensures safe interruption of high fault currents without damage.
Compatibility
This fuse is compatible with power electronic equipment requiring semiconductor protection in industrial environments. It fits fuse holders and switchgear designed for size 31 fuses with bolted mounting and supports systems operating up to 700 V AC under IEC and UL standards.
Applications
- Protection of power semiconductors in inverters and converters.
- Industrial motor drives and variable frequency drives.
- Renewable energy systems such as solar inverters and wind turbines.
- Power supply units and uninterruptible power supplies (UPS).
- High-power electrical installations requiring fast-acting circuit protection.
Technical Specifications
- Item number: R300050
- Catalogue No: A070UD31KI350
- Description: Square Body High-Speed Fuse Protistor® Size 31 aR 690VAC IEC 700VAC UL 350A With Striker Slotted Blades short
- EAN/UPC Code: 3605340322743
- 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 Copper
- Connection/Terminal Type: Slotted Blades
- Product Width: 51 mm
- Product Length: 129 mm
- Product Height: 56.5 mm
- Sell Pack Quantity: 3 EA
- Sell Pack Weight: 1.203 kg
- Sell Pack Width: 157 mm
- Sell Pack Length: 166 mm
- Sell Pack Height: 62 mm
- Product group: Semiconductor Protection Fuses
- Body/Insulating Material: Ceramic
- Product Weight: 0.401 kg
- Power Dissipation at Rated Current Value: 67 W
Frequently Asked Questions
What does the 'aR' speed characteristic mean?
The 'aR' characteristic indicates a high-speed fuse designed specifically for semiconductor protection, capable of interrupting fault currents rapidly to prevent damage to sensitive components.
Is this fuse suitable for DC applications?
No, this particular fuse is rated for AC applications only, as specified in the technical specifications.
How does the striker indication system work?
The striker indication system provides a mechanical signal when the fuse has blown, enabling remote or local monitoring of fuse status to facilitate maintenance and reduce downtime.
What mounting type is required for this fuse?
This fuse requires bolted mounting, ensuring a secure and stable connection within the fuse holder or switchgear.
Common Search Terms
high-speed fuse, semiconductor protection fuse, size 31 fuse, aR fuse, 350A fuse, 690VAC fuse, UL 700VAC fuse, striker fuse, slotted blade fuse, bolted mounting fuse, ceramic body fuse, power electronic protection
| Manufacturer Part Number | R300050 |
|---|---|
| Packed Quantity | 3 |
| Barcode | 3605340322743 |
| Height | 129mm |
| Width | 51mm |
| Depth | 56.5mm |
| HS Code | 85361090 |
| Country of Manufacture | France |
| Manufacturer | Mersen |
| Alternative Product SKU | A070UD31KI350 |
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