MERSEN FUSE A 070 URD 31 LI 0550 A070URD31LI0550

Why Choose the Square Body High-Speed Fuse Protistor® Size 31 aR 690VAC IEC 700VAC UL 550A With Striker Slotted Blades long A070UD31LI550?

The Square Body High-Speed Fuse Protistor® Size 31 delivers reliable circuit protection for critical industrial applications, with a high interrupting capacity rated for up to 690VAC (IEC) and 700VAC (UL) at 550A. Purpose-built for safeguarding power semiconductors, it ensures rapid response to overcurrents, reducing the risk of equipment damage and downtime.

This model features robust slotted blades with an integrated striker for quick and safe mechanical or electrical indication. Its compact square body design allows easy integration into modern panel assemblies, making it an ideal choice for engineers seeking precise, high-performance circuit protection.

Technical Specifications

• Item number: C300704
• Catalogue No: A070UD31LI550
• Description: Square Body High-Speed Fuse Protistor® Size 31 aR 690VAC IEC 700VAC UL 550A With Striker Slotted Blades long
• EAN/UPC Code: 3605340332469
• Rated voltage AC UL: 700 V
• Rated voltage AC IEC: 690 V
• Ampere Rating: 550 A
• RoHS Compliant: Yes
• AC or DC: AC
• Speed/Characteristic: aR
• Fuse Size: 31
• Mounting: Bolted
• Clearing I2t At Rated Voltage: 310000 A²s
• Melting I2t: 52000 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: 148.6 mm
• Product Height: 56.5 mm
• Sell Pack Quantity: 3 EA
• Sell Pack Weight: 1.2519 kg
• Sell Pack Width: 155 mm
• Sell Pack Length: 165 mm
• Sell Pack Height: 60 mm
• Product group: Semiconductor Protection Fuses
• Body/Insulating Material: Ceramic
• Product Weight: 0.4173 kg
• Power Dissipation at Rated Current Value: 75 W

Product Code: C300704

Key Benefits

• High interrupting capacity up to 700VAC ensuring robust protection.
• Rapid response to overcurrents minimising equipment damage.
• Integrated striker indication for quick and safe fuse status monitoring.
• Compact square body design for easy panel integration.
• Silver-plated copper slotted blades for reliable electrical connection.
• Ceramic insulating body for enhanced durability and thermal stability.

Compatibility

This fuse is compatible with industrial power semiconductor devices requiring aR characteristic protection, suitable for bolted mounting in panel assemblies designed for Size 31 fuses. It meets IEC and UL standards for AC voltages up to 700V, making it suitable for use in a wide range of industrial electrical systems.

Applications

• Protection of power semiconductors such as thyristors and diodes.
• Industrial motor drives and power converters.
• High-speed circuit protection in manufacturing plants.
• Renewable energy systems including solar inverters.
• Electrical distribution panels requiring high breaking capacity fuses.

Common Search Terms

High-speed fuse, semiconductor protection fuse, Size 31 fuse, 550A fuse, 690VAC fuse, 700VAC fuse, aR characteristic fuse, striker fuse, bolted mounting fuse, ceramic body fuse, industrial fuse, power semiconductor fuse.