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MERSEN FUSE 6,9 URD 31 EF 0550 6,9URD31EF0550
MPN: J300043
Alt. SKU: PC31UD69V550EF
Special Price
£105.07
£87.56
Regular Price
£191.04
MERSEN FUSE 6,9 URD 31 EF 0550 6,9URD31EF0550 is available to buy in increments of 3
Why Choose the Square Body High-Speed Fuse Protistor® Size 31 aR 690VAC IEC 700VAC UL 550A With Striker Open Slot Blades PC31UD69V550EF?
Engineered for demanding industrial applications, this high-speed fuse delivers reliable circuit protection for semiconductor devices and critical power equipment, rated at 550A and up to 690VAC (IEC) and 700VAC (UL) standards. The robust square body design ensures enhanced thermal dissipation and mechanical strength.
Featuring a striker for remote indication and open slot blades for secure, efficient mounting, this fuse provides rapid fault interruption to minimise downtime and protect valuable assets, meeting both IEC and UL safety compliance requirements.
Technical Specifications
- Item number: J300043
- Catalogue No: PC31UD69V550EF
- Description: Square Body High-Speed Fuse Protistor® Size 31 aR 690VAC IEC 700VAC UL 550A With Striker Open Slot Blades
- EAN/UPC Code: 3605340322675
- 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: Open Slot Blades
- Product Width: 51 mm
- Product Length: 109.4 mm
- Product Height: 56.5 mm
- Sell Pack Quantity: 3 EA
- Sell Pack Weight: 1.2129 kg
- Sell Pack Width: 143 mm
- Sell Pack Length: 175 mm
- Sell Pack Height: 73 mm
- Product group: Semiconductor Protection Fuses
- Body/Insulating Material: Ceramic
- Product Weight: 0.4043 kg
- Power Dissipation at Rated Current Value: 75 W
Product Code: J300043
Key Benefits
- High-speed protection for sensitive semiconductor devices
- Robust ceramic square body for enhanced durability and thermal management
- Striker indication system allows for remote fault detection
- Open slot blades ensure secure and efficient bolted mounting
- Compliance with IEC and UL standards for safety and performance
- High breaking capacity of 200 kA minimises risk of damage during faults
Compatibility
This fuse is compatible with Size 31 fuse holders and switchgear designed for semiconductor protection fuses, supporting applications requiring AC voltages up to 700V UL and 690V IEC. Its bolted mounting and open slot blades fit standard industrial fuse bases.
Applications
- Protection of power semiconductor devices such as thyristors and diodes
- Industrial motor drives and variable frequency drives (VFDs)
- Power supply units and inverters
- Renewable energy systems including solar and wind power converters
- Critical industrial equipment requiring fast and reliable fault interruption
Frequently Asked Questions
What does the 'aR' speed characteristic mean?
The 'aR' rating indicates a high-speed fuse designed specifically for semiconductor protection, capable of interrupting short-circuit currents rapidly to protect sensitive components.
Is this fuse suitable for DC applications?
No, this fuse is designed for AC applications only, as specified in the technical specifications.
How does the striker indication system work?
The striker mechanism activates upon fuse operation, providing a mechanical indication that can be detected remotely, allowing quick identification of blown fuses without direct inspection.
Can this fuse be used in environments requiring RoHS compliance?
Yes, this fuse is RoHS compliant, ensuring it meets environmental and safety regulations regarding hazardous substances.
Common Search Terms
high-speed fuse, semiconductor protection fuse, Size 31 fuse, 550A fuse, 690VAC fuse, 700VAC fuse, aR fuse, striker fuse, bolted fuse, open slot blade fuse, ceramic body fuse, industrial fuse, power electronics protection
| Manufacturer Part Number | J300043 |
|---|---|
| Packed Quantity | 3 |
| Barcode | 3605340322675 |
| Height | 109.4mm |
| Width | 51mm |
| Depth | 56.5mm |
| HS Code | 85361090 |
| Country of Manufacture | France |
| Manufacturer | Mersen |
| Alternative Product SKU | PC31UD69V550EF |
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