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MERSEN FUSE A 065 URD 30 TTI 0630 A065UD30TTI630
Advanced high-speed fuse delivering reliable circuit protection for demanding industrial and power electronics applications, supporting operational voltages up to 600VAC (IEC) and 650VAC (UL) at 630A with a robust ceramic body and striker indication.
£101.10
Why Choose the Mersen A302703 High-Speed Semiconductor Fuse?
The Mersen A302703 is an industrial high-speed semiconductor fuse designed to provide rapid protection for sensitive power electronic components. It is intended for applications where fast short-circuit interruption is essential to reduce the risk of damage to semiconductor devices and associated electrical equipment.
Engineered for demanding power conversion and control systems, the A302703 offers current-limiting performance that helps restrict the electrical and thermal energy passing through a circuit during a fault. This rapid response can minimise secondary damage, reduce equipment downtime and help protect valuable power electronic assemblies.
The Mersen A302703 is suitable for compatible drives, rectifiers, converters, inverters and industrial power supplies. It can support the protection of components such as diodes, thyristors and insulated-gate bipolar transistors when selected and installed according to the electrical requirements of the equipment.
Key Advantages
- High-speed fuse designed for semiconductor protection.
- Rapid short-circuit interruption helps protect sensitive power electronics.
- Current-limiting performance reduces damaging let-through energy.
- Suitable for demanding industrial power conversion applications.
- Helps minimise equipment damage and unplanned production downtime.
- Manufactured by Mersen, a recognised electrical protection specialist.
Key Features
- Mersen high-speed semiconductor fuse.
- Manufacturer reference A302703.
- Designed for rapid interruption of high fault currents.
- Low let-through energy for improved component protection.
- Current-limiting operation during short-circuit conditions.
- Suitable for industrial power electronic equipment.
- Supports the protection of diodes, thyristors, rectifiers and IGBTs.
- Suitable as a replacement fuse in correctly rated installations.
Reliable Protection for Industrial Power Electronics
Power semiconductor components can be damaged within milliseconds when exposed to excessive fault current. High-speed fuses such as the Mersen A302703 are designed to interrupt dangerous currents more rapidly than standard general-purpose fuses, limiting the amount of thermal and electrical energy transferred to protected equipment.
This fast response makes the A302703 suitable for industrial applications where semiconductor reliability is critical. Selecting the correct fuse can help protect expensive power modules, improve equipment availability and reduce the extent of damage caused by electrical faults.
Typical Applications
- Variable frequency drives and industrial motor controls.
- Power converters and rectifier systems.
- Industrial inverters and power supplies.
- Uninterruptible power supply equipment.
- Renewable energy conversion systems.
- Automation, process control and power electronic equipment.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Class | aR | |
| Voltage | 600 V | |
| Item number | A302703 | |
| Catalogue No | A065UD30TTI630 | |
| Description | Square Body High-Speed Fuse Protistor® Size 30 aR 600VAC IEC 650VAC UL 630A With Striker Flush ends UNC threads | |
| EAN/UPC Code | 3605340355420 | |
| Rated voltage AC UL | 650 V | |
| Rated voltage AC IEC | 600 V | |
| Ampere Rating | 630 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 30 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 450 kA²s | |
| Melting I2t | 84 kA²s | |
| 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 | 40 mm | |
| Product Length | 50.6 mm | |
| Product Height | 48 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 0.765 kg | |
| Sell Pack Width | 80 mm | |
| Sell Pack Length | 135 mm | |
| Sell Pack Height | 55 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.255 kg | |
| Power Dissipation at Rated Current Value | 85 W | |
| HS Code | 85361090 | |
| Country of Manufacture | France |
Frequently Asked Questions
What is the Mersen A302703 used for?
The Mersen A302703 is used to provide high-speed short-circuit protection for semiconductor components and industrial power electronic equipment.
Which components can the A302703 help protect?
It can be used in correctly engineered circuits containing components such as diodes, thyristors, rectifiers and insulated-gate bipolar transistors.
Is the Mersen A302703 a general-purpose fuse?
No. It is intended for high-speed semiconductor protection applications where rapid fault interruption and low let-through energy are required.
Where is this fuse typically installed?
It is typically installed in industrial drives, converters, rectifiers, inverters, power supplies and automation equipment.
How should a replacement Mersen A302703 fuse be selected?
The replacement fuse must match the original A302703 reference and the required current, voltage, breaking capacity, operating characteristic and mounting configuration of the equipment.
Trusted Industrial Electrical Protection
Mersen semiconductor fuses are widely used by engineers, panel builders and equipment manufacturers to protect sensitive power electronics and support reliable industrial system operation.
