الوصف
The A070GRB08T13 fuse is an 8A, 700VAC semiconductor protection fuse originally supplied under the Ferraz Shawmut brand and currently associated with Mersen. It is an extremely fast-acting, current-limiting fuse developed to protect sensitive power semiconductor components used in SCR generator panels, industrial rectifiers, inverters, uninterruptible power supply systems and motor drives.
This fuse has a compact 10×38 mm cylindrical body with ferrule-style terminals. Its internationally recognized dimensions allow it to be installed in compatible industrial fuse holders while occupying minimal space inside generator panels, electrical cabinets and power-conversion equipment.
A070GRB08T13 Fuse for 600V SCR Generator Panels
The A070GRB08T13 fuse is suitable for compatible 600V SCR generator panel applications requiring an 8A semiconductor protection fuse. The operating voltage of the specified panel is 600V, while the rated voltage of the fuse itself is 700VAC. This distinction should be maintained in the product information to ensure accurate technical representation.
Because the fuse is rated for 700VAC, it may be used in suitable electrical equipment operating at 700VAC or below, provided that its current rating, operating characteristics, interrupting capacity, fuse-holder dimensions and semiconductor coordination match the original equipment requirements.
SCRs, thyristors, power diodes and rectifier components can be damaged very quickly when exposed to excessive current. A conventional general-purpose fuse may not interrupt the circuit rapidly enough to protect these sensitive components. The extremely fast operating characteristic of this fuse helps limit the amount of electrical and thermal energy transferred to the semiconductor during a fault.
Extremely Fast Semiconductor Protection
The A070GRB08T13 fuse belongs to the A070gRB series of full-range semiconductor protection fuses. This series is designed for applications where rapid fault interruption, current limitation and low energy let-through are essential.
Its gR classification indicates that the fuse is intended to provide full-range protection for semiconductor circuits when correctly selected and coordinated. The fuse can respond to both overcurrent and short-circuit conditions, helping protect sensitive electronic devices throughout the specified operating range.
During an electrical fault, the fuse element melts and interrupts the current before excessive fault energy reaches the protected SCR, thyristor or power diode. The low I²t performance helps reduce stress on semiconductor junctions and other components connected within the power-conversion circuit.
Key Features of the A070GRB08T13 Fuse
- 8A rated current
- 700VAC rated voltage
- 550VDC series voltage rating
- Suitable for compatible 600V SCR generator panel applications
- Extremely fast-acting operating characteristic
- gR full-range semiconductor fuse class
- Current-limiting performance
- Low I²t energy let-through
- High AC interrupting capacity
- Compact 10×38 mm cylindrical body
- Ferrule-style mounting
- Excellent cycling capability
- Designed for SCRs, thyristors and power diodes
- Suitable for power-conversion and industrial control systems
Typical Industrial Applications
The A070GRB08T13 fuse may be used in industrial electrical systems requiring fast protection of semiconductor components. Typical applications include:
- 600V SCR generator panels
- Generator control and power panels
- SCR and thyristor circuits
- Industrial rectifier systems
- Power semiconductor circuits
- Industrial inverters
- Uninterruptible power supply systems
- Variable-frequency drives
- AC and DC motor drives
- Power-conversion equipment
- Diode protection circuits
- Industrial automation panels
- Electrical control cabinets
Technical Specifications
- Brand: Ferraz Shawmut
- Current Manufacturer: Mersen
- Series: A070gRB
- Model Number: A070GRB08T13
- Manufacturer Reference: F330009
- Product Type: Semiconductor Protection Fuse
- Fuse Class: gR
- Operating Characteristic: Extremely Fast Acting
- Rated Current: 8A
- Rated AC Voltage: 700VAC
- Rated DC Voltage: 550VDC
- Panel Application Voltage: 600V
- AC Interrupting Capacity: 160kA
- DC Interrupting Capacity: 10kA
- DC Time Constant: L/R 10ms
- Melting I²t: 3.3 A²s
- Clearing I²t at Rated Voltage: 36.3 A²s
- Power Loss at 80% Rated Current: 1.35W
- Power Loss at 100% Rated Current: 2.4W
- Body Size: 10×38 mm
- Connection Type: Cylindrical Ferrule
- Primary Function: SCR and Semiconductor Circuit Protection
Why Use a gR Semiconductor Fuse?
Power semiconductor components have a lower tolerance to fault energy than many conventional electrical devices. A sudden overcurrent can generate enough heat to damage an SCR, thyristor or power diode within a fraction of a second. For this reason, semiconductor circuits require fuses with a faster response and lower energy let-through than ordinary general-purpose fuses.
The A070GRB08T13 fuse is designed to interrupt fault current rapidly and limit the peak current passing through the protected circuit. Its gR characteristic makes it suitable for full-range semiconductor protection when the fuse is correctly coordinated with the electrical equipment.
Correct fuse selection can help maintain the original protection arrangement of the SCR generator panel and reduce the possibility of additional damage to rectifiers, control boards, semiconductor modules and associated electrical components.
Replacement and Compatibility Information
Replacement fuses should be selected by confirming the complete catalog number and technical specifications. A fuse with the same 8A current rating or similar physical dimensions may not provide equivalent protection if its voltage rating, speed, interrupting capacity or I²t values are different.
Before ordering the A070GRB08T13 fuse, verify the following information:
- Original fuse manufacturer and complete model number
- Manufacturer reference number F330009
- Required 8A current rating
- Panel operating voltage
- Fuse rated voltage
- Available short-circuit current
- Fuse-holder dimensions and compatibility
- Required semiconductor protection coordination
- Panel temperature and operating conditions
The fuse holder must be suitable for the 10×38 mm cylindrical body and the required voltage and current ratings. Installation, testing and replacement should be performed by qualified electrical personnel in accordance with the equipment manufacturer’s instructions and applicable electrical safety procedures.
Ordering the A070GRB08T13 Fuse
For quotation and product verification, provide the complete model number A070GRB08T13, manufacturer reference F330009, required quantity and information about the SCR generator panel or protected equipment.
A clear photograph of the existing fuse label and fuse holder can help confirm the required model. Product availability and compatibility should be verified before final order placement.
View the Ferraz Shawmut A070gRB semiconductor fuse catalogue for the technical specifications of the A070GRB08T13 fuse, including its 8A current rating, 700VAC voltage rating and F330009 reference number.
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