63A 690V BUSSMANN FUSE
63A 690V BUSSMANN FUSE – Industrial 63A 690VAC 22 x 58 mm Class gG Cylindrical Fuse
The 63A 690V BUSSMANN FUSE (Model C22G63) is an industrial-grade, general-purpose cylindrical power fuse manufactured by Eaton’s Bussmann series. Engineered specifically to provide full-range overcurrent and short-circuit protection for electrical distribution networks, industrial machinery, power cables, and motor circuits, this 63-amp, 690 VAC (IEC) fuse delivers exceptional breaking capacity in a compact form factor.
Featuring a Class gG general-purpose operating utilization category, the 63A 690V BUSSMANN FUSE protects electrical installations against both low-level thermal overloads and extreme short-circuit fault currents. It boasts a high breaking capacity rated at 80 kA at 690 VAC and 120 kA at 500 VAC. Built in a standardized 22 x 58 mm cylindrical ferrule body format, this fuse isolates electrical faults quickly and safely to minimize thermal stress on upstream conductors, switchgear, and downstream equipment.
As shown in the image, the fuse features a high-grade ceramic tube casing clearly labeled “EATON BUSSMANN SERIES 63 A gG 690V~ 80 kA 500V~ 120 kA MADE IN SPAIN”, fitted on both ends with solid silver-plated conductive ferrule contact caps.
Key Features of the 63A 690V BUSSMANN FUSE
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Full-Range Class gG Protection: Provides complete protection against both minor continuous overloads and severe short-circuit conditions across general AC power circuits.
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Dual High-Interrupting Ratings: Delivers a high breaking capacity of 80 kA RMS Symmetrical at 690 VAC and 120 kA RMS Symmetrical at 500 VAC.
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Standardized 22 x 58 mm Industrial Size: Industry-standard 22 x 58 mm ferrule dimensions ensure straightforward snap-in installation into DIN-rail fuse disconnector switches and modular blocks.
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Low Power Loss & Thermal Efficiency: Designed with low electrical resistance to optimize power dissipation and reduce internal thermal buildup inside electrical enclosures.
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High-Strength Ceramic Casing: Constructed with a durable ceramic body filled with arc-quenching silica sand to ensure safe pressure containment during maximum fault interruption.
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Silver-Plated Contact Terminals: Equipped with silver-plated copper end caps to deliver maximum electrical conductivity and long-term corrosion resistance.
Common Applications and Practical Usage
The reliable full-range breaking capability and 690 V voltage handling of the 63A 690V BUSSMANN FUSE make it a essential component across industrial power systems:
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Industrial Distribution Panels: Protects main feeder circuits, branch power lines, and busbar systems in commercial and manufacturing facilities.
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Motor & Starter Circuit Backup Protection: Acts as reliable backup short-circuit protection when paired with thermal overload relays and contactors for AC motor circuits.
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Power Cable Protection: Safeguards low-voltage overhead lines and underground distribution cables against thermal degradation caused by prolonged overloads.
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Control Equipment & Switchgear: Protects industrial switchboards, control panel feeders, and power distribution units (PDUs) operating up to 690 V.
Technical Specifications
The core electrical, physical, and compliance parameters for the 63A 690V BUSSMANN FUSE are detailed below:
| Parameter Specification | Technical Details & Operational Values |
| Component Classification | Industrial Cylindrical Ferrule Power Fuse |
| Primary Target Keyword | 63A 690V BUSSMANN FUSE |
| Brand / Series | Eaton Bussmann Series / C22G Cylindrical |
| Catalog Model / Part No. | C22G63 / C22G63I |
| Amperage Rating | 63 Amps (63A) |
| Voltage Rating | 690 VAC / 500 VAC |
| Interrupt Rating (IR) | 80 kA at 690 VAC / 120 kA at 500 VAC |
| Utilization Category | Class gG (Full-Range General Purpose) |
| Form Factor & Dimensions | Cylindrical Ferrule (22 x 58 mm) |
| Terminal Connection Type | Silver-Plated Ferrule End Caps |
| Body Material | Ceramic Tube with Silica Sand Arc-Quenching Medium |
| Agency Certifications | IEC 60269-1, IEC 60269-2, CE, RoHS Compliant |
Operating Guidelines and Usage Tips
SAFETY NOTICE: Always isolate main power supplies and verify circuits are fully de-energized using a calibrated voltage tester prior to inspecting or replacing industrial fuses.
Holder Compatibility: Install in dedicated 22 x 58 mm modular fuse disconnector switches (such as Bussmann CH22 series holders) designed for 690V industrial applications.
Current Rating Selection: Ensure the 63A rating matches the continuous current requirements of the load while considering ambient derating factors inside closed panel enclosures.
To review official low-voltage industrial fuse standards and circuit protection guidelines, consult the National Electrical Manufacturers Association (NEMA) Directory.
To check regional warehouse inventory availability or request commercial quotes for volume electrical fuses, visit the Control Qatar Contact Page.
