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MERSEN FUSE CC 7,5 GRC 121 EF 0250 D121GC75V250EF
MPN: M085203
Alt. SKU: D121GC75V250EF
Why Choose the Square Body High-Speed Fuse Protistor® Size 121 gR 750VDC IEC 250A With Striker Open Slot Blades?
Engineered for critical DC circuit protection, this Protistor® high-speed fuse offers rapid interruption of fault currents up to 750VDC at 250A, ensuring equipment safety and longevity in demanding industrial applications.
Featuring striker functionality and open slot blade terminals, this Size 121 fuse enables reliable remote status indication and straightforward integration within IEC-compliant systems, making it ideal for advanced power electronics and renewable energy installations.
Product Code: M085203
Key Benefits
- High-speed interruption for enhanced protection of sensitive semiconductor devices.
- Striker indication system allows for remote and clear fuse status monitoring.
- Robust ceramic body ensures durability and reliable performance under harsh conditions.
- Open slot blade terminals facilitate easy installation and secure connections.
- Compliant with IEC standards for global compatibility and safety assurance.
- High breaking capacity of 100 kA DC provides superior fault current handling.
Compatibility
This fuse is compatible with IEC standard fuse holders and bolted mounting systems designed for Size 121 fuses. It is suitable for integration in DC power circuits requiring gR characteristic fuses, including power electronics, photovoltaic systems, and industrial DC drives.
Applications
- Protection of semiconductor devices in industrial power supplies.
- Renewable energy systems such as solar photovoltaic installations.
- DC motor drives and variable speed controllers.
- Battery energy storage systems.
- Power electronics and inverter circuits requiring high-speed protection.
Technical Specifications
- Item number: M085203
- Catalogue No: D121GC75V250EF
- Description: Square Body High-Speed Fuse Protistor® Size 121 gR 750VDC IEC 250A With Striker Open Slot Blades
- EAN/UPC Code: 3605340067538
- Rated voltage DC IEC: 750 V
- Ampere Rating: 250 A
- RoHS Compliant: Yes
- AC or DC: DC
- Speed/Characteristic: gR
- Fuse Size: 121
- Mounting: Bolted
- Melting I2t: 18.05 kA²s
- Max. Rated Breaking Capacity DC: 100 kA
- Design Details: gRC
- 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: 191 mm
- Product Height: 55 mm
- Sell Pack Quantity: 1 EA
- Sell Pack Weight: 1.023 kg
- Sell Pack Width: 115 mm
- Sell Pack Length: 265 mm
- Sell Pack Height: 70 mm
- Product group: Semiconductor Protection Fuses
- Body/Insulating Material: Ceramic
- Product Weight: 1.023 kg
- Power Dissipation at Rated Current Value: 46.7 W
Frequently Asked Questions
What does the 'gR' characteristic mean for this fuse?
The 'gR' characteristic indicates that this fuse is a full-range semiconductor fuse designed to protect power semiconductors by interrupting both overload and short-circuit currents with high speed.
Can this fuse be used in AC circuits?
No, this particular fuse is rated for DC applications up to 750 VDC and is not suitable for AC circuits.
What is the purpose of the striker indication system?
The striker indication system provides a mechanical signal when the fuse has blown, enabling remote or visual confirmation of fuse status for maintenance and safety.
Is this fuse RoHS compliant?
Yes, the fuse is RoHS compliant, ensuring it meets environmental and safety standards for hazardous substances.
Common Search Terms
high-speed DC fuse, semiconductor protection fuse, Size 121 fuse, 750VDC fuse, 250A fuse, Protistor fuse, gR characteristic fuse, striker indication fuse, open slot blade fuse, IEC fuse, ceramic body fuse
| Manufacturer Part Number | M085203 |
|---|---|
| Packed Quantity | 1 |
| Barcode | 3605340067538 |
| Height | 191mm |
| Width | 51mm |
| Depth | 55mm |
| HS Code | 85361090 |
| Country of Manufacture | France |
| Manufacturer | Mersen |
| Alternative Product SKU | D121GC75V250EF |
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