Mersen D121GC75V200TF Semiconductor Fuse, 750 VDC, 200 A
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Mersen D121GC75V200TF is a Protistor® size 121 gR semiconductor protection fuse-link for DC circuit protection. Item number N085250 identifies the 200 A version with 750 VDC IEC rating, type TTF threaded terminals, and striker configuration for industrial power and semiconductor protection applications.
| Product ID / MPN | D121GC75V200TF |
| Secondary ID | N085250 |
| Brand / Series / Category | Mersen Protistor® size 121 gR semiconductor protection fuse |
| Rated Voltage DC | 750 VDC IEC |
| Rated Current | 200 A |
| Speed / Characteristic | gR |
| Pre-arcing I²t | 11.85 kA²s |
| Rated Breaking Capacity DC | 100 kA |
| Max. I²t at 900 V, L/R=40 ms, IP=50In | 150 kA²s |
| Max. I²t at 900 V, L/R=40 ms, IP=10In | 755 kA²s |
| Power Dissipation at In | 37.5 W |
| Power Dissipation at 0.8 In | 20.5 W |
| Mounting / Terminal / Connection | Type TTF threaded terminals with striker |
| Weight | 0.88 kg |
| Standards / Certifications | IEC 60269-4 Compliance |
Typical applications include protection of inverters, motor drives, UPS systems, railway power and auxiliary circuits, and similar equipment rated at 750 VDC or less.
Apexon Supply supports B2B sourcing and replacement review for Mersen D121GC75V200TF semiconductor fuses. Buyers should verify current rating, voltage rating, breaking capacity, gR characteristic, size 121 body style, and TTF threaded terminal configuration before replacement.
Send the MPN, item number N085250, required quantity, and application requirements for RFQ support. Most qualified RFQs receive a response or quote within 12 hours.
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