Mersen Protistor 36x127 gR High-Speed Semiconductor Fuse Series, 25–100 A, 1000 VDC
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Mersen Protistor® size 36x127 gR (GRB/C) is a 1000 VDC high-speed cylindrical semiconductor fuse family for DC protection. The verified range covers seven trip-indicator variants from 25 A through 100 A, all using the gR characteristic and 36x127 size. The series has a maximum interrupting rating of 100 kA at rated voltage with L/R = 20 ms. Mersen identifies these fuses as extremely fast acting and current limiting, with very low I²t. This page consolidates the manufacturer-documented range so procurement and maintenance teams can compare exact catalog numbers, Item numbers, current ratings, and watt loss before RFQ or replacement review.
Protistor 36x127 gR (GRB/C) Series Overview
The Protistor 36x127 gR range is designed for semiconductor protection in DC circuits. Mersen states that these fuses provide lower I²t to help minimize damage to protected components during short circuits, along with lower watt loss and tested cycling capability. All models covered here are rated 1000 VDC and use the same 36x127 cylindrical format with trip-indicator. Rated current and associated watt loss are the principal documented differences between the seven catalog-number variants.
Technical Specifications
| Specification | Series Data |
|---|---|
| Product type | IEC high-speed cylindrical fuse-links for DC semiconductor protection |
| Rated voltage DC | 1000 VDC |
| Rated current range | 25-100 A |
| Speed / characteristic | gR |
| Product size | 36x127 |
| Maximum interrupting rating IR | 100 kA at rated voltage, L/R = 20 ms |
| Configuration | With trip-indicator |
Technical data reference: Mersen Protistor® size 36x127 gR (GRB/C) 1000VDC, document DS-PROTISTOR-36x127-gR-1000-01-0726-EN.
Protistor 36x127 gR (GRB/C) Model Selection
The verified range provides seven rated-current options: 25 A, 32 A, 40 A, 50 A, 63 A, 80 A, and 100 A. Select the model according to the required current rating and compare the documented watt loss at 0.8 In and In for the intended circuit. All listed models share the 1000 VDC rating, gR characteristic, 36x127 size, and trip-indicator configuration. Confirm the complete catalog number, Item number, electrical requirements, and mechanical fit before ordering or evaluating a replacement.
| Catalog Number / MPN | Rated Current | Item Number | Watt Loss @ 0.8 In | Watt Loss @ In |
|---|---|---|---|---|
| FD36GB100V25T | 25 A | H083980 | 5.3 W | 9.4 W |
| FD36GB100V32T | 32 A | R086495 | 6.4 W | 11.5 W |
| FD36GB100V40T | 40 A | G089499 | 6.5 W | 11.6 W |
| FD36GB100V50T | 50 A | H089500 | 7.8 W | 15.4 W |
| FD36GC100V63T | 63 A | J089501 | 10.5 W | 18.8 W |
| FD36GC100V80T | 80 A | A083651 | 11.9 W | 21.5 W |
| FD36GC100V100T | 100 A | Z083650 | 13.2 W | 24.1 W |
Verified Applications
Mersen lists rectifiers, inverters, traction auxiliary circuits, UPS systems, and reduced-voltage motor starters as applications for this fuse range. Final fuse selection should be based on the electrical and operating requirements of the protected equipment.
B2B Sourcing and Replacement Support
Apexon Supply provides independent B2B sourcing support for the Mersen Protistor 36x127 gR (GRB/C) series, including exact-MPN review and replacement-sourcing alignment for maintenance and procurement requirements. Confirm voltage, rated current, gR characteristic, physical size, trip-indicator configuration, and equipment requirements before replacement. Submit the complete MPN, Item number when available, selected current rating, quantity, and application requirements for RFQ review. Most qualified RFQs receive a response or quote within 12 hours.
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