2.4kV Ferrule / Medium Voltage Fuses
The 2.4kV Ferrule / Medium Voltage Fuses is part of the Mersen (formerly Ferraz Shawmut) medium voltage fuses line, distributed by Gross Automation.
R-rated Motor Starter Fuses - Amp-trap R-rated fuses are current-limiting, high interrupting rating fuses intended for the short-circuit protection of medium voltage motors and motor controllers. R-rated fuses are back up fuses that have a minimum interrupting rating, and must be coordinated with overload relays in combination motor starters. The motor starter manufacturer generally specifies the R-rated fuse size. Amp-trap R-rated fuses are rated 2R to 36R.
Specifications
| Specification | Value |
|---|---|
| Ratings | AC: 2R to 36R - 2750V, 45kA I.R. Sym.; Ferraz Shawmut Certified A240R @ 2750V, 45kA, Sym.; Short circuit protection of medium voltage motors and motor controllers |
| Features | Ferrule mounting for standard clips and interchangeability with other brands of fuses |
Features
- Ferrule mounting for standard clips and interchangeability with other brands of fuses
Ratings
- AC: 2R to 36R - 2750V, 45kA I.R. Sym.
- Ferraz Shawmut Certified A240R @ 2750V, 45kA, Sym.
- Short circuit protection of medium voltage motors and motor controllers
Catalog Numbers
Catalog Numbering System, Ratings, Dimensions, 2.4kV
| Catalog Number | Size | Continuous Ampere Rating at 40°C | Dim. L | Minimum Interrupting Rating RMS Amperes | Notes |
|---|---|---|---|---|---|
| A240R1R+ | 1R | 35 | 10-7/8 (276mm) | 100 | |
| A240R2R+ | 2R | 70 | 10-7/8 (276mm) | 170 | |
| A240R3R+ | 3R | 100 | 10-7/8 (276mm) | 250 | |
| A240R4R+ | 4R | 130 | 10-7/8 (276mm) | 340 | |
| A240R5R+ | 5R | 150 | 10-7/8 (276mm) | 420 | |
| A240R6R+ | 6R | 170 | 10-7/8 (276mm) | 500 | |
| A240R9R+ | 9R | 200 | 10-7/8 (276mm) | 760 | |
| A240R24R+ | 24R | 450 | 10-7/8 (276mm) | 2000 | |
| A240R36R+ | 36R | 650 | 10-7/8 (276mm) | 2900 | Not recommended for use in fuse clips which grasp only one barrel. |