A2K & A6K Series / Class RK1 / Fast Acting
The A2K & A6K Series / Class RK1 / Fast Acting is part of the Mersen (formerly Ferraz Shawmut) general purpose fuses line, distributed by Gross Automation.

These fast-acting fuses deliver a high degree of current limitation - Current-limiting A6K fuses provide excellent protection where high available short circuit currents exist. These fast-acting fuses are particularly good for branch/feeder circuits and back-up protection.
Specifications
| Specification | Value |
|---|---|
| Ratings | AC: 600VAC, 200kA I.R.; AC: 300VDC, 20kA I.R. (Ferraz Shawmut certified); UL Listed to Standard 248-12; CSA Certified to Standard C22.2 No. 248.12; Some ratings RoHS Compliant; Loadcenters; Panelboards; Switchboards; Bus Duct; Feeder Circuits; Non-inductive Loads; Lighting Circuits |
| Features | Rejection style design prevents replacement by other fuse classes; Fiberglass body provides dimensional stability in harsh industrial environments; Easy-to read imprint label for quick recognition and replacement; High degree of current limitation for low peak let-thru current; Current-limiting; Drive protection in larger RK body sizes for older installations; Fast acting |
Features
- Rejection style design prevents replacement by other fuse classes
- Fiberglass body provides dimensional stability in harsh industrial environments
- Easy-to read imprint label for quick recognition and replacement
- High degree of current limitation for low peak let-thru current
- Current-limiting
- Drive protection in larger RK body sizes for older installations
- Fast acting
Ratings
- AC: 600VAC, 200kA I.R.
- AC: 300VDC, 20kA I.R. (Ferraz Shawmut certified)
- UL Listed to Standard 248-12
- CSA Certified to Standard C22.2 No. 248.12
- Some ratings RoHS Compliant
- Loadcenters
- Panelboards
- Switchboards
- Bus Duct
- Feeder Circuits
- Non-inductive Loads
- Lighting Circuits
Catalog Numbers
| Amps | Catalog Number 250V | Catalog Number 600V |
|---|---|---|
| 1 | A2K1R+ | A6K1R+ |
| 3 | A2K3R+ | A6K3R+ |
| 4 | - | A6K4R+ |
| 5 | A2K5R+ | A6K5R+ |
| 6 | A2K6R+ | A6K6R+ |
| 8 | - | A6K8R+ |
| 10 | A2K10R+ | A6K10R+ |
| 12 | A2K12R+ | - |
| 15 | A2K15R+ | A6K15R+ |
| 20 | A2K20R+ | A6K20R+ |
| 25 | A2K25R+ | A6K25R+ |
| 30 | A2K30R+ | A6K30R+ |
| 35 | A2K35R+ | A6K35R+ |
| 40 | A2K40R+ | A6K40R+ |
| 45 | A2K45R+ | A6K45R+ |
| 50 | A2K50R+ | A6K50R+ |
| 60 | A2K60R+ | A6K60R+ |
| 70 | A2K70R+ | A6K70R+ |
| 80 | A2K80R+ | A6K80R+ |
| 90 | A2K90R+ | A6K90R+ |
| 100 | A2K100R+ | A6K100R+ |
| 110 | A2K110R+ | A6K110R+ |
| 125 | A2K125R+ | A6K125R+ |
| 150 | A2K150R+ | A6K150R+ |
| 175 | A2K175R+ | A6K175R+ |
| 200 | A2K200R+ | A6K200R+ |
| 225 | A2K225R+ | A6K225R+ |
| 250 | A2K250R+ | A6K250R+ |
| 300 | A2K300R+ | A6K300R+ |
| 350 | A2K350R+ | A6K350R+ |
| 400 | A2K400R+ | A6K400R+ |
| 450 | A2K450R+ | A6K450R+ |
| 500 | A2K500R+ | A6K500R+ |
| 600 | A2K600R+ | A6K600R+ |