AJT Series / Class J / Time Delay
The AJT Series / Class J / Time Delay is part of the Mersen (formerly Ferraz Shawmut) general purpose fuses line, distributed by Gross Automation.
Maximum Circuit Protection, Minimal Size - Amp-trap 2000® SmartSpot® AJT fuses now provide a visual open fuse indicator. With advanced material technology added to the existing product line the AJT fuse provides IEC Type "2" (No Damage) protection to main, feeder, and branch circuits, for all types of loads - yet, they require only half the mounting space needed for 600VAC Class RK fuses. AJT's time delay characteristics for handling harmless in-rush currents, its current limiting ability (the most current limiting UL fuse class!), and wide range of ratings (from 1 to 600 Amperes) - give excellent protection for all your applications. A mechanical Indicator/Microswitch Mount (EI) is available on blade-type (70 to 600A) fuses for visual or remote indication of open fuse condition.
Specifications
| Specification | Value |
|---|---|
| Ratings | AC: 600VAC, 200kA I.R.; AC: 500VDC, 100kA I.R.; UL Listed to Standard 248-8; DC Listed to UL Standard 198L; CSA Certified to Standard C22.2 No. 248.8; IEC 269-2-1; RoHS Compliant; Motor Circuits; Mains; Feeders; Branch Circuits; Lighting, Heating & General Loads; Transformers; Control Panels; Circuit Breaker Back-up; Bus Duct; Load Centers |
| Features | Solid State SmartSpot Indicator; Time delay for motor starting and transformer inrush; 300kA interrupting rating - self-certified, UL witnessed tests; Extremely current limiting for low peak let-thru current; Most current limiting UL class fuse; Small footprint requires less mounting space and allows smaller, more economical fuse blocks; Easy 2-to-1 selectivity for prevention of nuisance shutdowns; Unique Class J dimensions prevent replacement errors; High-visibility orange label gives instant recognition; Metal embossed date and catalog number for traceability and lasting identification; Fiberglass body provides dimensional stability in harsh industrial settings; High grade silica filler ensures fast arc quenching; Optional EI Indicator/Switch mount available |
Features
- Solid State SmartSpot Indicator
- Time delay for motor starting and transformer inrush
- 300kA interrupting rating - self-certified, UL witnessed tests
- Extremely current limiting for low peak let-thru current
- Most current limiting UL class fuse
- Small footprint requires less mounting space and allows smaller, more economical fuse blocks
- Easy 2-to-1 selectivity for prevention of nuisance shutdowns
- Unique Class J dimensions prevent replacement errors
- High-visibility orange label gives instant recognition
- Metal embossed date and catalog number for traceability and lasting identification
- Fiberglass body provides dimensional stability in harsh industrial settings
- High grade silica filler ensures fast arc quenching
- Optional EI Indicator/Switch mount available
Ratings
- AC: 600VAC, 200kA I.R.
- AC: 500VDC, 100kA I.R.
- UL Listed to Standard 248-8
- DC Listed to UL Standard 198L
- CSA Certified to Standard C22.2 No. 248.8
- IEC 269-2-1
- RoHS Compliant
- Motor Circuits
- Mains
- Feeders
- Branch Circuits
- Lighting, Heating & General Loads
- Transformers
- Control Panels
- Circuit Breaker Back-up
- Bus Duct
- Load Centers
Catalog Numbers
| Catalog Number | Column 2 | Column 3 | Column 4 | Column 5 | Column 6 | Column 7 | Column 8 |
|---|---|---|---|---|---|---|---|
| 1 | AJT1 | 4-1/2 | AJT4-1/2 | 25 | AJT25 | 125 | AJT125 |
| 1-1/4 | AJT1-1/4 | 5 | AJT5 | 30 | AJT30 | 150 | AJT150 |
| 1-1/2 | AJT1-1/2 | 5-6/10 | AJT5-6/10 | 35 | AJT35 | 175 | AJT175 |
| 1-6/10 | AJT1-6/10 | 6 | AJT6 | 40 | AJT40 | 200 | AJT200 |
| 1-8/10 | AJT1-8/10 | 6-1/4 | AJT6-1/4 | 45 | AJT45 | 225 | AJT225 |
| 2 | AJT2 | 7 | AJT7 | 50 | AJT50 | 250 | AJT250 |
| 2-1/4 | AJT2-1/4 | 8 | AJT8 | 60 | AJT60 | 300 | AJT300 |
| 2-1/2 | AJT2-1/2 | 9 | AJT9 | 70 | AJT70 | 350 | AJT350 |
| 2-8/10 | AJT2-8/10 | 10 | AJT10 | 80 | AJT80 | 400 | AJT400 |
| 3 | AJT3 | 12 | AJT12 | 90 | AJT90 | 450 | AJT450 |
| 3-2/10 | AJT3-2/10 | 15 | AJT15 | 100 | AJT100 | 500 | AJT500 |
| 3-1/2 | AJT3-1/2 | 17-1/2 | AJT17-1/2 | 110 | AJT110 | 600 | AJT600 |
| 4 | AJT4 | 20 | AJT20 |