A4BQ Series / Class L / Time Delay
The A4BQ Series / Class L / Time Delay is part of the Mersen (formerly Ferraz Shawmut) general purpose fuses line, distributed by Gross Automation.
Put the highest current-limitation at your service - Amp-trap® 2000 A4BQ fuses are 20% more current limiting than any other Class L fuse on the market. When correctly coordinated, they bring a superior level of protection to service entrance equipment. Downstream circuit components have maximum protection against short circuit let-thru current. A4BQ's built-in, 4-second time delay characteristic (at 500% of rated current) accommodates harmless inrush currents with no nuisance opening.
Specifications
| Specification | Value |
|---|---|
| Ratings | AC: 600VAC, 200kA I.R. (100-600A ratings are non-listed); AC: 500VDC, 100kA I.R. (601 to 3000A); UL Listed to Standard 248-10; DC Listed to UL Standard 198L; CSA Certified to Standard C22.2 No.248.10; IEC 269-2-1; Some Ratings RoHS Compliant; Mains, Feeders; Large Motors; Lighting, Heating & General Loads; Circuit Breaker Back-up; DC Rated: UPS DC Links, Battery Disconnects, Other DC Applications |
| Features | Time delay for high inrush loads such as motors and transformers, without nuisance opening; 300kA interrupting rating - self-certified, UL witnessed tests; Most current limiting for lowest peak let-thru current; even at fault currents up to 300kA; Pure silver links ensure lowest let-thru current and longer fuse life; Easy 2-to-1 selectivity for prevention of nuisance shutdowns and "blackouts"; Rejection-style design prevents replacement errors; High-visibility orange label gives instant recognition; Reduced inventory because A4BQ can replace all older types of Class L fuses now in service; 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 |
Features
- Time delay for high inrush loads such as motors and transformers, without nuisance opening
- 300kA interrupting rating - self-certified, UL witnessed tests
- Most current limiting for lowest peak let-thru current; even at fault currents up to 300kA
- Pure silver links ensure lowest let-thru current and longer fuse life
- Easy 2-to-1 selectivity for prevention of nuisance shutdowns and "blackouts"
- Rejection-style design prevents replacement errors
- High-visibility orange label gives instant recognition
- Reduced inventory because A4BQ can replace all older types of Class L fuses now in service
- 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
Ratings
- AC: 600VAC, 200kA I.R. (100-600A ratings are non-listed)
- AC: 500VDC, 100kA I.R. (601 to 3000A)
- UL Listed to Standard 248-10
- DC Listed to UL Standard 198L
- CSA Certified to Standard C22.2 No.248.10
- IEC 269-2-1
- Some Ratings RoHS Compliant
- Mains, Feeders
- Large Motors
- Lighting, Heating & General Loads
- Circuit Breaker Back-up
- DC Rated: UPS DC Links, Battery Disconnects, Other DC Applications
Catalog Numbers
| Catalog Number | Column 2 | Column 3 | Column 4 | Column 5 | Column 6 | Column 7 | Column 8 |
|---|---|---|---|---|---|---|---|
| 100 | A4BQ100 | 500 | A4BQ500 | 1000 | A4BQ1000 | 2000 | A4BQ2000 |
| 150 | A4BQ150 | 600 | A4BQ600 | 1200 | A4BQ1200 | 2500 | A4BQ2500 |
| 200 | A4BQ200 | 601 | A4BQ601 | 1350 | A4BQ1350 | 2501 | A4BQ2501 |
| 250 | A4BQ250 | 650 | A4BQ650 | 1400 | A4BQ1400 | 3000 | A4BQ3000 |
| 300 | A4BQ300 | 700 | A4BQ700 | 1500 | A4BQ1500 | 3500 | A4BQ3500 |
| 350 | A4BQ350 | 750 | A4BQ750 | 1600 | A4BQ1600 | 3800 | A4BQ3800 |
| 400 | A4BQ400 | 800 | A4BQ800 | 1800 | A4BQ1800 | 4000 | A4BQ4000 |
| 450 | A4BQ450 | 900 | A4BQ900 | 1900 | A4BQ1900 | 5000 | A4BQ5000 |