Mersen, formerly Ferraz Shawmut A4BQ Catalog Page
AMP-TRAP 2000
®
A4BQ TIME DELAY/CLASS L
PUT the HIGHEST CURRENT-LIMITATION...
AT YOUR service.
Amp-trap 2000® A4BQ fuses are 20% more current
HIGHLIGHTS:
Time Delay
➤
Industry’s Most
➤
Current-Limiting
Class L Fuse
Arc Flash mitigating
➤
Pure Silver Elements
➤
AC & DC Rated
➤
APPLICATIONS:
Mains, Feeders
➤
Large Motors
➤
Lighting, Heating &
➤
General Loads
Circuit Breaker Back-up
➤
DC Rated: UPS DC
➤
Links, Battery
➤
Disconnects, Other
DC Applications
*Please contact factory for special trigger actuator
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.
Features/Benefits
Fastest operation under short circuit conditions:
➤
Let-thru currents are typically 20% lower, with a
corresponding let-thru energy (clearing I2t) up to 40%
lower than the next fastest Class L fuse
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
Recommended for Arc Flash energy reduction
➤
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: 100 to 6000A
➤
600VAC, 200kA I.R.
(self certified for
600VAC, 300kA I.R.,
UL witnessed) 4-
second delay at 500%
rating
DC: 601 to 3000A
➤
500VDC, 100kA I.R.
Approvals
UL Listed to Standard
➤
248-10 (601-6000A)
File E2137
DC Listed to UL
➤
Standard 248
(601-3000A)
CSA Certified to
➤
Standard C22.2
No. 248.10
(601-6000A)
A
A 5AA 5
AMP-TRAP 2000
®
TIME DELAY/CLASS L FUSES
Standard Fuse Ampere Ratings, Catalog Numbers
AMPERE CATALOG AMPERE CATALOG AMPERE CATALOG AMPERE CATALOG
RATING NUMBER RATING NUMBER RATING NUMBER RATING NUMBER
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
6000 A4BQ6000
100-800A
Dimensions
AMPERE A B C D E
RATING In. mm In. mm In. mm In. mm In. mm
801-2000A
A4BQ
2001-3000A
3001-4000A
100-600 8-5/8 219 2 51 5/16 8 1-5/8 41 2-13/32 61
8-5/8 219 2-1/2 63 3/8 9 2 51 2-13/32 61
601-800
801-1200 10-3/4 273 2-1/2 63 3/8 9 2 51 3-15/32 88
1201-1600 10-3/4 273 3 76 7/16 11 2-3/8 60 3-15/32 88
1601-2000 10-3/4 273 3-1/2 89 1/2 12 2-3/4 70 3-15/32 88
2001-2500 10-3/4 273 4-1/2 114 3/4 19 3-1/2 89 3-15/32 88
2501-3000 10-3/4 273 5 127 3/4 19 4 102 3-15/32 88
3001-4000 10-3/4 273 5-3/4 146 3/4 19 4-3/4 121 3-15/32 88
4001-5000 10-3/4 273 6-1/4 159 1 25 5-1/4 133 3-15/32 88
5001-6000 10-3/4 273 7-1/8 181 1 25 5-3/4 146 3-15/32 88
4001-6000A
Safety Note: Class L fuses are dimensioned for
one-way interchangeability. A Class L fuse of any
lower ampere rating can be substituted for a given
Class L fuse.
A4BQ (601 to 6000) Let-Thru Current in kilo-Amperes
Available Fault 601 800 1000 1200 1600 2000 2500 3000 4000 5000 6000
RMS AMPS RMS Ip RMS Ip RMS Ip RMS Ip RMS Ip RMS Ip RMS Ip RMS Ip RMS Ip RMS Ip RMS Ip
10,000 7.4 17 8.7 20 10 23 10 23 10 23 10 23 10 23 10 23 10 23 10 23 10 23
15,000 8.3 19 10 23 12 27 13 30 15 35 15 35 15 35 15 35 15 35 15 35 15 35
20,000 9.1 21 11 25 13 29 14 33 17 39 20 46 20 46 20 46 20 46 20 46 20 46
25,000 9.8 23 12 27 13 31 15 35 18 42 22 50 25 58 25 58 25 58 25 58 25 58
30,000 10 24 13 29 14 33 16 37 20 45 23 53 29 66 30 69 30 69 30 69 30 69
35,000 11 25 13 30 15 35 17 39 20 47 24 56 30 69 35 81 35 81 35 81 35 81
40,000 12 27 14 32 16 37 18 41 21 49 25 58 31 72 36 83 40 92 40 92 40 92
50,000 13 29 15 34 17 40 19 44 23 53 27 63 34 78 39 89 48 111 50 115 50 115
60,000 13 30 16 36 18 42 20 47 25 57 29 67 36 83 41 94 51 118 60 138 60 138
80,000 14 33 17 40 20 46 23 52 27 62 32 73 40 91 45 104 57 130 67 153 77 176
100,000 16 36 19 43 22 50 24 56 29 67 34 79 43 98 49 112 61 140 72 165 83 190
150,000 18 41 21 49 25 57 28 64 33 77 39 90 49 112 56 128 70 160 82 189 94 217
200,000 20 45 24 54 27 63 31 71 37 84 43 100 53 123 61 141 77 176 90 208 104 239
The current limiting effect of A4BQ Class L fuses is presented in the table above. This table correlates actual fuse peak let-thru currents with equal value peak currents
reached in the first half cycle (worst case) of short circuits in unfused circuits. The let-thru current is expressed as “Apparent RMS Symmetrical Amperes” in order to be
more useful for practical applications. The currents are based on an assumed 15% power factor. Example: An A4BQ1200, when applied in a circuit with 40,000 RMS symmetrical amperes available, will limit that current during a short circuit, to an apparent 18,000 RMS symmetrical amperes. Under this condition, any equipment being protected would be subjected to only 18,000 RMS amperes.
A 6A 6
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