General Purpose US
US Fuses
Fuses
General Purpose
American Power Fuses
AMP-TRAP 2000
A4BQ (Class L TD)
®
Put the highest current-limitation...
at your service.
Amp-trap 2000
®
A4BQ fuses are 20% more current limit-
ing than any other Class L fuse on the market. When cor-
rectly coordinated, they bring a superior level of protec-
tion to service entrance equipment. Downstream circuit
components have maximum protection against short cir-
cuit 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 I
2
t) 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
• 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
Highlights
• Time Delay
• Industry’s Most Current-Limiting
Class L Fuse
• Pure Silver Elements
• AC & DC Rated
Applications
•
•
•
•
•
Mains, Feeders
Large Motors
Lighting, Heating and General Loads
Circuit Breaker Back-up
DC Rated: UPS DC Links, Battery
Disconnects, Other
DC Applications
Approvals
• UL Listed to Standard 248-10
(601-6000A)
• DC Listed to UL Standard 198L
(601-3000A)
• CSA Certified to Standard
C22.2 No. 248.10 (601-6000A)
Ratings
AC: 100 to 6000A 600VAC, 200k A I.R.(self certified for
600VAC, 300k A I.R.,UL witnessed) 4-second delay
at 500% rating
Note:
100-600A ratings are non-listed
DC: 601 to 3000A 600VDC, 100kA I.R.
*Please contact factory for special trigger actuator
GPUS
7
12/04
General Purpose US
US Fuses
Fuses
General Purpose
American Power Fuses
AMP-TRAP 2000
A4BQ (Class L TD)
®
A4BQ (601 to 6000) Let-Thru Current in kilo-Amperes
Available Fault 601
RMS AMPS
10,000
15,000
20,000
25,000
30,000
35,000
40,000
50,000
60,000
80,000
100,000
150,000
200,000
800
IP
20
23
25
27
29
30
32
34
36
40
43
49
54
1000
RMS IP
10
12
13
13
14
15
16
17
18
20
22
25
27
23
27
29
31
33
35
37
40
42
46
50
57
63
1200
RMS
10
13
14
15
16
17
18
19
20
23
24
28
31
IP
23
30
33
35
37
39
41
44
47
52
56
64
71
1600
RMS
10
15
17
18
20
20
21
23
25
27
29
33
37
2000
2500
3000
4000
IP RMS
23
35
46
58
69
81
83
89
94
104
112
128
141
10
15
20
25
30
35
40
48
51
57
61
70
77
5000
IP
23
35
46
58
69
81
92
115
138
153
165
189
208
6000
RMS
10
15
20
25
30
35
40
50
60
77
83
94
104
IP
23
35
46
58
69
81
92
115
138
176
190
217
239
RMS IP RMS
7.4
8.3
9.1
9.8
10
11
12
13
13
14
16
18
20
17
19
21
23
24
25
27
29
30
33
36
41
45
8.7
10
11
12
13
13
14
15
16
17
19
21
24
IP RMS
23
35
39
42
45
47
49
53
57
62
67
77
84
IP RMS
IP RMS
10
15
20
25
30
35
36
39
41
45
49
56
61
IP RMS
23
35
46
58
69
81
92
111
118
130
140
160
176
10
15
20
25
30
35
40
50
60
67
72
82
90
10 23
15 35
20 46
22 50
23 53
24 56
25 58
27 63
29 67
32 73
34 79
39 90
43 100
10
23
15
35
20
46
25
58
29
66
30
69
31
72
34
78
36
83
40
91
43
98
49 112
53 123
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 dur-
ing a short circuit, to an apparent 18,000 RMS symmetrical amperes. Under this condition, any equipment being protected would be sub-
jected to only 18,000 RMS amperes.
A4BQ 601 to 6000
MELTING TIME – CURRENT DATA, 600V FUSES
TIME IN SECONDS
GPUS
9
CURRENT IN AMPERES
12/04
嵌入式系统
京公网安备 11010802033920号
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved
电子工程世界
