AMP-TRAP®–Form 101 A70QS SEMICONDUCTOR PROTECTION FUSES A70QS Amp-trap® Semiconductor Protection fuses were developed in response to the need for improved overall performance of 700 volt semiconductor fuses for new equipment requirements. A70QS fuses have lower I2t for better protection, longer life when subjected to cyclic loading, plus lower watts loss. A70QS is the best choice to protect dynamic solid state equipment such as motor drives, UPS, etc. Features / Benefits ➤ Very Low l2t for improved protection of equipment ➤ Superior cycling ability for long, reliable life on high cyclic loading ➤ Low watts loss for cooler operation ➤ 700V AC/DC rating gives greater design versatility ➤ Ultra compact sizes allow down-sizing of existing equipment Ratings ➤ AC: 35-800A 700VAC, 200kA I.R. HIGHLIGHTS: APPLICATIONS: 700V AC/DC Rated 2 ➤ Very Low l t ➤ Low Watts Loss ➤ Superior Cycling Ability ➤ ➤ Protection of 700V or less motor drives, UPS, inverters, etc. 35-200 225-600 700-800 P243C ➤ DC: Tested to UL Standard 198L Parameters (35-800A) ➤ CSA Certified File LR 12636 Catalog Numbering System Single Pole Fuse Blocks for A70QS Fuses FUSE BLOCK CATALOG NUMBER ➤ AC: Guide No. JFHR2 ➤ DC: 35-800A 700VDC, 100kA I.R. L/R = 10ms Amp-trap® Fuse FUSE AMPERE RATING Approvals ➤ UL Recognized Component, AC/DC P266A 15C 375 A 70 QS 150 - 4 A Rated Volts - 700 70 Style QS Amperes* 150 Mounting Types* Blades, bolt-in 4,4K * For ampere ratings and types not listed, consult the factory. D 32 AMP-TRAP®–Form 101 A70QS SEMICONDUCTOR PROTECTION FUSES Standard Fuse Ampere Ratings, Catalog Numbers AMPERE RATING CATALOG NUMBER AMPERE RATING CATALOG NUMBER AMPERE RATING 35 40 50 60 70 80 90 A7OQS35-4 A7OQS40-4 A7OQS50-4 A7OQS60-4 A7OQS70-4 A7OQS80-4 A7OQS90-4 100 125 125 150 150 175 175 A7OQS100-4 A7OQS125-4 A7OQS125-4K A7OQS150-4 A7OQS150-4K A7OQS175-4 A7OQS175-4K 200 200 250 300 350 400 450 AMPERE RATING CATALOG NUMBER A7OQS200-4 A7OQS200-4K A7OQS250-4 A7OQS300-4 A7OQS350-4 A7OQS400-4 A7OQS450-4 450 500 500 600 600 700 800 CATALOG NUMBER A7OQS450-4K A7OQS500-4 A70QS500-4K A7OQS600-4 A7OQS600-4K A7OQS700-4 A7OQS800-4 For ampere ratings and styles not listed, call Technical Services. (including indicators) Dimensions CATALOG NUMBER MOUNTING TYPE A70QS35 to 100 4 A70QS125 to 200 4 A70QS125 to 200 4K A70QS225 to 400 4 A70QS450 to 600 4 A70QS450 to 600 4K A70QS700 to 800 4 A B 4.38 (111) 4.38 (111) 5.09 (129) 5.09 (129) 5.09 (129) 7.09 (180) 7.09 (180) 1.00 (25.4) 1.22 (31.0) 1.22 (31.0) 1.50 (38.1) 2.00 (50.8) 2.00 (50.8) 2.50 (63.5) DIMENSIONS - INCHES (mm) C D E F 2.88 (73.0) 2.88 (73.0) 2.88 (73.0) 2.84 (72.2) 2.84 (72.2) 2.84 (72.2) 2.84 (72.2) 3.69 (93.6) 3.69 (93.6) 4.19 (106) 4.16 (106) 4.16 (106) 6.16 (156) 5.28 (134) 3.50 (88.9) 3.56 (90.5) 3.50 (88.0) 3.53 (89.7) 3.53 (89.7) 3.53 (89.7) 4.91 (125) 0.31 (7.9) 0.31 (7.9) 0.41 (10.3) 0.40 (10.3) 0.41 (10.3) 0.53 (13.5) 0.53 (13.5) G H 0.75 (19.0) 1.00 (25.4) 1.00 (25.4) 1.50 (38.1) 1.50 (38.1) 1.50 (38.1) 2.00 (50.8) 0.13 (3.2) 0.19 (4.8) 0.19 (4.8) 0.25 (6.4) 0.25 (6.4) 0.25 (6.4) 0.38 (9.5) D I2t Data – 700 Volts AC, 200kA Fault 700 VAC Fig. A Load Fault 700 VAC Fig. B Clearing I2t vs. AC Operating Voltage 2 35 40 50 60 70 80 90 100 125 150 175 200 225 250 300 350 400 450 500 600 700 800 I2t DATA CLEARING AT 700V AC MELTING 1 FUSE 2 FUSES IN (FIG. A) SERIES (FIG. B) (A2s x 103) (A2s x 103) (A2s x 103) 0.13 0.47 0.27 0.33 0.58 0.16 0.24 0.86 0.49 0.32 1.2 0.69 0.50 1.8 1.0 0.65 2.3 1.3 0.83 3.0 1.7 2.1 3.6 1.0 2.1 6.9 4.0 3.3 11 6.3 8.0 14 4.2 5.9 19 11 17 30 9.0 12.6 42 24 16.7 55 32 21.5 72 41 57 99 29.7 36.7 125 72 47.1 160 92 222 127 65.2 103.6 332 190 248 433 135.3 Correction Factor for I t FUSE AMPERE RATING Operating Voltage (AC RMS Volts) D 33 Load AMP-TRAP®–Form 101 A70QS SEMICONDUCTOR PROTECTION FUSES A70QS35 to 800 Time in Seconds Melting Time – Current Data, 700V Fuses Current in Amperes Maximum Instantaneous Peak Let-Thru Amperes Peak Let-Thru Current Data – A70QS35 to 800, 700 Volts AC Available Current in RMS Symmetrical Amperes D 34 AMP-TRAP®–Form 101 A70QS SEMICONDUCTOR PROTECTION FUSES AMPERE RATING 2 CLEARING I t 2 3 (A sx10 ) 35 40 50 70 80 90 100 125 150 175 200 225 250 300 350 400 450 500 600 700 800 0.25 0.35 0.60 1.3 1.8 2.4 3.1 5.3 8.1 12 16 21.5 27.5 42 63 85 115 150 201 325 450 Maximum Peak Arc Volts Clearing I2t at 700V DC, 100kA, L/R = 10 ms D Circuit Voltage (Volts RMS) Watts Loss at Rated Current DC Voltage Capability vs. Time Constant AMPERE RATING WATTS LOSS (w) AMPERE RATING WATTS LOSS (w) 35 40 50 60 70 80 90 100 125 150 175 6.2 7.5 9.8 12 15 18 20 24 22 29 35 200 225 250 300 350 400 450 500 600 700 800 41 37 42 53 64 75 78 92 116 125 143 DC Voltage Capability Correction Factor for Watts Loss Watts Loss vs. % Rated Current L/R Time Constant (ms) Percent Rated Current D 35