A70QS MERSEN | Alldatasheet

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MERSEN.COM HS 22 Mersen products have been designed by Mersen for a range of specific applications to be operated depending on particular specification and conditions. Mersen makes no representation or/and warranty, and waives any liability, either express or implied for products’ reliability and life time or technical performance in case Mersen has not been provided with customer’s specifications or if the products are not purchased directly from Mersen or its distributors and/or agents. © 2025 Mersen. All rights reserved. Mersen reserves the right to change, adapt, limit or discontinue its products. Therefore the data provided herein are for information only and are not contractually binding. To ensure that Mersen provides the best solution to your needs, please contact and provide Mersen with all relevant technical specifications and conditions. A70QS Amp-Trap® Form 101 HIGH SPEED FUSES A70QS Amp-Trap® high speed fuses were developed in response to the need for improved overall performance of 700V 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 I2t 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 Fuse Mounting Type Fuse Ampere Rating Catalog No. A70QS-4 35-200 P243C A70QS-4K 1 25-200 P266A A70QS-4 225-600 P266A A70QS-4K 450-600 FH70F3 A70QS-4 700-800 1SC375 RATINGS
  • Volts: 700VAC/VDC
  • Amps: 35 to 800A
  • I.R.: 200kA I.R. AC; 100kA I.R. DC
  • L/R: 10ms HIGHLIGHTS
  • 700V AC/DC rated
  • Very low I2t
  • Low watts loss
  • Superior cycling ability
  • All available with indicator (IL)

APPLICATIONS

  • Protection of 700V or less motor drives, UPS, inverters, etc. APPROVALS/STANDARDS
  • UL recognized component, AC/DC UL file E60314
  • AC: guide no. JFHR2
  • DC: tested to UL standard 198L parameters (35-800A)
  • CSA certified File LR 12636 SINGLE POLE FUSE BLOCKS FOR A70QS FUSES Catalog Numbering System A Amp-Trap® Fuse Rated Volts - 700 QS Style 150 Amperes - 4 Mounting Types* Blades, bolt-in: 4K

MERSEN.COM HS 23 HIGH SPEED FUSES Mersen products have been designed by Mersen for a range of specific applications to be operated depending on particular specification and conditions. Mersen makes no representation or/and warranty, and waives any liability, either express or implied for products’ reliability and life time or technical performance in case Mersen has not been provided with customer’s specifications or if the products are not purchased directly from Mersen or its distributors and/or agents. © 2025 Mersen. All rights reserved. Mersen reserves the right to change, adapt, limit or discontinue its products. Therefore the data provided herein are for information only and are not contractually binding. To ensure that Mersen provides the best solution to your needs, please contact and provide Mersen with all relevant technical specifications and conditions. A70QS Amp-Trap® Form 101 * For ampere ratings and styles not listed (including indicators), call Technical Services at 978-248-8914. CATALOG NUMBERS (AMPS) A7OQS35-4 A7OQS80-4 A7OQS150-4 A7OQS200-4K A7OQS400-4 A7OQS600-4 A7OQS40-4 A7OQS90-4 A7OQS150-4K A7OQS225-4 A7OQS450-4 A7OQS600-4K A7OQS50-4 A7OQS100-4 A7OQS1 75-4 A7OQS250-4 A7OQS450-4K A7OQS700-4 A7OQS60-4 A7OQS1 25-4 A7OQS1 75-4K A7OQS300-4 A7OQS500-4 A7OQS800-4 A7OQS70-4 A7OQS1 25-4K A7OQS200-4 A7OQS350-4 A7OQS500-4K DIMENSIONS Outline Ref. Mounting Type Dimensions - Inches (mm) A B C D E F G H A70QS35 to 100 4 4.38 (111) 1.00 (25.4) 2.88 (73.0) 3.69 (93.6) 3.50 (88.9) 0.31 (7 .9) 0.75 (19.0) 0 .13 (3.2) A70QS1 25 to 200 4 4.38 (111) 1.22 (31.0) 2.88 (73.0) 3.69 (93.6) 3.56 (90.5) 0.31 (7 .9) 1.00 (25.4) 0.19 (4.8) A70QS1 25 to 200 4K 5.09 (1 29) 1.22 (31.0) 2.88 (73.0) 4.19 (106) 3.50 (88.0) 0.41 (10.3) 1.00 (25.4) 0.19 (4.8) A70QS225 to 400 4 5.09 (1 29) 1.50 (38.1) 2.84 (72.2) 4.16 (106) 3.53 (89.7) 0.40 (10.3) 1.00 (25.4) 0.25 (6.4) A70QS450 to 600 4 5.09 (1 29) 2.00 (50.8) 2.84 (72.2) 4.16 (106) 3.53 (89.7) 0.41 (10.3) 1.50 (38.1) 0.25 (6.4) A70QS450 to 600 4K 7. 0 9 (180) 2.00 (50.8) 2.84 (72.2) 6.16 (156) 3.53 (89.7) 0.53 (1 3.5) 1.50 (38.1) 0.25 (6.4) A70QS700 to 800 4 7. 0 9 (180) 2.50 (63.5) 2.84 (72.2) 5.28 (1 34) 4.91 (1 25) 0.53 (1 3.5) 2.00 (50.8) 0.38 (9.5)