5SY4450-8

Data sheet 5SY4450-8 Miniature circuit breaker 400 V 10kA, 4-pole, D, 50 A, D=70 mm Model product brand name SENTRON product designation Miniature circuit breaker General technical data number of poles 4 number of poles / note 4P tripping characteristic class D mechanical service life (switching cycles) / typical 10 000 overvoltage category III degree of pollution 3 Voltage insulation voltage ● with single-phase operation / at AC / rated value 440 V ● with multi-phase operation / at AC / rated value 440 V supply voltage / with single-phase operation / at AC / rated value 230 V Supply voltage type of voltage AC operational current / at AC / rated value 50 A supply voltage ● at AC / rated value 400 V operating voltage / at DC / rated value / maximum 72 V supply voltage frequency / rated value 50/60 Hz Protection class protection class IP IP20, with connected conductors Switching capacity switching capacity current ● at DC / acc. to IEC 60947-2 / rated value 15 kA ● acc. to EN 60898 / rated value 10 kA ● acc. to IEC 60947-2 / rated value 15 kA Dissipation power loss [W] / for rated value of the current / at AC / in hot operating state / per pole 3.7 W suitability for operation Mechanical engineering / industry Product details product function / neutral conductor switching No product feature / touch protection Yes 5SY44508 Page 1/2 1.19.2021 Subject to change without notice © Copyright Siemens product component ● combined terminal top Yes ● combined terminal bottom Yes product feature ● properties for main switches in accordance with EN 60204-1 Yes ● halogen-free Yes ● sealable Yes ● silicon-free Yes product extension / installable / supplementary devices Yes Short circuit breaking capacity short-circuit current (Icn) ● at AC / acc. to UL 1077 and CSA C22.2 No.235 5 kA Connections connectable conductor cross-section / solid ● minimum 0.75 mm² ● maximum 35 mm² connectable conductor cross-section / stranded ● minimum 0.75 mm² ● maximum 35 mm² connectable conductor cross-section / finely stranded / with core end processing ● minimum 0.75 mm² ● maximum 25 mm² AWG number / as coded connectable conductor cross section ● minimum 18 ● maximum 4 tightening torque [lbf·in] / with screw-type terminals ● minimum 22 lbf·in ● maximum 31 lbf·in tightening torque / with screw-type terminals ● minimum 2.5 N·m ● maximum 3.5 N·m position / of power supply cord Any Mechanical Design height 90 mm width 72 mm depth 76 mm installation depth 70 mm number of modular width units 4 fastening method Quick assembly system mounting position any net weight 637 g Environmental conditions influence of the surrounding temperature max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C vibration resistance / acc. to IEC 60068-2-6 ±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz ambient temperature / during operation ● minimum -40 °C ● maximum 70 °C ambient temperature / during storage ● minimum -40 °C ● maximum 75 °C number of test cycles / for environmental testing / acc. to IEC 60068-2-30 6 Certificates reference code ● acc. to DIN EN 61346-2 F ● acc. to IEC 81346-2 F 5SY44508 Page 2/3 1.19.2021 Subject to change without notice © Copyright Siemens General Product Approval General Product Approval Miscellaneous Declaration of Conformity Test Certificates Miscellaneous Marine / Shipping Marine / Shipping Special Test Certificate Railway Vibration and Shock Confirmation Further information Information- and Downloadcenter (Catalogs, Brochures,…) http://www.siemens.com/lowvoltage/catalogs Industry Mall (Online ordering system) https://mall.industry.siemens.com/mall/en/en/Catalog/product?mlfb=5SY4450-8 Service&Support (Manuals, Certificates, Characteristics, FAQs,...) https://support.industry.siemens.com/cs/ww/en/ps/5SY4450-8 Image database (product images, 2D dimension drawings, 3D models, device circuit diagrams, ...) http://www.automation.siemens.com/bilddb/cax_en.aspx?mlfb=5SY4450-8 Tender specifications http://www.siemens.com/specifications 5SY44508 Page 3/4 1.19.2021 Subject to change without notice © Copyright Siemens 5SY44508 Page 4/4 1.19.2021 Subject to change without notice © Copyright Siemens