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SIEMENS

Siemens 5SY4306-8 Miniature Circuit Breaker 3-Pole, 6A, D-curve, 400V, 10kA Original Brand New

Model / SKU5SY4306-8

The Siemens 5SY4306-8 is a high-performance 3-pole miniature circuit breaker (MCB) designed for 400V systems. Featuring a 6A rated current and a Type D tripping curve, it provides robust protection for circuits with high inductive loads and a 10kA breaking capacity.

Original price was: $153.86.Current price is: $79.98.
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  • ConditionOriginal Brand New
  • Warranty12 months
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Description

Overview

The Siemens 5SY4306-8 is a high-performance miniature circuit breaker (MCB) designed for both residential and industrial electrical systems. With a 3-pole configuration, D-curve tripping, and 6A rating, it provides exceptional protection against overloads and short circuits. Rated for 400V AC and 10kA breaking capacity, this MCB ensures safety and reliability for demanding electrical installations.

Key Benefit

  • Enhanced Safety: Provides superior protection for electrical installations against thermal overload and short-circuit faults.

  • High Breaking Capacity: Rated for up to 10kA, ensuring stability in the event of a high-energy fault.

  • Easy Installation: Standardized design with a 70mm depth allows for quick integration into modern distribution boards and control cabinets.

  • Siemens Reliability: Built to international standards, ensuring long-term operational durability and minimal maintenance.

Function

  • Circuit Protection: Automatically trips during overload or short circuit events.

  • D-Curve Tripping: Ideal for circuits with high inrush currents, such as motors or transformers.

  • 3-Pole Design: Provides protection for three-phase circuits.

  • Easy Installation: Standard dimensions (D=70 mm) fit most DIN rail panels.

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Datasheet in PDF

Specifications

SKU / Model5SY4306-8
BrandSIEMENS
product brand nameSENTRON
product designationMiniature circuit breaker
number of poles3
design of pole3P
tripping characteristic classD
mechanical service life (switching cycles) / typical10 000
overvoltage categoryIII
degree of pollution3
type of voltage / of the operating voltageAC
insulation voltage (Ui)-
● with single-phase operation / at AC / rated value440 V
● with multi-phase operation / at AC / rated value440 V
supply voltage / with single-phase operation / at AC / rated value230 V
supply voltage-
operating voltage / at DC / rated value / maximum72 V
protection class IPIP20, with connected conductors
switching capacity current-
● at DC / acc. to IEC 60947-2 / rated value15 kA
● acc. to EN 60898 / rated value10 kA
● acc. to IEC 60947-2 / rated value35 kA
power loss [W] / for rated value of the current / at AC / in hot operating state / per pole1.6 W
operational current-
● at 35 °C / rated value6 A
● at 40 °C / rated value5.71 A
● at 45 °C / rated value5.56 A
● at 50 °C / rated value5.41 A
● at 55 °C / rated value5.25 A
● at 60 °C / rated value5.09 A
● at AC / rated value6 A
suitability for operationMechanical engineering / industry
product component / neutral conductor switchingNo
product feature / touch protectionYes
product component-
● combined terminal topYes
● combined terminal bottomYes
product feature-
● properties for main switches in accordance with EN 60204-1Yes
● halogen-freeYes
● sealableYes
● silicon-freeYes
product extension / installable / supplementary devicesYes
breaking capacity short-circuit current (Icn)-
● at AC / acc. to UL 1077 and CSA C22.2 No.2355 kA
connectable conductor cross-section / solid-
connectable conductor cross-section / stranded-
connectable conductor cross-section / finely stranded / with core end processing-
AWG number / as coded connectable conductor cross section-
tightening torque [lbf·in] / with screw-type terminals-
tightening torque / with screw-type terminals-
position / of power supply cordAny
installation depth70 mm
number of modular width units3
fastening methodQuick assembly system
mounting positionany
influence of the surrounding temperaturemax. 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-
ambient temperature / during storage-
● minimum-40 °C
● maximum75 °C
number of test cycles / for environmental testing / acc. to IEC 60068-2-306
reference code-
● acc. to DIN EN 61346-2F
● acc. to IEC 81346-2F
Weight0.469 kg
Dimensions58.00 × 94.00 × 84.00 mm

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