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Siemens 5SY4320-7 Miniature Circuit Breaker, 3-Pole, 20A, 400V, 10kA, C-Characteristic D70mm
Siemens 5SY4320-7 Miniature Circuit Breaker, 3-Pole, 20A, 400V, 10kA, C-Characteristic D70mm
Siemens 5SY4320-7 Miniature Circuit Breaker, 3-Pole, 20A, 400V, 10kA, C-Characteristic D70mm
Siemens 5SY4320-7 Miniature Circuit Breaker, 3-Pole, 20A, 400V, 10kA, C-Characteristic D70mm
Siemens 5SY4320-7 Miniature Circuit Breaker, 3-Pole, 20A, 400V, 10kA, C-Characteristic D70mm
Siemens 5SY4320-7 Miniature Circuit Breaker, 3-Pole, 20A, 400V, 10kA, C-Characteristic D70mm

SIEMENS

Siemens 5SY4320-7 Miniature Circuit Breaker, 3-Pole, 20A, 400V, 10kA, C-Characteristic D70mm Original Brand New

Model / SKU5SY4320-7

High-performance 3-pole Miniature Circuit Breaker designed for 400V systems. Featuring a 20 A rated current and a robust 10 kA switching capacity with a Type C tripping characteristic. Its standardized design (70 mm installation depth) ensures easy integration into distribution boards.

Original price was: $102.32.Current price is: $49.14.
In stockShips in 1–3 business days
  • ConditionOriginal Brand New
  • Warranty12 months
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Description

Overview

The Siemens 5SY4320-7 is a premium 3-pole Miniature Circuit Breaker (MCB) from the trusted SENTRON portfolio, engineered for superior electrical system protection against short circuits and overloads. Rated for a maximum of 400 V operating voltage and a dependable 10 kA short-circuit breaking capacity, this device is the benchmark for safety in industrial and commercial environments. The robust design and 70 mm installation depth allow for seamless integration into standard DIN rail assemblies.

Key Benefit

  • Unrivaled Safety: The high 10 kA breaking capacity guarantees reliable isolation of faults, minimizing damage to downstream equipment.

  • Application Versatility (C-Curve): The Type C tripping characteristic is perfectly suited for general system protection and circuits with medium inrush currents (e.g., lighting circuits, small motor loads).

  • Space & Time Saving: Features a compact design and simple terminal connections, speeding up installation and maximizing space within the panel.

  • Global Standard: Built to the highest international standards, ensuring compliance and reliable operation worldwide.

Functions & Features

  • 3-pole miniature circuit breaker for multi-phase protection

  • C-type characteristic suitable for general use in commercial and industrial circuits

  • Rated current: 20A, Voltage: 400V

  • Breaking capacity: 10kA

  • Standard D70mm width for easy panel installation

  • High mechanical and electrical durability

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Datasheet in PDF

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Specifications

SKU / Model5SY4320-7
BrandSIEMENS
product brand nameSENTRON
product designationMiniature circuit breaker
number of poles3
design of pole3P
tripping characteristic classC
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 value20 kA
energy limitation class3
power loss [W] / for rated value of the current / at AC / in hot operating state / per pole1.7 W
operational current-
● at 35 °C / rated value20 A
● at 45 °C / rated value18.54 A
● at 50 °C / rated value18.04 A
● at 55 °C / rated value17.5 A
● at 60 °C / rated value16.96 A
● at AC / rated value20 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
Weight0.476 kg
Dimensions58.00 × 94.00 × 84.00 mm

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