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Siemens 5SY4350-7 Miniature Circuit Breaker 3-Pole, C-Curve, 50A, 10kA, 400V
Siemens 5SY4350-7 Miniature Circuit Breaker 3-Pole, C-Curve, 50A, 10kA, 400V
Siemens 5SY4350-7 Miniature Circuit Breaker 3-Pole, C-Curve, 50A, 10kA, 400V
Siemens 5SY4350-7 Miniature Circuit Breaker 3-Pole, C-Curve, 50A, 10kA, 400V
Siemens 5SY4350-7 Miniature Circuit Breaker 3-Pole, C-Curve, 50A, 10kA, 400V
Siemens 5SY4350-7 Miniature Circuit Breaker 3-Pole, C-Curve, 50A, 10kA, 400V

SIEMENS

Siemens 5SY4350-7 Miniature Circuit Breaker 3-Pole, C-Curve, 50A, 10kA, 400V Original Brand New

Model / SKU5SY4350-7

High-performance Miniature Circuit Breaker (MCB) designed for 400V systems. Featuring a 3-pole configuration, 50A rated current, and a Type C tripping characteristic, it provides reliable protection against overloads and short circuits with a 10kA breaking capacity.

Original price was: $253.08.Current price is: $115.82.
In stockShips in 1–3 business days
  • ConditionOriginal Brand New
  • Warranty12 months
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Description

Overview

The Siemens 5SY4350-7 Miniature Circuit Breaker (MCB) is a high-performance electrical protection device designed for reliable overload and short-circuit protection in low-voltage electrical systems. Built to Siemens’ stringent quality standards, this 3-pole, C-curve MCB ensures safe and efficient operation in residential, commercial, and industrial applications.

With a rated current of 50A, breaking capacity of 10kA, and operating voltage up to 400V, this miniature circuit breaker offers dependable protection for demanding electrical environments.

Key Benefit

  • Reliable Protection: Specifically designed to protect cables and electrical systems from damage caused by overcurrents.

  • High Breaking Capacity: Rated at 10kA, making it suitable for industrial applications with higher fault current potential.

  • Fast Installation: Standard DIN rail mounting and a compact 70mm depth allow for quick and easy setup.

  • Global Standards: Complies with international safety standards, ensuring long-term durability and operational safety.

Function & Features

  • Rated Voltage: 400 V

  • Rated Current: 50 A

  • Number of Poles: 3-Pole

  • Tripping Curve: Type C

  • Breaking Capacity: 10 kA

  • Mounting: DIN rail

  • Depth (D): 70 mm

  • Standard Compliance: IEC/EN standards

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Datasheet in PDF

Specifications

SKU / Model5SY4350-7
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 value15 kA
energy limitation class3
power loss [W] / for rated value of the current / at AC / in hot operating state / per pole3.8 W
operational current-
● at 35 °C / rated value50 A
● at 45 °C / rated value47 A
● at 50 °C / rated value45.95 A
● at 55 °C / rated value44.9 A
● at 60 °C / rated value43.8 A
● at AC / rated value50 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
Weight0.496 kg
Dimensions58.00 × 94.00 × 84.00 mm

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