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Siemens 5SY4120-7 Miniature Circuit Breaker 230/400V, 10kA, 1-Pole, C 20A (D=70mm)
Siemens 5SY4120-7 Miniature Circuit Breaker 230/400V, 10kA, 1-Pole, C 20A (D=70mm)
Siemens 5SY4120-7 Miniature Circuit Breaker 230/400V, 10kA, 1-Pole, C 20A (D=70mm)
Siemens 5SY4120-7 Miniature Circuit Breaker 230/400V, 10kA, 1-Pole, C 20A (D=70mm)
Siemens 5SY4120-7 Miniature Circuit Breaker 230/400V, 10kA, 1-Pole, C 20A (D=70mm)
Siemens 5SY4120-7 Miniature Circuit Breaker 230/400V, 10kA, 1-Pole, C 20A (D=70mm)

SIEMENS

Siemens 5SY4120-7 Miniature Circuit Breaker 230/400V, 10kA, 1-Pole, C 20A (D=70mm) Original Brand New

Model / SKU5SY4120-7

High-performance 1-pole Miniature Circuit Breaker designed for superior electrical protection. Featuring a 20A rated current and Type C tripping characteristic, it is ideal for circuits with higher inrush currents. With a 10kA breaking capacity and a compact 70mm mounting depth, it ensures safety and reliability in demanding environments.

Original price was: $18.49.Current price is: $13.49.
Out of stockSubject to sourcing — request a quote
  • ConditionOriginal Brand New
  • Warranty12 months
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Description

Overview

The Siemens 5SY4120-7 is a high-performance miniature circuit breaker designed for residential, commercial, and industrial electrical systems. This 1-pole, 20A circuit breaker is ideal for protecting your electrical circuits from overloads and short circuits. It operates at 230/400V and features a 10kA breaking capacity, ensuring enhanced protection and safety.

Key Benefit

  • High Breaking Capacity: With a 10kA rating, the Siemens 5SY4120-7 can withstand large fault currents, minimizing potential damage to electrical circuits and equipment.

  • Compact Design: At a width of just 70mm, it offers easy integration into standard electrical panels without compromising on performance.

  • Reliable Protection: Designed with a Type C characteristic, it is ideal for use in circuits with moderate inrush currents, such as lighting and heating installations.

  • Easy Installation: The 1-pole configuration and straightforward design allow for quick and efficient installation in various electrical setups.

Function

  • Overload Protection: The 20A current rating ensures protection against overloads, preventing circuit failure.

  • Short Circuit Protection: With its 10kA breaking capacity, the circuit breaker provides reliable protection in case of short circuits, reducing the risk of fire or equipment damage.

  • Single-Pole Operation: The 1-pole design is perfect for single-phase applications, protecting individual circuits in residential or light commercial environments.

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Datasheet in PDF

Specifications

SKU / Model5SY4120-7
BrandSIEMENS
product brand nameSENTRON
product designationMiniature circuit breaker
number of poles1
design of pole1P
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 40 °C / rated value18.78 A
● at 45 °C / rated value18.14 A
● at 50 °C / rated value17.48 A
● at 55 °C / rated value16.8 A
● at 60 °C / rated value16.08 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 units1
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
Weight0.153 kg
Dimensions21.00 × 93.00 × 83.00 mm

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