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Siemens 5SY5120-7 Miniature Circuit Breaker 1-Pole, 20A, Type C, Universal Current
Siemens 5SY5120-7 Miniature Circuit Breaker 1-Pole, 20A, Type C, Universal Current
Siemens 5SY5120-7 Miniature Circuit Breaker 1-Pole, 20A, Type C, Universal Current
Siemens 5SY5120-7 Miniature Circuit Breaker 1-Pole, 20A, Type C, Universal Current
Siemens 5SY5120-7 Miniature Circuit Breaker 1-Pole, 20A, Type C, Universal Current

SIEMENS

Siemens 5SY5120-7 Miniature Circuit Breaker 1-Pole, 20A, Type C, Universal Current Original Brand New

Model / SKU5SY5120-7

High-performance 1-pole miniature circuit breaker designed for universal current applications. Featuring a 20A rated current and Type C tripping characteristic, it provides reliable protection for 220V DC and 230/400V AC circuits with a 10kA switching capacity.

Original price was: $45.90.Current price is: $23.86.
In stockShips in 1–3 business days
  • ConditionOriginal Brand New
  • Warranty12 months
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Description

Overview

The Siemens 5SY5120-7 is part of the premium Sentron series, engineered for demanding industrial and residential electrical environments. This "Universal Current" (UC) device is uniquely designed to handle both AC and DC voltages, making it an incredibly versatile component for solar (PV) systems, industrial control panels, and automation infrastructure.

Key Benefit

  • Dual Voltage Versatility: Specifically rated for both AC and DC applications, reducing inventory complexity.

  • Enhanced Safety: The Type C tripping characteristic is ideal for circuits with higher peak starting currents (like motors or lamps).

  • High Breaking Capacity: Rated at 10kA, ensuring the device can safely interrupt significant fault currents.

  • Compact Design: 1-pole configuration saves valuable rail space in electrical cabinets.

Function & Features

  • Tripping Characteristic: Type C (Standard protection for inductive loads).

  • Universal Current (UC): Rated for 220V DC and 230/400V AC.

  • Rated Current: 20 Amperes.

  • Mounting: Standard DIN rail mounting for easy installation.

  • Durability: Built to Siemens' rigorous industrial quality standards for long-term mechanical and electrical life.

Technical Specification

  • Brand: Siemens

  • Product Number: 5SY5120-7

  • Rated Current: 20A

  • Tripping Characteristic: C-Curve

  • Number of Poles: 1-Pole

  • Rated Voltage:

    • 220 V DC

    • 230/400 V AC

  • Breaking Capacity: 10kA

  • Mounting Type: DIN Rail

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Datasheet in PDF

Specifications

SKU / Model5SY5120-7
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/DC
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-
● at DC / rated value220 V
operating voltage / at DC / rated value / maximum250 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
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 operationuniversal current
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 DC / acc. to EN 60898-210 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 cordAC as required, observe DC polarity
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
Weight0.167 kg
Dimensions21.00 × 93.00 × 83.00 mm

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