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Siemens 5SJ4220-7HG42 Circuit Breaker 10kA, 2-Pole, C, 20A UL 489-480Y/277V
Siemens 5SJ4220-7HG42 Circuit Breaker 10kA, 2-Pole, C, 20A UL 489-480Y/277V
Siemens 5SJ4220-7HG42 Circuit Breaker 10kA, 2-Pole, C, 20A UL 489-480Y/277V
Siemens 5SJ4220-7HG42 Circuit Breaker 10kA, 2-Pole, C, 20A UL 489-480Y/277V
Siemens 5SJ4220-7HG42 Circuit Breaker 10kA, 2-Pole, C, 20A UL 489-480Y/277V

SIEMENS

Siemens 5SJ4220-7HG42 Circuit Breaker 10kA, 2-Pole, C, 20A UL 489-480Y/277V Original Brand New

Model / SKU5SJ4220-7HG42

High-performance miniature circuit breaker (MCB) designed for demanding industrial applications. This 2-pole, 20A breaker features a Type C tripping characteristic and is fully compliant with UL 489 standards for 480Y/277V systems, providing reliable 10kA short-circuit protection.

Original price was: $285.51.Current price is: $153.57.
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  • ConditionOriginal Brand New
  • Warranty12 months
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Description

Overview

The Siemens 5SJ4220-7HG42 is a high-performance circuit breaker designed for reliable protection in electrical systems. This 2-pole breaker has a 20A current rating and can handle a short-circuit capacity of up to 10kA, providing optimal protection for circuits. With compliance to UL 489 standards and rated for 480Y/277V applications, the Siemens 5SJ4220-7HG42 ensures safety, durability, and reliability in both residential and commercial electrical installations.

Key Features

  • Current Rating: 20A

  • Poles: 2-pole

  • Short-Circuit Rating: 10kA

  • Voltage Rating: 480Y/277V

  • Compliance: UL 489

  • Trip Curve: Type C, suitable for a wide range of applications.

  • Industry Standard: Designed to meet industry standards for maximum safety.

Benefit

  • Enhanced Safety: Protects electrical systems from overcurrents and short circuits.

  • Durability: Siemens products are known for their long-lasting performance and reliability.

  • Versatility: Ideal for use in both residential and commercial applications.

  • Easy Installation: Designed for straightforward installation with standard connections.

Function

The Siemens 5SJ4220-7HG42 Circuit Breaker is designed to protect electrical circuits from damage caused by overcurrent or short circuit situations. When a fault is detected, the breaker will trip, disconnecting the circuit to prevent further damage to electrical components. This breaker is essential in maintaining the safety and integrity of electrical systems, particularly in industrial environments and commercial buildings.

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Datasheet in PDF

Specifications

SKU / Model5SJ4220-7HG42
BrandSIEMENS
product brand nameSENTRON
product designationMiniature circuit breakers
design of the productMiniature circuit-breaker 5SJ4
number of poles2
tripping characteristic classC
mechanical service life (switching cycles) / typical10 000
installation environment regarding EMCSuitable for environment B (immunity to interference not applicable)
reference code / acc. to DIN 40719 extended according to IEC 204-2 / acc. to IEC 750F
overvoltage category3
degree of pollution3
type of voltage / of the operating voltageAC/DC
insulation voltage (Ui) / at AC / rated value440 V
supply voltage / at AC / rated value400 V
operating voltage-
● at AC / acc. to UL 489 and CSA C22.2 No. 5-02 / maximum277 V
● at DC / rated value / maximum60 V
● at DC / single channel / acc. to UL 489 and CSA C22.2 No. 5-02 / maximum60 V
● at DC / 2-channel / acc. to UL 489 and CSA C22.2 No. 5-02 / maximum125 V
protection class IPIP20, with connected conductors, IP 40 in the handle range
switching capacity current-
● acc. to EN 60898 / rated value10 kA
● acc. to IEC 60947-2 / rated value15 kA
power loss [W] / for rated value of the current / at AC / in hot operating state / per pole2.4 W
operational current-
● at 30 °C / rated value20 A
● at 40 °C / rated value20 A
● at 45 °C / rated value19.4 A
● at 50 °C / rated value19 A
● at 55 °C / rated value18.5 A
● at 60 °C / rated value18 A
● at AC / rated value20 A
type of voltage supply / at AC / acc. to UL 489 and CSA C22.2 No. 5-02480/277
suitability for operationMechanical engineering / industry
product component / neutral conductor switchingNo
product feature / touch protectionYes
product component-
● tunnel terminals topNo
● tunnel terminals bottomNo
● combined terminal topYes
● combined terminal bottomYes
product feature-
● halogen-freeYes
● sealableYes
● silicon-freeYes
product extension / installable / supplementary devicesYes
product function / noteTerminal tightening torque for Cu, 60/75°C; 3.5Nm/31lb.in
breaking capacity short-circuit current (Icn) / at AC / acc. to UL 1077 and CSA C22.2 No.23510 kA
connectable conductor cross-section / finely stranded / with core end processing-
tightening torque / with screw-type terminals / maximum3.5 N·m
position / of power supply cordAny
installation depth70 mm
number of modular width units2
fastening methodon standard mounting rail
mounting positionany
vibration resistance50 m/s² at 25 to 150Hz and 60m/s² at 35Hz (4sec)
ambient temperature / during operation-
ambient temperature / during storage-
● minimum-40 °C
● maximum75 °C
reference code-
● acc. to DIN EN 61346-2F
● acc. to IEC 81346-2F
Miscellaneous-
Weight0.339 kg
Dimensions40.00 × 125.00 × 84.00 mm

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