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Siemens 5SJ4104-8HG42 Circuit Breaker 10kA, 1-Pole, D-Curve, 4A, UL 489, 277V
Siemens 5SJ4104-8HG42 Circuit Breaker 10kA, 1-Pole, D-Curve, 4A, UL 489, 277V
Siemens 5SJ4104-8HG42 Circuit Breaker 10kA, 1-Pole, D-Curve, 4A, UL 489, 277V
Siemens 5SJ4104-8HG42 Circuit Breaker 10kA, 1-Pole, D-Curve, 4A, UL 489, 277V
Siemens 5SJ4104-8HG42 Circuit Breaker 10kA, 1-Pole, D-Curve, 4A, UL 489, 277V
Siemens 5SJ4104-8HG42 Circuit Breaker 10kA, 1-Pole, D-Curve, 4A, UL 489, 277V

SIEMENS

Siemens 5SJ4104-8HG42 Circuit Breaker 10kA, 1-Pole, D-Curve, 4A, UL 489, 277V Original Brand New

Model / SKU5SJ4104-8HG42

High-performance single-pole miniature circuit breaker designed for branch circuit protection. Featuring a 4A current rating and a Type D tripping characteristic, this unit is certified according to UL 489 standards for 277V AC applications, ensuring robust safety and reliability in industrial environments.

Original price was: $142.53.Current price is: $76.67.
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  • ConditionOriginal Brand New
  • Warranty12 months
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Description

Overview

The Siemens 5SJ4104-8HG42 Circuit Breaker is a high-performance miniature circuit breaker designed for reliable overcurrent protection in industrial and commercial electrical systems. With a 10kA breaking capacity, 1-pole configuration, and D-curve tripping characteristic, this breaker is ideal for circuits with high inrush currents. It complies with UL 489 standards and supports voltages up to 277V, ensuring safety, durability, and regulatory compliance.

Benefit

  • UL 489 Certified: Approved for branch circuit protection in 277V AC systems, meeting stringent safety codes.

  • High Breaking Capacity: Rated for up to 10kA, providing superior protection against electrical faults.

  • D-Trip Characteristic: Prevents nuisance tripping in applications with high starting currents.

  • Compact 1-Pole Design: Saves valuable space within electrical cabinets and control panels.

  • Global Compliance: Meets international standards, making it a versatile choice for export-bound machinery.

Function

  • Protects electrical circuits from overload and short circuits

  • Automatically disconnects faulty circuits to prevent equipment damage

  • Supports stable operation in demanding electrical environments

  • Ensures system safety and regulatory compliance

Technical Specification

  • Manufacturer: Siemens

  • Product Number: 5SJ4104-8HG42

  • Breaking Capacity: 10kA

  • Number of Poles: 1-Pole

  • Tripping Characteristic: D-Curve

  • Rated Current: 4 A

  • Standard: UL 489

  • Rated Voltage: Up to 277V

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Datasheet in PDF

Specifications

SKU / Model5SJ4104-8HG42
BrandSIEMENS
product brand nameSENTRON
product designationMiniature circuit breakers
design of the productMiniature circuit-breaker 5SJ4
number of poles1
tripping characteristic classD
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
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 pole1.6 W
operational current-
● at 30 °C / rated value4 A
● at 40 °C / rated value4 A
● at 45 °C / rated value3.9 A
● at 50 °C / rated value3.8 A
● at 55 °C / rated value3.7 A
● at 60 °C / rated value3.6 A
● at AC / rated value4 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 units1
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-
Weight0.173 kg
Dimensions22.00 × 125.00 × 84.00 mm

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