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Siemens 5SJ4102-8HG42 Miniature Circuit Breaker 1-Pole, 2A, Type D, 10kA, UL 489, 277V
Siemens 5SJ4102-8HG42 Miniature Circuit Breaker 1-Pole, 2A, Type D, 10kA, UL 489, 277V
Siemens 5SJ4102-8HG42 Miniature Circuit Breaker 1-Pole, 2A, Type D, 10kA, UL 489, 277V
Siemens 5SJ4102-8HG42 Miniature Circuit Breaker 1-Pole, 2A, Type D, 10kA, UL 489, 277V
Siemens 5SJ4102-8HG42 Miniature Circuit Breaker 1-Pole, 2A, Type D, 10kA, UL 489, 277V

SIEMENS

Siemens 5SJ4102-8HG42 Miniature Circuit Breaker 1-Pole, 2A, Type D, 10kA, UL 489, 277V Original Brand New

Model / SKU5SJ4102-8HG42

High-performance miniature circuit breaker (MCB) designed for branch circuit protection. Featuring a 1-pole configuration with a 2A current rating and a Type D tripping characteristic, it is fully compliant with UL 489 standards for applications up to 277V.

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 5SJ4 series is engineered specifically for the North American market, meeting the rigorous requirements of UL 489. This 1-pole circuit breaker provides robust protection for electrical installations in industrial, commercial, and residential settings. With a 10kA interrupting capacity, it ensures maximum safety by preventing damage from overloads and short circuits in high-inrush current environments.

Key Benefit

  • Global Compliance: Fully certified according to UL 489 and CSA C22.2, making it suitable for export and international projects.

  • High Inrush Handling: The Type D characteristic is ideal for circuits with high inductive loads, such as motors or transformers, preventing nuisance tripping.

  • Space-Saving Design: Its compact 1-pole width allows for efficient use of space within control panels and distribution boards.

  • Enhanced Safety: Provides reliable thermal-magnetic protection with a high breaking capacity of 10kA.

Function & Application

  • Branch Circuit Protection: Designed to protect electrical conductors and connected equipment.

  • Versatile Mounting: Easily clips onto standard DIN rails for rapid installation.

  • Application Scope: Ideal for HVAC systems, industrial control panels, and power supplies where 277V AC protection is required.

Technical Specification

  • Product Number: 5SJ4102-8HG42

  • Brand: Siemens

  • Breaking Capacity: 10kA

  • Number of Poles: 1-Pole

  • Tripping Curve: D

  • Rated Current: 2A

  • Standard: UL 489

  • Rated Voltage: Up to 277V

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Datasheet in PDF

Specifications

SKU / Model5SJ4102-8HG42
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 pole1.8 W
operational current-
● at 30 °C / rated value2 A
● at 40 °C / rated value2 A
● at 45 °C / rated value1.9 A
● at 50 °C / rated value1.9 A
● at 55 °C / rated value1.8 A
● at 60 °C / rated value1.8 A
● at AC / rated value2 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-
Weight0.175 kg
Dimensions22.00 × 125.00 × 84.00 mm

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