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SIEMENS

Siemens 5SJ4140-7HG40 Miniature Circuit Breaker 240V, 14kA, 1-Pole, 40A, UL489 Original Brand New

Model / SKU5SJ4140-7HG40

High-performance, 1-pole miniature circuit breaker (MCB) designed for branch circuit protection. Rated at 40A and 240V with a 14kA interrupting capacity, this Type C trip characteristic breaker is UL 489 listed, ensuring maximum safety for industrial and commercial applications.

Original price was: $118.12.Current price is: $63.54.
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  • ConditionOriginal Brand New
  • Warranty12 months
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Description

Overview

The Siemens 5SJ4140-7HG40 Miniature Circuit Breaker is designed to provide robust protection for electrical systems. With a rated voltage of 240V and breaking capacity of 14kA, it ensures safety and reliability in residential, commercial, and industrial installations. The 1-pole, 40A, C-curve configuration allows precise protection for circuits with moderate inrush currents.

Certified under UL 489, this breaker guarantees equal polarity and consistent performance. Its compact design (D=70 mm) makes it easy to install in distribution boards and control panels.

Key Features & Function

  • Rated Voltage: 240 V

  • Breaking Capacity: 14 kA

  • Poles: 1-pole

  • Current Rating: 40A

  • Tripping Curve: C-type, ideal for general-purpose circuits

  • Design: D=70 mm, compact and space-saving

  • Certification: UL 489 compliant, equal polarity

  • Function: Provides reliable overcurrent protection for electrical systems, preventing damage to wiring and devices

  • Application: Suitable for residential, commercial, and light industrial circuits

Benefit

  • Reliable Protection: Prevents overload and short-circuit damage

  • UL Certified: Ensures compliance with safety standards

  • Easy Installation: Compact 70 mm width fits standard panels

  • Durable & Long-lasting: Siemens engineering ensures high durability

  • Versatile: Works with a wide range of electrical systems

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Datasheet in PDF

Specifications

SKU / Model5SJ4140-7HG40
BrandSIEMENS
product brand nameSENTRON
product designationMiniature circuit breakers
design of the productMiniature circuit-breaker 5SJ4
number of poles1
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 / maximum120 V
● at DC / rated value / maximum60 V
● at DC / single channel / acc. to UL 489 and CSA C22.2 No. 5-02 / maximum60 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 pole4.8 W
operational current-
● at 30 °C / rated value40 A
● at 40 °C / rated value40 A
● at 45 °C / rated value38.8 A
● at 50 °C / rated value37.6 A
● at 55 °C / rated value36.3 A
● at 60 °C / rated value35.2 A
● at AC / rated value40 A
type of voltage supply / at AC / acc. to UL 489 and CSA C22.2 No. 5-02240/120
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.23514 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
Test Certificatesother
Special Test CertificateMiscellaneous
Weight0.163 kg
Dimensions21.00 × 93.00 × 83.00 mm

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