Siemens 5SJ4104-8HG42 Circuit Breaker 10kA, 1-Pole, D-Curve, 4A, UL 489, 277V Original Brand New
$56.00
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.
Availability: In stock
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
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UL 489 Certified: Approved for branch circuit protection in 277V AC systems, meeting stringent safety codes.
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High Breaking Capacity: Rated for up to 10kA, providing superior protection against electrical faults.
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D-Trip Characteristic: Prevents nuisance tripping in applications with high starting currents.
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Compact 1-Pole Design: Saves valuable space within electrical cabinets and control panels.
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Global Compliance: Meets international standards, making it a versatile choice for export-bound machinery.
Function
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Protects electrical circuits from overload and short circuits
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Automatically disconnects faulty circuits to prevent equipment damage
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Supports stable operation in demanding electrical environments
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Ensures system safety and regulatory compliance
Technical Specification
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Manufacturer: Siemens
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Product Number: 5SJ4104-8HG42
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Breaking Capacity: 10kA
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Number of Poles: 1-Pole
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Tripping Characteristic: D-Curve
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Rated Current: 4 A
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Standard: UL 489
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Rated Voltage: Up to 277V
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| Weight | 0.173 kg |
|---|---|
| Dimensions | 22.00 × 125.00 × 84.00 mm |
| Brand | SIEMENS |
| product brand name | SENTRON |
| product designation | Miniature circuit breakers |
| design of the product | Miniature circuit-breaker 5SJ4 |
| number of poles | 1 |
| tripping characteristic class | D |
| mechanical service life (switching cycles) / typical | 10 000 |
| installation environment regarding EMC | Suitable for environment B (immunity to interference not applicable) |
| reference code / acc. to DIN 40719 extended according to IEC 204-2 / acc. to IEC 750 | F |
| overvoltage category | 3 |
| degree of pollution | 3 |
| insulation voltage (Ui) / at AC / rated value | 440 V |
| supply voltage / at AC / rated value | 400 V |
| operating voltage | – |
| ● at AC / acc. to UL 489 and CSA C22.2 No. 5-02 / maximum | 277 V |
| ● at DC / rated value / maximum | 60 V |
| ● at DC / single channel / acc. to UL 489 and CSA C22.2 No. 5-02 / maximum | 60 V |
| ● at DC / 2-channel / acc. to UL 489 and CSA C22.2 No. 5-02 / maximum | 125 V |
| protection class IP | IP20, with connected conductors, IP 40 in the handle range |
| switching capacity current | – |
| ● acc. to EN 60898 / rated value | 10 kA |
| ● acc. to IEC 60947-2 / rated value | 15 kA |
| power loss [W] / for rated value of the current / at AC / in hot operating state / per pole | 1.6 W |
| operational current | – |
| ● at 30 °C / rated value | 4 A |
| ● at 40 °C / rated value | 4 A |
| ● at 45 °C / rated value | 3.9 A |
| ● at 50 °C / rated value | 3.8 A |
| ● at 55 °C / rated value | 3.7 A |
| ● at 60 °C / rated value | 3.6 A |
| ● at AC / rated value | 4 A |
| type of voltage supply / at AC / acc. to UL 489 and CSA C22.2 No. 5-02 | 480/277 |
| suitability for operation | Mechanical engineering / industry |
| product component / neutral conductor switching | No |
| product feature / touch protection | Yes |
| product component | – |
| ● tunnel terminals top | No |
| ● tunnel terminals bottom | No |
| ● combined terminal top | Yes |
| ● combined terminal bottom | Yes |
| product feature | – |
| ● halogen-free | Yes |
| ● sealable | Yes |
| ● silicon-free | Yes |
| product extension / installable / supplementary devices | Yes |
| product function / note | Terminal 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.235 | 10 kA |
| connectable conductor cross-section / finely stranded / with core end processing | – |
| tightening torque / with screw-type terminals / maximum | 3.5 N·m |
| position / of power supply cord | Any |
| installation depth | 70 mm |
| number of modular width units | 1 |
| fastening method | on standard mounting rail |
| mounting position | any |
| vibration resistance | 50 m/s² at 25 to 150Hz and 60m/s² at 35Hz (4sec) |
| ambient temperature / during operation | – |
| ambient temperature / during storage | – |
| ● minimum | -40 °C |
| ● maximum | 75 °C |
| reference code | – |
| ● acc. to DIN EN 61346-2 | F |
| ● acc. to IEC 81346-2 | F |
| Miscellaneous | – |
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