Siemens 5SJ4111-8HG42 Miniature Circuit Breaker, 1-Pole, 5A, D-Characteristic, 10kA, UL 489 Rated Original Brand New
$53.33
High-performance 1-pole miniature circuit breaker (MCB) designed for branch circuit protection. It features a 5A current rating and a D-trip characteristic, specifically engineered for circuits with high inrush currents. Certified under UL 489, it provides reliable 10kA switching capacity at 277V AC.
Availability: In stock
Overview
The Siemens 5SJ4 series is the industry standard for versatile electrical protection. The 5SJ4111-8HG42 model is specifically designed for the North American market, meeting stringent UL 489 requirements. This allows it to be used as a “branch circuit protector,” making it ideal for industrial machinery, control panels, and HVAC systems where safety and compliance are non-negotiable.
Key Benefit
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Global Compliance: Fully compliant with UL 489 and CSA C22.2, allowing for seamless use in North American industrial applications.
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High Inrush Handling: The D-Trip curve is perfect for inductive loads (like transformers or motors) where nuisance tripping must be avoided during startup.
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Space-Efficient: The compact 1-pole design (18mm width) saves valuable rail space in electrical cabinets.
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Enhanced Safety: Provides visible trip indication and secure terminal connections to prevent overheating.
Technical Function
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Overload Protection: Protects conductors against prolonged thermal overcurrent.
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Short-Circuit Protection: Instantaneous electromagnetic tripping at 10kA to prevent equipment damage.
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Disconnecting Means: Functions as a manual disconnect switch for circuit maintenance.
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| Weight | 0.171 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 | 2.5 W |
| operational current | – |
| ● at 30 °C / rated value | 5 A |
| ● at 40 °C / rated value | 5 A |
| ● at 45 °C / rated value | 4.9 A |
| ● at 50 °C / rated value | 4.8 A |
| ● at 55 °C / rated value | 4.6 A |
| ● at 60 °C / rated value | 4.5 A |
| ● at AC / rated value | 5 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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