SIEMENS
High-performance, single-pole miniature circuit breaker (MCB) designed for branch circuit protection. Rated for 2A with a C-trip characteristic, it provides reliable overcurrent protection for inductive loads and is certified according to UL 489 standards for use in North American power systems up to 277V.
The Siemens 5SJ4 series is engineered for global applications, meeting both international and North American standards. The 5SJ4102-7HG42 is specifically designed for "Branch Circuit Protection," making it suitable for a wide range of industrial and commercial electrical panels. Its compact design allows for efficient rail mounting and space-saving in control cabinets.
Global Compliance: Fully compliant with UL 489 and CSA C22.2, allowing for use in equipment destined for the US and Canadian markets.
High Interrupting Capacity: Features a 10kA breaking capacity, ensuring safety even in high-fault current environments.
Ease of Installation: Standardized mounting and terminal design for quick integration into existing power distribution systems.
Durable Design: Built to withstand demanding industrial environments with a long electrical and mechanical service life.
Trip Characteristic C: Optimized for circuits with higher inrush currents, such as small motors or lighting groups.
1-Pole Configuration: Ideal for single-phase protection in 277V AC systems.
Terminal Safety: Includes touch-protection features to prevent accidental contact with live parts.
Visible Status: Clear toggle position indicators for immediate "ON/OFF" status identification.
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| SKU / Model | 5SJ4102-7HG42 |
|---|---|
| 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 | C |
| 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 | 1.8 W |
| operational current | - |
| ● at 30 °C / rated value | 2 A |
| ● at 40 °C / rated value | 2 A |
| ● at 45 °C / rated value | 1.9 A |
| ● at 50 °C / rated value | 1.9 A |
| ● at 55 °C / rated value | 1.8 A |
| ● at 60 °C / rated value | 1.8 A |
| ● at AC / rated value | 2 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 | - |
| Weight | 0.179 kg |
| Dimensions | 22.00 × 125.00 × 84.00 mm |
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