Siemens 5SJ4220-7HG42 Circuit Breaker 10kA, 2-Pole, C, 20A UL 489-480Y/277V Original Brand New
$143.92
High-performance miniature circuit breaker (MCB) designed for demanding industrial applications. This 2-pole, 20A breaker features a Type C tripping characteristic and is fully compliant with UL 489 standards for 480Y/277V systems, providing reliable 10kA short-circuit protection.
Availability: In stock
Overview
The Siemens 5SJ4220-7HG42 is a high-performance circuit breaker designed for reliable protection in electrical systems. This 2-pole breaker has a 20A current rating and can handle a short-circuit capacity of up to 10kA, providing optimal protection for circuits. With compliance to UL 489 standards and rated for 480Y/277V applications, the Siemens 5SJ4220-7HG42 ensures safety, durability, and reliability in both residential and commercial electrical installations.
Key Features
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Current Rating: 20A
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Poles: 2-pole
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Short-Circuit Rating: 10kA
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Voltage Rating: 480Y/277V
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Compliance: UL 489
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Trip Curve: Type C, suitable for a wide range of applications.
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Industry Standard: Designed to meet industry standards for maximum safety.
Benefit
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Enhanced Safety: Protects electrical systems from overcurrents and short circuits.
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Durability: Siemens products are known for their long-lasting performance and reliability.
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Versatility: Ideal for use in both residential and commercial applications.
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Easy Installation: Designed for straightforward installation with standard connections.
Function
The Siemens 5SJ4220-7HG42 Circuit Breaker is designed to protect electrical circuits from damage caused by overcurrent or short circuit situations. When a fault is detected, the breaker will trip, disconnecting the circuit to prevent further damage to electrical components. This breaker is essential in maintaining the safety and integrity of electrical systems, particularly in industrial environments and commercial buildings.
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| Weight | 0.339 kg |
|---|---|
| Dimensions | 40.00 × 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 | 2 |
| 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 |
| type of voltage / of the operating voltage | AC/DC |
| 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 | 2.4 W |
| operational current | – |
| ● at 30 °C / rated value | 20 A |
| ● at 40 °C / rated value | 20 A |
| ● at 45 °C / rated value | 19.4 A |
| ● at 50 °C / rated value | 19 A |
| ● at 55 °C / rated value | 18.5 A |
| ● at 60 °C / rated value | 18 A |
| ● at AC / rated value | 20 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 | 2 |
| 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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