Siemens 5SY4320-7 Miniature Circuit Breaker, 3-Pole, 20A, 400V, 10kA, C-Characteristic D70mm Original Brand New
$43.88
High-performance 3-pole Miniature Circuit Breaker designed for 400V systems. Featuring a 20 A rated current and a robust 10 kA switching capacity with a Type C tripping characteristic. Its standardized design (70 mm installation depth) ensures easy integration into distribution boards.
Availability: In stock
Overview
The Siemens 5SY4320-7 is a premium 3-pole Miniature Circuit Breaker (MCB) from the trusted SENTRON portfolio, engineered for superior electrical system protection against short circuits and overloads. Rated for a maximum of 400 V operating voltage and a dependable 10 kA short-circuit breaking capacity, this device is the benchmark for safety in industrial and commercial environments. The robust design and 70 mm installation depth allow for seamless integration into standard DIN rail assemblies.
Key Benefit
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Unrivaled Safety: The high 10 kA breaking capacity guarantees reliable isolation of faults, minimizing damage to downstream equipment.
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Application Versatility (C-Curve): The Type C tripping characteristic is perfectly suited for general system protection and circuits with medium inrush currents (e.g., lighting circuits, small motor loads).
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Space & Time Saving: Features a compact design and simple terminal connections, speeding up installation and maximizing space within the panel.
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Global Standard: Built to the highest international standards, ensuring compliance and reliable operation worldwide.
Functions & Features
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3-pole miniature circuit breaker for multi-phase protection
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C-type characteristic suitable for general use in commercial and industrial circuits
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Rated current: 20A, Voltage: 400V
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Breaking capacity: 10kA
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Standard D70mm width for easy panel installation
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High mechanical and electrical durability
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| Weight | 0.476 kg |
|---|---|
| Dimensions | 58.00 × 94.00 × 84.00 mm |
| Brand | SIEMENS |
| product brand name | SENTRON |
| product designation | Miniature circuit breaker |
| number of poles | 3 |
| design of pole | 3P |
| tripping characteristic class | C |
| mechanical service life (switching cycles) / typical | 10 000 |
| overvoltage category | III |
| degree of pollution | 3 |
| type of voltage / of the operating voltage | AC |
| insulation voltage (Ui) | – |
| ● with single-phase operation / at AC / rated value | 440 V |
| ● with multi-phase operation / at AC / rated value | 440 V |
| supply voltage / with single-phase operation / at AC / rated value | 230 V |
| supply voltage | – |
| operating voltage / at DC / rated value / maximum | 72 V |
| protection class IP | IP20, with connected conductors |
| switching capacity current | – |
| ● at DC / acc. to IEC 60947-2 / rated value | 15 kA |
| ● acc. to EN 60898 / rated value | 10 kA |
| ● acc. to IEC 60947-2 / rated value | 20 kA |
| energy limitation class | 3 |
| power loss [W] / for rated value of the current / at AC / in hot operating state / per pole | 1.7 W |
| operational current | – |
| ● at 35 °C / rated value | 20 A |
| ● at 45 °C / rated value | 18.54 A |
| ● at 50 °C / rated value | 18.04 A |
| ● at 55 °C / rated value | 17.5 A |
| ● at 60 °C / rated value | 16.96 A |
| ● at AC / rated value | 20 A |
| suitability for operation | Mechanical engineering / industry |
| product component / neutral conductor switching | No |
| product feature / touch protection | Yes |
| product component | – |
| ● combined terminal top | Yes |
| ● combined terminal bottom | Yes |
| product feature | – |
| ● properties for main switches in accordance with EN 60204-1 | Yes |
| ● halogen-free | Yes |
| ● sealable | Yes |
| ● silicon-free | Yes |
| product extension / installable / supplementary devices | Yes |
| breaking capacity short-circuit current (Icn) | – |
| ● at AC / acc. to UL 1077 and CSA C22.2 No.235 | 5 kA |
| connectable conductor cross-section / solid | – |
| connectable conductor cross-section / stranded | – |
| connectable conductor cross-section / finely stranded / with core end processing | – |
| AWG number / as coded connectable conductor cross section | – |
| tightening torque [lbf·in] / with screw-type terminals | – |
| tightening torque / with screw-type terminals | – |
| position / of power supply cord | Any |
| installation depth | 70 mm |
| number of modular width units | 3 |
| fastening method | Quick assembly system |
| mounting position | any |
| influence of the surrounding temperature | max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C |
| vibration resistance / acc. to IEC 60068-2-6 | ±1mm at 5 to 25Hz; 50m/s² at 25 to 150Hz |
| ambient temperature / during operation | – |
| ambient temperature / during storage | – |
| ● minimum | -40 °C |
| ● maximum | 75 °C |
| number of test cycles / for environmental testing / acc. to IEC 60068-2-30 | 6 |
| reference code | – |
| ● acc. to DIN EN 61346-2 | F |
| ● acc. to IEC 81346-2 | F |
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