5SY4208-8 Siemens Miniature Circuit Breaker 400 V 10kA Original Brand New
€ 97.76
- 5SY4208-8
- Actuator Type:Toggle
- Alternate Mfr Part Number:5SY4208-8
- Approvals:UL 1077
- Characteristic:D Curve
- Current Rating:8 A
- Mounting Type:DIN Rail Mount
- Number of Poles:2 Pole
- Series:5SY Series
- Standards:UL 1077
- Termination:Screws
- Type:Thermal/Magnetic
- UPC Code:754554876009
- Voltage Rating:480 VAC
Availability: 234 in stock
Siemens Miniature Circuit Breaker 400 V 10kA – 5SY4208-8
MCBs from the Siemens SENTRON portfolio meet the enhanced requirements of automated buildings and industrial power supply systems, e.g. in the automotive and semiconductor industry or in data centers. Compared to residential and functional buildings, these are usually more extensive and complex in terms of both network topology and operation. Electricity and production downtimes must be deliberately prevented in these cases using coordinated device combinations if economic losses are to be avoided. Our MCBs protect wires and cables in cases of short circuit and overloads, and also enable backup protection for switching devices and also semiconductor protection. They are therefore a fundamental component in end-to-end protection concepts for industry and infrastructure.
The right combination
The main purpose of siemens miniature circuit breakers is to permanently monitor and secure cables and wires in electrical systems. They also help protect humans against electric shocks when used in combination with RCCBs or as combined RCBO. Combining the 5SY MCB with the 5SM6 arc-fault detection unit (AFDD) further expands the range of functions. An overview of all the combinations is provided below.
Strengths of the Siemens MCBs in the SENTRON portfolio – your benefits
- Convenient to install and connect
- Uniform additional components
- Consistent design
- Ergonomically formed devices
5SY42088
Siemens 5SY4208-8, Miniature circuit breaker 400 V 10kA, 2-pole, D, 8A, D=70 mm
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| Weight | 0.309 kg |
|---|---|
| Dimensions | 40.00 × 92.00 × 84.00 mm |
| Brand | SIEMENS |
| product brand name | SENTRON |
| product designation | Miniature circuit breaker |
| design of the product | For railway applications |
| number of poles | 2 |
| design of pole | 2P |
| tripping characteristic class | D |
| 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 | – |
| operating voltage / at DC / rated value / maximum | 72 V |
| protection class IP | IP20, with connected conductors |
| switching capacity current | – |
| ● acc. to EN 60898 / rated value | 10 kA |
| power loss [W] / for rated value of the current / at AC / in hot operating state / per pole | 0.8 W |
| operational current | – |
| ● at 35 °C / rated value | 8 A |
| ● at 40 °C / rated value | 7.35 A |
| ● at 45 °C / rated value | 7 A |
| ● at 50 °C / rated value | 6.63 A |
| ● at 55 °C / rated value | 6.25 A |
| ● at 60 °C / rated value | 5.83 A |
| ● at AC / rated value | 8 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 | No |
| ● halogen-free | Yes |
| ● sealable | Yes |
| ● silicon-free | Yes |
| product extension / installable / supplementary devices | Yes |
| connectable conductor cross-section / solid | – |
| connectable conductor cross-section / stranded | – |
| connectable conductor cross-section / finely stranded / with core end processing | – |
| 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 | 2 |
| 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 | 28 |
| reference code | – |
| ● acc. to DIN EN 61346-2 | F |
| ● acc. to IEC 81346-2 | F |
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