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Siemens SIRIUS 3RT1056-6NP38-0PA5

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3RT1056-6NP38-0PA5

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The Siemens 3RT1056-6NP38-0PA5 is a power contactor with a robust design intended for effective switching in electrical applications. Operating at a maximum voltage of 1,000 V and a current of 185 A at 400 V AC, it supports significant power ratings up to 90 kW.

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Technical specifications for 3RT1056-6NP38-0PA5

ManufacturerSiemens
Product TypePower Contactor
Product LineSIRIUS
Part Number3RT1056-6NP38-0PA5
UPC754554825151
Weight3.00 lbs (1.36 kg)
Contactor Frame SizeS6
Maximum Operating Voltage (AC-3)1,000 V
Operational Current Rating (AC-3, 400 V)185 A
Power Rating (AC-3, 400 V)90 kW
Configuration of Auxiliary Contacts2 normally open + 2 normally closed
Voltage Range for Control Supply200–277 V AC/DC
Connection Type for Main CircuitBusbar
Connection Type for Auxiliary CircuitScrew terminal
Surge Voltage Capacity (Main Circuit)8 kV
Insulation Voltage Rating (Main Circuit)1,000 V
Mechanical Lifespan10 million cycles
Power Dissipation (Per Pole)13 W
Frequency Range50–60 Hz
Mounting MethodScrew fastening, side-by-side configuration
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The Siemens 3RT1056-6NP38-0PA5 power contactor is engineered for reliability in high-demand environments. Rated for a maximum operational voltage of 1,000 V, this contactor achieves an impressive current rating of 185 A at 400 V under AC-3 conditions. It provides substantial power delivery capabilities, boasting a power rating of up to 90 kW.

With an arrangement of auxiliary contacts, the configuration includes two normally open contacts and two normally closed contacts, providing versatility for various switching applications. The control supply voltage operates within a range of 200 to 277 V AC/DC, ensuring compatibility with diverse systems. The main circuit employs a busbar connection type while auxiliary circuits utilize screw terminals for secure connections.

Designed to withstand surges, the contactor has a surge voltage capacity of 8 kV in the main circuit. Its insulation voltage rating also stands at 1,000 V, reinforcing its capabilities. The mechanical lifespan of this unit is rated for up to 10 million cycles, indicating durability over prolonged usage.

Power dissipation per pole is rated at 13 W, and the contactor operates efficiently within a frequency range of 50 to 60 Hz. For installation, the contactor features a screw fastening mechanism, allowing for side-by-side configurations, which optimizes space while maintaining functionality.