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Siemens SIRIUS 3RT1025-1A

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3RT1025-1A

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The Siemens 3RT1025-1A is an IEC motor contactor designed within the SIRIUS product line. With a sturdy S0 frame size, this device allows for a rated operational current of 17A for AC-3 applications and up to 40A for AC-1 applications, suitable for various operational scenarios.

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Technical specifications for 3RT1025-1A

ManufacturerSiemens
Product TypeIEC Motor Contactor
Product LineSIRIUS
Part Number3RT1025-1A
Weight0.69 lbs (0.31 kg)
Frame SizeS0
Rated Operational Current (AC-3)17A
Rated Operational Current (AC-1)40A
Rated Voltage (AC Coil)Available in multiple AC voltages
Horsepower Rating (1-Phase, 115V)1 HP
Horsepower Rating (1-Phase, 230V)3 HP
Horsepower Rating (3-Phase, 200-230V)5 HP
Horsepower Rating (3-Phase, 460V)10 HP
Horsepower Rating (3-Phase, 575V)15 HP
Terminal TypeScrew Terminals
Mounting MethodDIN Rail 35mm
Overload Relay Compatibility3RU1126 (thermal) or 3RB2026 (solid-state)
Auxiliary Contacts (Standard)None (can be added separately)
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The 3RT1025-1A from Siemens represents an IEC motor contactor optimized for diverse applications. Known for its reliability and versatility, this contactor features a frame size of S0, making it compact yet robust. It is designed to handle a rated operational current of 17A under AC-3 conditions, while accommodating a higher operational current of up to 40A for AC-1. The contactor supports various rated voltages in the AC coil, allowing it to fit into multiple systems effortlessly.

The horsepower ratings for the 3RT1025-1A reflect its adaptability across different voltage levels. It provides 1 HP for single-phase operations at 115V, scaling to 3 HP at 230V. For three-phase connections, the contactor handles 5 HP at 200-230V, up to 10 HP at 460V, and a maximum of 15 HP at 575V. Terminal connectivity is facilitated via screw terminals, ensuring secure connections.

Installation is streamlined with a mounting method compatible with standard 35mm DIN rails, simplifying integration into a broader panel setup. This model is made to be paired with overload relays such as the 3RU1126 (thermal) or the 3RB2026 (solid-state), enabling users to enhance its protective capabilities. While standard auxiliary contacts are not present, they can be added separately depending on the user's requirements. The device's weight is approximately 0.35 kg, emphasizing its compact design without compromising performance.