Overview
The Siemens 3RT1055-6SP36-3PA0 is a high-performance SIRIUS 3RT1 series power contactor designed for switching motors up to 75 kW (400 V) or 150 A (AC-3e/AC-3). This robust 3-pole contactor features an advanced electronic drive and is specifically engineered for safety applications, incorporating an F-PLC input for reliable connection to fail-safe controllers. It belongs to the modular SIRIUS system, ensuring seamless integration with other Siemens components.
Benefit
- Safety-Ready Integration: The integrated F-PLC input 24 V DC makes this contactor ideal for applications requiring functional safety, simplifying connection to fail-safe PLCs like Siemens SIMATIC F-CPUs.
- Versatile Control: The wide voltage range AC/DC 200-277 V electronic drive ensures reliable operation under varying supply conditions and reduces inventory complexity.
- High Power Capacity: Rated for switching motors up to 150 A or 75 kW, suitable for demanding industrial applications.
- Robust and Compact: Part of the SIRIUS modular system, offering a high degree of reliability and performance from a compact, space-saving design.
- Easy Main Wiring: Busbar connection for the main circuit simplifies high-current wiring and offers a secure, durable connection.
- Comprehensive Signaling: Permanently mounted 2 NO + 2 NC auxiliary contacts provide immediate and reliable feedback to the control system.
Function
The Siemens 3RT1055-6SP36-3PA0 power contactor serves as an electrically controlled switch used for remotely controlling electric power circuits, particularly for starting, stopping, and reversing three-phase motors. The electronic drive controls the coil, and the F-PLC input allows the device to be safely turned off by a safety controller (e.g., in an emergency stop circuit). The main contacts switch the high-power load, while the auxiliary contacts provide feedback or interlocking for the control system.
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