Overview
The Siemens 3RT2045-1NP30 is a high-performance power contactor designed for heavy-duty industrial applications. Rated for AC-3e/AC-3 operation, it supports 80 A continuous current and can control motors up to 37 kW at 400 V. Its 3-pole design ensures reliable switching in three-phase systems, while the integrated varistor protects against voltage spikes. The contactor also comes with 1 NO + 1 NC auxiliary contacts for extended control options and a screw terminal for secure, easy installation.
Key Features & Function
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Rated Current: 80 A (AC-3)
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Motor Control Capacity: 37 kW at 400 V
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Poles: 3-pole design for reliable three-phase operation
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Control Voltage: 175–280 V AC/DC, 50/60 Hz
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Protection: Integrated varistor for surge protection
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Auxiliary Contacts: 1 NO + 1 NC for additional control
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Terminal Type: Screw terminals for secure connections
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Size: S3, compact design for flexible mounting
Benefit
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High Reliability: Supports demanding industrial motor applications with AC-3e/AC-3 rating.
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Enhanced Protection: Integrated varistor reduces the risk of damage from voltage spikes.
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Flexible Control Options: Auxiliary contacts allow for expanded functionality in control circuits.
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Easy Installation: Screw terminals provide secure and quick wiring.
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Durable Construction: Designed to withstand heavy-duty industrial environments.
Application
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Industrial motor control
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Conveyor systems
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HVAC and pumping systems
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Automation and control panels
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Machinery requiring reliable switching and surge protection
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