The Siemens 3RT2046-1AL20 is a robust and high-performance SIRIUS 3RT2 Series power contactor designed for demanding motor control and industrial automation applications. Built for AC-3 duty, this 3-pole contactor is rated for 95A operational current and supports three-phase motors up to 45kW at 400V, making it suitable for pumps, compressors, conveyors, fans, HVAC systems, machine tools, and heavy-duty industrial equipment.
Equipped with a 230V AC, 50/60Hz operating coil (Variant AL20), the 3RT2046-1AL20 provides dependable switching performance and long-term operational reliability. The contactor features 3 Normally Open (3NO) main contacts and 1 Normally Open (1NO) + 1 Normally Closed (1NC) integrated auxiliary contacts, enabling efficient motor control, signaling, monitoring, and interlocking functions within industrial control systems.
Manufactured in the rugged S3 frame size, the contactor utilizes durable screw terminal connections that ensure secure wiring, simplified installation, and easy maintenance. Its compact yet powerful design makes it ideal for motor control centers (MCCs), industrial switchboards, process automation systems, OEM machinery, and manufacturing facilities.
Designed according to Siemens SIRIUS quality standards, the 3RT2046-1AL20 offers a rated insulation voltage of up to 1000V, excellent electrical endurance, and a mechanical service life of up to 10 million operating cycles. These features help reduce maintenance requirements and ensure reliable operation even in demanding industrial environments.
The integrated 1NO + 1NC auxiliary contacts eliminate the need for additional auxiliary modules in many applications, helping optimize panel space and reduce installation costs. The contactor is also fully compatible with Siemens overload relays, motor starters, surge suppressors, and auxiliary contact blocks, allowing flexible system expansion and customization.
As part of the trusted Siemens SIRIUS 3RT2 contactor family, the 3RT2046-1AL20 delivers reliable motor switching, high operational efficiency, and seamless integration into modern industrial automation systems.
| Specification | Details |
|---|---|
| Product Name | Power Contactor |
| Brand | Siemens |
| Series | SIRIUS 3RT2 |
| Model Number | 3RT2046-1AL20 |
| SKU | 3RT2046-1AL20 |
| Product Type | Power Contactor |
| Utilization Category | AC-3 |
| Rated Operational Current (AC-3) | 95 A |
| Motor Rating at 400V | 45 kW |
| Number of Poles | 3 Pole |
| Main Contacts | 3 NO |
| Auxiliary Contacts | 1 NO + 1 NC |
| Coil Voltage | 230 V AC |
| Coil Frequency | 50/60 Hz |
| Coil Variant | AL20 |
| Frame Size | S3 |
| Terminal Type | Screw Terminals |
| Rated Insulation Voltage (Ui) | 1000 V |
| Protection Class | IP20 |
| Mechanical Life | Up to 10 Million Operations |
| Mounting Type | Panel Mount |
| Operating Temperature | -25°C to +60°C |
| Application | Motor Control & Industrial Switching |
| Product Family | Siemens SIRIUS Contactors |
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