The Siemens 3RT2046-1AL208K is a high-performance SIRIUS 3RT2 Series power contactor designed for reliable motor switching and industrial automation applications. Engineered for AC-3e/AC-3 duty, this 3-pole contactor is rated at 95A and supports motor loads up to 45kW at 400V, making it ideal for pumps, compressors, conveyors, fans, HVAC systems, and heavy-duty industrial machinery.
Equipped with a 230V AC, 50/60Hz operating coil (Variant AL208K), the contactor ensures dependable switching performance in demanding industrial environments. The device features 3 Normally Open (3NO) main contacts and 1 Normally Open (1NO) + 1 Normally Closed (1NC) auxiliary contacts, enabling efficient control, signaling, monitoring, and interlocking functions without additional accessories.
The AL208K coil variant incorporates an integrated suppression module that helps reduce switching transients and protects sensitive control electronics from voltage spikes. This improves system reliability, minimizes electromagnetic interference, and extends the operational life of connected automation equipment.
Built in the rugged S3 frame size, the 3RT2046-1AL208K uses durable screw terminal connections for secure conductor termination, simplified installation, and easy maintenance. Its robust design makes it suitable for motor control centers (MCCs), industrial control panels, OEM machinery, process automation systems, and manufacturing facilities.
Manufactured according to Siemens SIRIUS quality standards, the contactor offers a rated insulation voltage of 1000V, surge voltage resistance up to 8kV, and a mechanical service life of up to 10 million operating cycles. It is designed to operate reliably in ambient temperatures ranging from -25°C to +60°C, ensuring long-term performance in challenging industrial conditions.
As part of the trusted Siemens SIRIUS 3RT2 contactor family, the 3RT2046-1AL208K delivers dependable motor control, high switching capacity, and seamless compatibility with Siemens overload relays, motor starters, auxiliary contact blocks, and industrial automation systems.
| Specification | Details |
|---|---|
| Product Name | Power Contactor |
| Brand | Siemens |
| Series | SIRIUS 3RT2 |
| Model Number | 3RT2046-1AL208K |
| SKU | 3RT2046-1AL208K |
| Product Type | Power Contactor |
| Utilization Category | AC-3e / 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 | AL208K |
| Frame Size | S3 |
| Terminal Type | Screw Terminals |
| Rated Insulation Voltage (Ui) | 1000 V |
| Surge Voltage Resistance | 8 kV |
| Mechanical Life | Up to 10 Million Operations |
| Operating Temperature | -25°C to +60°C |
| Mounting Type | Panel Mount |
| Weight | Approx. 1.7 kg |
| Application | Motor Control & Industrial Switching |
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