The Siemens 3RT2015-1BB428K is a SIRIUS 3RT2 series 3-pole power contactor designed for reliable motor switching and industrial load control. It features mirror contact elements, screw terminal connections, and a 24 V DC control coil, making it suitable for use in motor control centers (MCCs), automation systems, HVAC applications, machinery, and industrial power distribution systems.
This model belongs to the compact S00 frame size and is typically rated for AC-3 duty up to 7 A, with a motor capacity of approximately 3 kW at 400 V AC, depending on application conditions. It is widely used in light-duty three-phase motor control and switching applications in industrial environments.
The integrated mirror contact elements provide reliable feedback of the main contact position. This is important for PLC interlocking, safety circuits, and monitoring systems where accurate ON/OFF status indication is required for safe operation and system diagnostics.
With robust screw terminals, the 3RT2015-1BB428K ensures secure wiring, vibration resistance, and easy installation inside control panels, supporting long-term reliability in demanding industrial conditions.
• Genuine Siemens SIRIUS 3RT2 power contactor
• Model: 3RT2015-1BB428K
• 3-pole motor switching contactor
• Rated AC-3 current: ~7 A
• Motor rating: ~3 kW at 400 V AC
• Control coil: 24 V DC variant
• Mirror contact elements for status feedback and safety circuits
• Screw terminal connection system
• Compact S00 frame size
• High electrical endurance and reliable switching
• Suitable for industrial automation and MCC panels
• Compatible with Siemens SIRIUS modular accessories
| Parameter | Specification |
|---|---|
| Product Series | Siemens SIRIUS 3RT2 |
| Model Number | 3RT2015-1BB428K |
| Product Type | Power Contactor |
| Contactor Configuration | 3 Pole |
| Rated Current (AC-3) | ~7 A |
| Motor Rating | ~3 kW @ 400 V AC |
| Coil Type | 24 V DC Control Coil |
| Contact Feedback | Mirror Contact Elements |
| Terminal Type | Screw Terminals |
| Frame Size | S00 |
| Application | Motor Control & Power Switching |
| Brand | Siemens |
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