Product Overview: Siemens 3RT6015-1BB42 Power Contactor
When motor control demands reliable switching in a compact footprint, the 3RT6015-1BB42 from Siemens SIRIUS series delivers. This 3-pole contactor, size S00, is rated for AC-3e/AC-3 duty at 7 A and 3 kW / 400 V. Its 24 V DC coil ensures consistent operation in industrial control panels.
With a mechanical service life of 30 million operating cycles, this contactor reduces replacement frequency, lowering total cost of ownership. The screw terminals simplify wiring and maintenance, while the IP20 front protection enhances safety.
Key Features & Performance Metrics
- Rated operational current: 7 A at 400 V (AC-3/AC-3e), 18 A at AC-1.
- Rated operational power: 3 kW at 400 V, up to 4 kW at 690 V (AC-3).
- Control supply voltage: 24 V DC, operating range 0.8–1.1 × rated.
- Auxiliary contacts: 1 NC, screw terminal, rated 10 A AC-12.
- Insulation voltage: 690 V (main and auxiliary circuits).
- Surge voltage resistance: 6 kV (main and auxiliary circuits).
- Mechanical service life: 30,000,000 operating cycles typical.
- Ambient temperature: -25 to +60 °C operation, -55 to +80 °C storage.
The 24 V DC coil draws only 4 W closing and holding power, reducing energy consumption in continuously energized applications. This efficiency directly cuts operational costs over the contactor's lifespan.
Applications & Use Cases
This contactor suits motor starting and switching in conveyor systems, pumps, fans, and machine tools. In HVAC applications, the AC-3e rating ensures reliable switching of squirrel-cage motors. For lighting or resistive loads, the AC-1 rating of 18 A provides ample margin. Its compact S00 size allows high-density panel layouts, saving enclosure space and material costs.
Installation & Mounting
The 3RT6015-1BB42 mounts on a 35 mm DIN rail (DIN EN 60715) via snap-on, or with screws. It can be rotated ±180° on a vertical surface and tilted ±22.5° forward/backward. Side-by-side mounting requires zero side clearance, maximizing panel space. Maintain 10 mm clearance forward, upward, and downward for heat dissipation.
Maintenance & Reliability
Periodic inspection per the manufacturer's manual is recommended to verify contact wear and coil integrity. The contactor's mechanical endurance reduces unscheduled downtime, directly improving production efficiency. With a power loss of only 0.6 W at rated current (hot state), heat buildup is minimal, extending component life and reducing cooling requirements.
Compatibility & Integration
As part of the Siemens SIRIUS family, this contactor integrates with standard control systems. The 24 V DC coil is compatible with PLC outputs and industrial sensors. Screw terminals accept solid or stranded wires from 0.5 to 4 mm², ensuring flexible wiring. For auxiliary switching, the 1 NC contact handles up to 10 A, suitable for status feedback.
Cost-Benefit Analysis
Investing in the 3RT6015-1BB42 yields long-term savings. Its high mechanical life (30 million cycles) minimizes replacement costs. The low coil power (4 W) reduces energy bills in always-on applications. The compact size lowers enclosure costs, and the robust design cuts maintenance labor. Over a 20-year service life (as per safety data), the total cost of ownership remains competitive.
Product Support & Availability
The 3RT6015-1BB42 is available from AutoDCSTech. Contact our team for current lifecycle status and availability before ordering. We provide fast shipping and dedicated support for your industrial automation needs.
Availability & Condition at AutoDCSTech
| Part Number | 3RT6015-1BB42 |
|---|---|
| Availability | In Stock |
| Condition | New |
| Warranty | One Year |
| Origin | Germany |
