Title: Siemens SIRIUS 3RT1026-3B Power Contactor - 3-Pole, AC-3, 18.5kW, 24V DC, Size S0

Product Overview:
The Siemens SIRIUS 3RT1026-3B is a high-performance, 3-pole power contactor designed for reliable switching of AC motors and resistive loads in industrial automation and control applications. As part of the globally recognized SIRIUS modular system, this compact and robust contactor offers exceptional operational reliability and a long service life. Engineered for efficiency and ease of integration, the 3RT1026-3B is ideal for demanding environments where consistent performance and safety are paramount. Its precise switching capabilities and durable construction make it a cornerstone component for motor control circuits, ensuring seamless operation and reduced downtime in various industrial settings. This Siemens contactor is a testament to German engineering excellence, providing a dependable solution for your electrical switchgear needs.

Key Features & Benefits:

3-pole power contactor for switching three-phase AC loads
Rated operational current of 40 A at AC-3 (400V) for robust performance
Capable of switching motors up to 18.5 kW at 400V AC-3
Highly efficient 24 V DC control coil for low power consumption and reliable operation
Compact Size S0 design for space-saving installation in control cabinets and panels
Integrated 1 NO (normally open) and 1 NC (normally closed) auxiliary contacts for enhanced control and signaling
Screw terminals for secure and straightforward wiring, ensuring reliable electrical connections
High mechanical and electrical endurance for extended service life and reduced maintenance
Finger-safe terminals provide increased safety during installation and operation
Modular design allows for easy combination with other SIRIUS components like overload relays and auxiliary switches
Suitable for DIN rail mounting or direct screw mounting for flexible installation options
Complies with international standards including IEC, UL, and CSA for global applicability and safety assurance

Applications:

The Siemens SIRIUS 3RT1026-3B power contactor is widely used across various industrial and commercial applications requiring precise and reliable switching of electrical loads.
Motor control for pumps, fans, compressors, and conveyor systems
Switching of resistive loads such as heating elements and lighting circuits
Integration into industrial machinery and equipment for automated processes
HVAC systems for controlling large motors and ventilation units
Power distribution panels and control cabinets in manufacturing plants
Automation systems in factories, warehouses, and commercial buildings
Machine tools and processing equipment requiring frequent switching operations
Renewable energy systems for load management and control

Technical Specifications:

Part Number: 3RT1026-3B
Part Number (without special characters): 3RT10263B
Manufacturer: Siemens
Series: SIRIUS
Product Type: Power Contactor
Number of Poles: 3
Rated Operational Current (AC-3, 400V): 40 A
Rated Operational Power (AC-3, 400V): 18.5 kW
Control Coil Voltage: 24 V DC
Contactor Size: S0
Auxiliary Contacts (Built-in): 1 NO + 1 NC
Terminal Type: Screw terminals
Mounting Type: DIN rail / Screw mounting
Electrical Endurance: Approximately 10 million operating cycles
Mechanical Endurance: Approximately 30 million operating cycles
Ambient Operating Temperature: -25 to +60 °C
Storage Temperature: -50 to +80 °C
Degree of Protection: IP20 (terminals), IP00 (main circuit)
Standards Compliance: IEC 60947-4-1, EN 60947-4-1, VDE 0660-102, UL, CSA
Weight: 0.45 kg