Siemens 3RT2026-1AP04 Power Contactor, 3-Pole, 11kW/400V, 25A, 230V AC Coil

The Siemens 3RT2026-1AP04 is a robust 3-pole power contactor engineered for the reliable switching of electrical loads in industrial and commercial applications. Designed with an S0 frame size, this contactor provides a power rating of 11kW at 400V and a rated operational current of 25A. It is equipped with a 230V AC control coil and includes 2 normally open and 2 normally closed auxiliary contacts, making it a versatile component for complex automation and motor control systems.

Advantages

This power contactor stands out due to its high operational reliability and durability in demanding electrical environments. The compact S0 design allows for efficient space utilization within control cabinets, while the integrated auxiliary contacts simplify the wiring process for feedback and interlocking circuits. Its standardized construction ensures compatibility with a wide range of industrial equipment, providing consistent performance and long service life under standard operating conditions.

Suitable for

• Industrial motor control systems
• Automation and control panels
• Switching resistive and inductive loads
• Heating and lighting control circuits

This device may not be suitable for applications requiring DC control voltages, as it is specifically designed for a 230V AC coil. It is also not intended for use in environments exceeding its specified IP protection rating or in extreme conditions that fall outside the manufacturer's defined technical parameters for temperature and humidity.

Key specifications

• Number of poles: 3
• Operational power: 11kW at 400V
• Operational current: 25A
• Control coil voltage: 230V AC
• Auxiliary contacts: 2NO + 2NC
• Size: S0

To use the contactor, mount it securely onto a standard DIN rail or a flat surface within a control enclosure. Connect the main power lines to the primary terminals and wire the 230V AC control signal to the coil terminals. Ensure that all connections are tightened to the specified torque to prevent overheating. Integrate the auxiliary contacts into your control logic as required for monitoring or safety interlocking functions.

What to consider before purchase

• Verify that your control circuit provides 230V AC voltage.
• Ensure the 25A current rating is sufficient for your specific load.
• Check available space in your control cabinet for the S0 size unit.
• Confirm that the 2NO+2NC auxiliary contact configuration meets your control requirements.

Always ensure that the power supply is disconnected before performing any installation or maintenance work on the contactor to prevent electrical hazards. Regularly inspect terminal connections for tightness and signs of wear to maintain optimal performance.