PRODUCT DESCRIPTION
SIEMENS 3RT2028-1NB30 - Power Contactor
The SIEMENS 3RT2028-1NB30 is an electromechanical power contactor from the SIRIUS 3RT2 series, designed for switching and controlling three-phase AC motors and resistive loads in industrial automation applications. This device integrates into control panels for motor control centers, heating systems, and general load switching, providing reliable operational control through its 230 V AC coil and robust main contacts.
Technical Specifications:
- SERIES/FAMILY: SIRIUS 3RT2
- COMPONENT TYPE: Power Contactor
- MAIN CONTACT CONFIGURATION: 3-pole
- OPERATIONAL CURRENT (AC-3, 400V): 38 A
- OPERATIONAL POWER (AC-3, 400V): 18.5 kW
- RATED INSULATION VOLTAGE (Ui): 690 V
- RATED IMPULSE WITHSTAND VOLTAGE (Uimp): 6 kV
- COIL VOLTAGE: 230 V AC
- COIL FREQUENCY: 50/60 Hz
- AUXILIARY CONTACTS: 3 NO (Normally Open)
- FRAME SIZE: S0 (Size 0)
- TERMINATION TYPE: Screw terminals
- PROTECTION CLASS: IP20 (terminals)
- OPERATING TEMPERATURE RANGE: -25 to +60 degrees C
- COOLING: Natural convection
- MOUNTING STYLE: DIN rail 35mm / Screw mounting
- PRIMARY FUNCTION: Switching of three-phase AC motors
- SECONDARY FUNCTION: Switching of resistive loads, lighting, heating systems
- INTEGRATION: SIRIUS modular system components, industrial control panels, machinery automation