3RT1446-1AL20 - Siemens Sirius 3-Pole 140A 400V AC Contactor Size S3

3RT1446-1AL20

3RT1446-1AL20 is a Siemens Sirius AC contactor rated for 140 amperes at 400 volts, designed for general-purpose motor control and switching applications. This 3-pole contactor features a compact Size S3 frame with screw terminal connections, suitable for industrial automation and power distribution systems. The unit operates on 230V AC control supply at both 50 Hz and 60 Hz frequencies, with an operating range factor of 0.8 to 1.1 times the rated coil voltage. Mechanical service life extends to 3 million switching cycles under normal operating conditions. The contactor provides reliable contact performance with a contact reliability specification of 1 faulty switching per 100 million operations at 17V, 1mA. Mounting options include both screw and snap-on installation onto 35mm and 75mm standard DIN rails. The device measures 70mm wide, 146mm high, and 139mm deep, with a weight of approximately 4 pounds. Protection class rating is IP20 on the front with optional cover or box terminal.

• Rated Current: 140A at AC-1 / 400V
• Control Supply Voltage: 230V AC, 50/60 Hz
• Poles: 3-pole configuration
• Frame Size: S3
• Connection Type: Screw terminal
• Mounting: DIN rail (35mm and 75mm)
• No-load Switching Frequency: 5,000 per hour
• Operating Frequency AC-1: 650 per hour maximum
• Mechanical Service Life: 3 million cycles
• Protection Class: IP20
• Dimensions: 70mm W x 146mm H x 139mm D

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Specifications

• Part Number: 3RT1446-1AL20
• Manufacturer : Siemens
• Brand : Siemens
• Category : Motor Control
• Item Subcategory : Contactor
• Family : Sirius
• Type : 3RT14
• Voltage : 600
• Amperage : 140
• Phase : 3
• Poles : 3
• Coil Voltage Maximum : 230

Product Data

• UPC : 754554902074
• GTIN : 00754554902074
• Weight : 4