Siemens Power contactor, 3-pole, 30kW, 65A 175-280 V AC/DC Part number 3RT2037-1NP30

Product Overview

The Siemens 3RT2037-1NP30 is a SIRIUS 3RT2 series power contactor (size S2) with a 3-pole main circuit design, rated at 65 A and capable of switching up to 30 kW at 400 V. It features a 175-280 V AC/DC control coil with integrated varistor, and comes equipped with 1 normally open (NO) + 1 normally closed (NC) auxiliary contact, making it suitable for demanding motor and power switching applications.

Key Features

• 3-pole power contactor for mains switching
• Main current rating: 65 A
• Power switching capability: 30 kW @ 400 V (AC-3)
• Control coil voltage: 175-280 V AC/DC
• Integrated varistor for surge‐suppression protection
• Auxiliary contact set: 1 NO + 1 NC included
• Screw terminal design for reliable connections
• Size class: S2 (SIRIUS 3RT2) for mid-range power switching

Technical Specifications

• Product Series: SIRIUS 3RT2
• Article Number: 3RT2037-1NP30
• Main Circuit Poles: 3
• Rated Current (AC-3 at 400 V): 65 A
• Rated Power (AC-3 at 400 V): 30 kW
• Control Coil Voltage: 175-280 V AC/DC
• Auxiliary Contacts: 1 NO + 1 NC
• Connection Type: Screw terminals
• Size Class: S2

Compliance & Certifications

• Manufactured to Siemens automation and power-switching standards
• Designed for industrial motor-control and power distribution use
• Included surge suppression varistor helps meet applicable EMC and surge tolerance requirements

Applications

Ideal for switching and controlling motors, feeders and industrial loads up to 30 kW in size, within machine-building, manufacturing, HVAC and process control environments. Suitable where a robust 3-pole contactor with auxiliary signal contacts and surge protection is required in compact yet powerful format.