Siemens 3RT2035-3KB40 Power Contactor 3P 41A 18.5kW 24VDC

The Siemens 3RT2035-3KB40 is a 3-pole SIRIUS power contactor for AC-3/AC-3e duty, rated 41 A and 18.5 kW at 400 V. It operates on a 24 V DC coil with a 0.8-1.2 Uc range and an integrated varistor for coil surge suppression. Frame size S2, with 1 NO + 1 NC auxiliary contacts, it is suited to direct PLC output control.

Technical specifications:

• MLFB: 3RT2035-3KB40
• Manufacturer: Siemens
• Product line: SIRIUS
• Product type: Power contactor - 3RT2, frame size S2
• Number of poles: 3
• Rated current (AC-3, 400 V): 41 A
• Rated current (AC-1, 400 V, 40°C): 60 A
• Rated current (AC-4, 400 V): 35 A
• Operating power (AC-3, 400 V): 18.5 kW
• Max operating voltage (AC-3/AC-3e): 690 V
• Control supply voltage: 24 V DC, 0.8-1.2 Uc
• Surge suppressor: integrated varistor
• Auxiliary contacts: 1 NO + 1 NC
• Main circuit terminals: screw terminal
• Control/auxiliary circuit terminals: spring-loaded terminal
• Insulation voltage: 690 V (pollution degree 3)
• Surge voltage resistance: 6 kV
• Ambient temperature (operation): -25...+60°C
• Installation altitude: max 2000 m
• Mechanical service life: 10,000,000 operating cycles
• Net weight: 1.11 kg

Features and benefits:

• Integrated varistor removes the need for an external coil surge suppressor
• Spring-loaded terminals on control and auxiliary circuits allow fast, tool-free wiring
• 24 V DC coil rated for direct PLC output switching within 0.8-1.2 Uc
• Wide operating temperature range of -25...+60°C for industrial environments
• 10,000,000 mechanical operating cycles for extended service life

Applications:

• Starting and switching 3-phase AC motors up to 18.5 kW at 400 V
• Motor control panels in machine building and plant automation
• AC-1 resistive load switching up to 60 A at 400 V
• PLC-controlled switchgear and automation systems

Compliant with EN 60947-1. Part of the Siemens SIRIUS 3RT2 range.

Also known as: Siemens 3RT2035-3KB40, SIRIUS 3RT2 power contactor 41A, Siemens contactor 18.5kW 24VDC.