Siemens SIRIUS 3RT7035-1AL20 Power Contactor AC-3 40A / 18.5kW, 230V AC Coil, 3-Pole, Size S2, Screw Terminal Orginal Brand New

Overview

The Siemens SIRIUS 3RT7035-1AL20 is a high-performance power contactor designed for reliable switching of motors and electrical loads up to 18.5 kW. Part of the trusted SIRIUS family, this 3-pole contactor is built for demanding industrial applications, offering exceptional durability and operational safety. With its robust Size S2 frame and convenient screw terminals, installation is straightforward, making it an ideal choice for a wide range of control and automation tasks.

Key Features & Specification

• Product Number: 3RT7035-1AL20
• Product Type: Power Contactor
• Application: Switching motors (AC-3) and resistive loads
• Rated Operational Current (AC-3): 40A at 400V
• Rated Operational Power (AC-3): 18.5 kW at 400V
• Control Supply Voltage: 230V AC, 50/60 Hz
• Number of Poles: 3-pole
• Frame Size: S2
• Termination Type: Screw terminals for secure and reliable wiring
• Mounting: DIN rail or screw mounting
• Auxiliary Contacts: (If applicable, mention standard configuration, e.g., “1 Normally Open (NO) + 1 Normally Closed (NC)” – check datasheet for accuracy)
• Compliance: Designed to meet international standards such as IEC, UL, and CSA.
• Series: SIRIUS
• Manufacturer: Siemens

Benefit

• Reliability: Engineered by Siemens, a global leader in industrial automation, for long-lasting, dependable performance in harsh industrial environments.
• Efficiency: The contactor’s design ensures low power consumption and high switching capacity, contributing to energy efficiency.
• Ease of Installation: Standardized Size S2 and universal screw terminals simplify wiring and integration into existing control panels.
• Safety: Built-in safety features and robust construction protect equipment and personnel from electrical faults.
• Versatility: Suitable for a wide range of motor control applications, including pumps, fans, compressors, and conveyors.

Function

The Siemens 3RT7035-1AL20 contactor is an electromechanical switch. When the 230V AC control coil is energized, it generates a magnetic field that pulls the main contacts together. This action closes the circuit, allowing power to flow from the supply to the connected motor or load. When the coil is de-energized, a spring mechanism separates the contacts, breaking the circuit and stopping the flow of power. This precise and repeatable switching action is fundamental to automated control systems.

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