Title: SIEMENS SIRIUS 3RT1035-1B Power Contactor - AC-3, 37kW, 80A, 24V AC Coil, Size S2

Product Overview:
The SIEMENS SIRIUS 3RT1035-1B is a high-performance, 3-pole power contactor designed for reliable switching of motors and resistive loads in industrial automation and control applications. As part of the renowned SIRIUS 3RT1 series, this robust contactor offers exceptional operational reliability and a long service life, making it an ideal choice for demanding environments. With an AC-3 rating of 80A at 400V and a powerful 37kW switching capacity, it is perfectly suited for starting, stopping, and reversing three-phase asynchronous motors. Its compact Size S2 design, coupled with a versatile 24V AC control coil, ensures seamless integration into existing control panels and systems, providing efficient and safe power management. Engineered for global standards, the 3RT1035-1B delivers consistent performance, contributing to optimized uptime and reduced maintenance in various industrial settings.

Key Features & Benefits:

3-pole power contactor for robust motor and load switching
High AC-3 operational current rating of 80A at 400V
Impressive AC-3 operational power rating of 37kW at 400V
Efficient 24V AC control coil for versatile system integration
Compact Size S2 design for space-saving installation in control cabinets
Integrated 1 NO + 1 NC auxiliary contacts for enhanced control and feedback
Screw terminals for secure and straightforward wiring connections
High electrical and mechanical endurance for extended operational life
Suitable for high switching frequencies in demanding applications
Easy snap-on mounting on DIN rails or direct screw mounting
Robust construction ensures reliable performance in harsh industrial environments
Compliance with international standards (IEC, UL, CSA) for global applicability
Optimized for energy efficiency in motor control applications
Part of the comprehensive Siemens SIRIUS modular system for easy expansion

Applications:

The SIEMENS 3RT1035-1B contactor is widely utilized across various industrial sectors for critical power switching functions. Its primary applications include:
Starting, stopping, and reversing three-phase asynchronous motors
Control of pumps, fans, compressors, and conveyor systems
Switching of heating elements and other resistive loads
Integration into machine tools and industrial machinery
Automation systems for process control and material handling
HVAC systems for large commercial and industrial buildings
Power distribution in electrical switchgear assemblies
Lighting control for large-scale industrial and public facilities
Emergency stop circuits and safety interlocks in machinery

Technical Specifications:

Part Number: 3RT1035-1B
Alternate Part Number: 3RT10351B
Product Type: Power Contactor
Series: Siemens SIRIUS 3RT1
Number of Poles: 3
Rated Operational Current (AC-3, 400V): 80 A
Rated Operational Power (AC-3, 400V): 37 kW
Control Coil Voltage: 24 V AC, 50/60 Hz
Auxiliary Contacts: 1 NO (Normally Open) + 1 NC (Normally Closed)
Size: S2
Mounting Type: DIN rail / Screw mounting
Terminal Type: Screw terminals
Operating Temperature Range: -25 to +60 °C
Electrical Endurance: Up to 10 million switching operations
Mechanical Endurance: Up to 30 million switching operations
Standards Compliance: IEC 60947, EN 60947, VDE 0660, UL, CSA
Protection Class (Terminals): IP20
Weight: 0.85 kg