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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RT2035-1AL20 |
| Alternative Part Number | 3RT20351AL20 |
| Manufacturer | Siemens |
| Product Type | Contactor |
| Size | S2 |
| Number of Poles | 3 |
| Operating Voltage | Up to 690 V AC at AC-3 |
| Operating Current at AC-3 | 40 A at 400 V |
| Operating Current at AC-1 | 60 A at 400 V (40 °C ambient temperature) |
| Insulation Voltage | Rated at 690 V |
| Degree of Pollution | 3 |
| Surge Voltage Resistance | Rated value 6 kV |
| Protection Class IP | IP20 on the front, IP00 of the terminal |
| Installation Altitude | Maximum 2,000 m above sea level |
| Ambient Temperature | Operating: -25 to +60 °C, Storage: -55 to +80 °C |
| Mechanical Service Life | Typical 10,000,000 switching cycles for contactor |
| Auxiliary Switch | Yes |
| Mounting Type | Screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 60715 |
| Height | 114 mm |
| Width | 55 mm |
| Depth | 130 mm |
| Required Spacing | For side-by-side mounting: 0 mm at the side, 10 mm forwards/upwards/downwards |
| Electrical Connection | Screw-type terminals for main, auxiliary, and control current circuits |
| Conductor Cross-Section | Main contacts: 1 ... 35 mm² finely stranded with core end processing |
| Auxiliary Contacts | 0.5 ... 2.5 mm² single or multi-stranded |
| Safety Related Data | B10 value with high demand rate acc. to SN 31920: 1,000,000 |
| Mirror Contact | According to IEC 60947-4-1 |
| T1 Value for Service Life | 20 years according to IEC 61508 |
The Siemens 3RT2035-1AL20 is a robust power contactor designed to handle high switching frequencies and demanding operational conditions. This contactor is part of the SIRIUS product family, renowned for its reliability and efficiency in industrial applications. With a size S2 frame, the 3RT2035-1AL20 is equipped with three poles and offers an AC-3 rating of 40 A, making it capable of managing 18.5 kW at 400 V. It also features one normally open (NO) and one normally closed (NC) auxiliary contact, providing flexibility for various control circuit arrangements.
Constructed with a 230 V AC control supply voltage, this contactor ensures compatibility with standard industrial power supplies. The device boasts a mechanical service life of up to 10 million switching cycles, highlighting its durability and long-term performance. The contactor's front has an IP20 protection class, safeguarding against solid objects, while the terminal protection is rated at IP00.
The Siemens 3RT2035-1AL20 is designed for straightforward installation, with options for screw and snap-on mounting onto a 35 mm standard mounting rail according to DIN EN 60715. Its compact dimensions allow for efficient use of space inside control cabinets, and it supports side-by-side mounting without the need for additional spacing, maximising panel real estate.
This contactor is suitable for a wide range of industrial applications, including motor control, heating, lighting, and capacitor switching. Its design ensures minimal power loss, contributing to energy-efficient operations. The 3RT2035-1AL20 is a testament to Siemens' commitment to quality and performance in industrial control components.
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Frequently Asked Questions
What type of contactor is this?
This is a power contactor designed for switching an electrical power circuit, typically used in applications with AC-3 40 A, and capable of handling 18.5 kW at 400 V.
Can this contactor be mounted on a DIN rail?
Yes, it can be mounted on a 35 mm standard mounting rail according to DIN EN 60715 with both screw and snap-on mounting options available.
What is the coil voltage for this contactor?
The coil voltage for this contactor is rated at 230 V AC at both 50 and 60 Hz.
What are the dimensions of this contactor?
The dimensions are 114 mm in height, 55 mm in width, and 130 mm in depth.
What is the IP rating of the front of the contactor?
The front of the contactor has an IP20 protection class rating.
What is the mechanical service life of the contactor?
The mechanical service life of the contactor is typically 10 million switching cycles.
How many auxiliary contacts does this contactor have?
This contactor comes with 1 Normally Closed (NC) and 1 Normally Open (NO) auxiliary contact.
What is the operating temperature range for this contactor?
The operating temperature range is from -25°C to +60°C.
Can this contactor be used for three-phase AC motors?
Yes, it is suitable for use with three-phase AC motors and has a full-load current (FLA) rating for three-phase AC motors at 480 V and 600 V.
What type of terminals does this contactor have for electrical connections?
It features screw-type terminals for both the main current circuit and the auxiliary and control current circuit.
