3RT2035-1AP60

What is this contactor used for?

This is a 3-pole power contactor designed for switching motors and other three-phase loads in industrial control panels. It is commonly used in motor starters, pump systems, compressors, conveyors and general machinery where reliable AC switching is required.

What coil voltage does it require?

The coil is rated for 220 V AC at 50 Hz and 240 V AC at 60 Hz. When selecting a replacement, the control voltage and frequency should match the application.

How many main and auxiliary contacts are included?

The unit has 3 main normally open poles for the power circuit, plus 1 normally open and 1 normally closed auxiliary contact built in for control and signalling duties.

What motor rating is it designed for?

It is rated at AC-3 40 A and 18.5 kW at 400 V, making it a strong choice for standard motor switching duties. Depending on system voltage, the power rating can differ, for example 11 kW at 230 V and 22 kW at 500 V or 690 V.

What type of terminals does it use?

This contactor uses screw terminals for the main circuit, auxiliary circuit and coil connections. That makes it suitable for conventional panel wiring where secure mechanical termination is preferred.

How is it mounted in a panel?

It can be mounted by screw fixing or snapped onto a 35 mm DIN rail. This gives flexibility for both new builds and replacement installations.

What are the overall dimensions?

The approximate dimensions are 114 mm high, 55 mm wide and 130 mm deep. This Siemens 3RT2035-1AP60 is in size S2, so it is important to allow adequate panel space around the device.

What cable sizes can be connected?

For the main contacts, it accepts solid or stranded conductors up to 1 x 50 mm² or 2 x 35 mm², depending on wiring arrangement. For finely stranded conductors with end treatment, it accepts up to 1 x 35 mm². Auxiliary contacts accept 0.5 to 2.5 mm² conductors.

What protection rating does the enclosure offer?

The front of the contactor is rated IP20, while the terminals are rated IP00. In practical terms, the front offers finger protection when installed correctly, but the terminals should be enclosed within a suitable panel.

What ambient conditions is it suited to?

It is intended for operation in ambient temperatures from -25 °C to +60 °C, with storage down to -55 °C and up to +80 °C. The maximum installation altitude is 2,000 m above sea level.

Can it be mounted side by side with other devices?

Yes. Side-by-side mounting is possible. As a guide, side spacing can be 0 mm, while clearance to the front, top and bottom should typically be allowed in line with the installation data.

What is the expected mechanical life?

The typical mechanical service life is up to 10,000,000 operating cycles. This makes it well suited to applications with frequent switching, provided the electrical duty remains within the rated limits.