Siemens SIRIUS Innovation 3RT2 Contactor, 230 V ac Coil, 3 Pole, 9 A, 4 kW, 3NO

The 3RT2 contactors are climate-proof and are suitable and tested for use worldwide, sizes S00 to S2, up to 37 kW

Size S00, up to 7.5 kW
Size S0, up to 18.5 kW
Size S2, up to 37 kW
Screw connection / Spring Clamp
Impulse voltage resistance 6 kV
Insulation voltage 690 V
Real loss power only 4 W
Designation K according to DIN 40719 (extendable to IEC 204-2) & IEC 750; Q according to DIN EN 61346-2

Screw terminals can only be used with screw terminal overloads and spring terminals can only be used with spring terminal overloads.

CE, UL, CSA, CCC

This robust contactor from Siemens' SIRIUS Innovation range provides a simple switching and protection solution for high-power loads in industrial environments. It works by making or breaking a power circuit, so you can use it as a motor starter. Thanks to thermoplastic housing, this is a durable and impact-resistant choice that won't break under pressure. With a wide operating temperature range of between -25°C and +60°C, you can rely on the unit to work effectively in harsh environments. It comes complete with a 10A fuse to prevent electric shock from short circuits.

• Power rating of 4kW makes it suitable for heavy-duty industrial applications
• 6kV surge rating to handle sudden voltage spikes and ensure electrical safety
• Standard snap-on DIN rail mounting saves on installation time
• IP20 (ingress protection) rating for resistance to dust and objects larger than 12mm in size

The main difference between a contactor and a relay is that a contactor is typically intended for 3-phase circuits while a relay is used with single-phase circuits.