Siemens power contactor 3RT2 model parameter description

Overview of Siemens Power Contactor 3RT2

The connection system of the power contactor is connected to the main circuit busbar (with box terminal is optional), and the auxiliary and control circuit can choose screw terminal or spring terminal. Siemens contactor 3RT2 with screw terminal has models and specifications (size S00 to S3).

The power range parameters of 3RT2 contactor size S00 to S12 are as follows (switching motor contactor):

◆Size S00: 3RT201 up to 7.5kW;

◆Size S0: 3RT202 up to 18.5kW;

◆Size S2: 3RT203 up to 37kW;

◆Size S3: 3RT204 up to 55kW;

◆Size S6 to S12: 10 to 250kW.

Transmitter|Encoder|Soft starter|Power supply|VFD|Light curtain|Servo products|Human-machine interface|Solenoid valve|Cylinder|Actuator|Flow meter|Transformer|Thyristor|Sensor|Deceleration drive gearbox reducer|Linear guide|Circuit breaker|Refrigeration compressorAll industrial products of okplazas are purchased from the original factory or formal channels of agents to ensure the original authenticity, which perfectly solves the problem of industrial product sample procurement and small-batch procurement for the majority of engineers and purchasing personnel.

3RT2 Siemens power contactor can be used as a standard model with AC or DC operating mechanism, a model with a wide range of solid-state operating mechanism and universal drive voltage (AC or DC operation is possible), and DC coupling contactors with reduced power consumption are also very suitable Connect to the controller. The operating range is between 0.8 and 1.1*Us, and is usually controlled by the control power supply voltage connection A1-A2.

The 3RT2 power contactors with voltage taps in sizes S00 to S3 are a special version with SIRIUS 3RA27 function modules installed for connection to control systems via IO-Link or AS-Interface. Without functional modules, Siemens contactors can be used like the standard version.

Siemens power contactor 3RT2 model description

Transmitter|Encoder|Soft starter|Power supply|VFD|Light curtain|Servo products|Human-machine interface|Solenoid valve|Cylinder|Actuator|Flow meter|Transformer|Thyristor|Sensor|Deceleration drive gearbox reducer|Linear guide|Circuit breaker|Refrigeration compressorAll industrial products of okplazas are purchased from the original factory or formal channels of agents to ensure the original authenticity, which perfectly solves the problem of industrial product sample procurement and small-batch procurement for the majority of engineers and purchasing personnel.

Siemens power contactor 3RT2 basic parameters

◆Executive standards

IEC/EN 60947-1;

IEC/EN 60947-4-1;

IEC/EN 60947-5-1 (auxiliary switch).

◆Environmental conditions

If the equipment is used under environmental conditions that deviate from normal industrial conditions (IEC 60721-3-3 "Fixed use, affected by weather"), information about possible limitations on equipment reliability and durability and protective measures must be obtained.

Transmitter|Encoder|Soft starter|Power supply|VFD|Light curtain|Servo products|Human-machine interface|Solenoid valve|Cylinder|Actuator|Flow meter|Transformer|Thyristor|Sensor|Deceleration drive gearbox reducer|Linear guide|Circuit breaker|Refrigeration compressorAll industrial products of okplazas are purchased from the original factory or formal channels of agents to ensure the original authenticity, which perfectly solves the problem of industrial product sample procurement and small-batch procurement for the majority of engineers and purchasing personnel.

◆Supplement of auxiliary contacts

Size S00: The auxiliary contacts are integrated in the basic unit.

Size S0 to S3: The basic unit contains two integrated auxiliary contacts (1NO+1NC). Except for the coupling relays of S00 and S0, all basic units can be expanded with auxiliary switch blocks.

Size S6 to S12: These Siemens contactors are equipped with two laterally mounted auxiliary switch blocks. Auxiliary switches can be installed on the front and side (3RT12 vacuum contactor is an exception, here only the horizontal installation of auxiliary switches).

◆Contact reliability

If you want to switch voltage ≤110V and current ≤100mA, you should use the auxiliary contacts of the 3RT contactor or 3RH contactor relay, because they can ensure a high level of contact reliability. These auxiliary contacts are especially suitable for solid-state circuits with voltage ≥ 1mA and voltage of 17V or higher.

Siemens power contactor 3RT2 connection method

◆Main circuit

Size S00 and S0: Screw or spring type terminal, spring type terminal, device connector has a convenient plug-in design

Size S2 and S3: Screw terminal with box terminal. When the box terminal is removed, the cable connector of S3 can be used to connect directly to the connecting rod.

Size S6 to S12: Siemens contactors have screw terminals with connecting rods. Cable lugs or flexible or rigid busbars can be used to connect cables, or box terminals can be provided as accessories.

◆Auxiliary/Control Circuit

Size S00 to S12: Screw or spring type terminal.

Functional characteristics of Siemens power contactor 3RT2

◆Electromagnetic compatibility (EMC)

Siemens 3RT2 contactors meet the requirements of environmental category A. Note: When the contactor is used in an environment with a frequency converter, the configuration instructions in the manual must be followed.

◆Short circuit protection and motor protection

The 3RT2 contactor can be installed with 3RU2 thermal overload relay or 3RB3 electronic overload relay to prevent overload. In order to monitor and measure in the application, you can install 3RR2 monitoring relay on the 3RT2 contactor.

◆Surge suppression

The Siemens contactor provided without a coil circuit can be modified with RC components, varistors, diodes or diode components (components of diodes and Zener diodes for short disconnection time) to suppress open circuits in the coils surge.

Size S00: The surge suppressor is inserted in the front of the contactor, providing space for them beside the snap-in auxiliary switch block.

Size S0 and S3: The surge suppressor can be inserted on the front of the device. For contactors of size S3, the surge suppressor can only be used for device version E03.

Size S6 to S12: replaceable operating mechanism with integrated coil circuit (varistor).

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