3RA2811-1CW10

The 3RA2811-1CW10 is an electronic time-delay relay with a two-wire connection, semiconductor output, screw terminals, a delay range of 0.05 to 100 seconds, and a net weight of approximately 0.10 kg. It is only compatible with SIRIUS 3RT201, 3RT202 (S00/S0) and 3RH2 auxiliary contactors.

Share To

Siemens 3RA2811-1CW10 Electronic Time-Limited Relay Power-On Delay

Product Positioning

The 3RA2811-1CW10 is an electronic time-delay relay from the Siemens SIRIUS 3RA28 series. It is a two-wire power-on delay relay with a semiconductor output design. It is only compatible with S00 and S0 type contactors and is commonly used for time-delay start requirements in small motor control circuits.

Core Product Advantages and Features

Power-on delay control

The signal is output only after a set delay following the application of control voltage, making it suitable for use as a start-up delay.

Two-wire connection

Only two wires are needed to complete the wiring, making the wiring method simpler than that of a typical time-delay relay.

Semiconductor output design

Replacing mechanical contacts with semiconductor element outputs makes it suitable for control circuits with frequent operations.

Specifically designed for S00/S0

The size and mounting hole positions are compatible with small 3RT201 and 3RT202 contactors, and they can be installed without additional processing.

project	Specification
Model (MLFB)	3RA2811-1CW10
Product Type	Electronic time-limited relay
Delay function	Power-on delay (two-wire type)
Output type	Semiconductor output
Terminal type	Screw terminals
Control power supply voltage	24…240V AC/DC, 50/60Hz
Delay setting range	0.05…100 seconds (minimum 0.05 seconds)
Applicable contactors	SIRIUS 3RT201, 3RT202 (S00/S0), 3RH2 auxiliary contactors
net weight	Approximately 0.10 kg
Additional features	Built-in surge suppressor (varistor)

Recommend

3RA2812-1DW10

The 3RA2812-1DW10 is an electronic time-delay relay with a power-off delay and requires an external control signal. It has a semiconductor output with screw terminals and a delay range of 0.05 to 100 seconds. It is only compatible with SIRIUS 3RT201, 3RT202 (S00/S0) and 3RH2 auxiliary contactors and has a built-in surge suppressor.

3RA2712-1AA00

This module is installed on the 3RT2 series contactor that supports communication. It replaces the traditional control circuit wiring with AS-Interface bus, making it suitable for direct start applications that require centralized monitoring and quick wiring, and can reduce panel space and labor costs.

3RA2711-1CA00

The IO-Link functional module is suitable for contactors of various sizes from S00 to S3. After installation, it can form a star-delta starter with digital communication capabilities, which is convenient for engineers to centrally monitor and troubleshoot from the PLC.