Overview
The Siemens 3RH1981-1DA11 is a lateral auxiliary switch block designed for use with 3RT148 contactors. It extends the functionality of the main contactor by providing additional switching capabilities. This specific model features a 1 NO (Normally Open) and 1 NC (Normally Closed) contact configuration and utilizes screw terminals for secure and easy wiring. It's an essential component for industrial automation and control systems, allowing for the monitoring and control of various circuits.
Key Benefit
- Enhanced Functionality: Adds an extra layer of control and monitoring to your 3RT148 contactors.
- Reliable Performance: Manufactured by Siemens, a leader in industrial automation, ensuring high quality and durability.
- Easy Installation: Designed for simple, lateral mounting onto the contactor, saving time and effort during setup.
- Secure Connections: The screw terminals provide a robust and reliable electrical connection, minimizing the risk of faults.
- Space-Saving Design: Its compact, lateral design doesn't add significant bulk to the overall contactor assembly, making it ideal for tight spaces.
Application & Function
- Control Circuit Interlocking: Prevents simultaneous operation of two conflicting devices by using the auxiliary contacts to break the power circuit of the other device.
- Status Indication: The NO and NC contacts can be wired to indicator lights or signals to show the ON/OFF state of the main contactor.
- Signal Transmission: Used to send a signal to a PLC or another control device when the main contactor is actuated.
- Safety Circuits: Integral for safety applications where the state of the contactor needs to be monitored to ensure safe operation.
Technical Specification
- Product Number: 3RH1981-1DA11
- Contact Configuration: 1 NO + 1 NC
- Mounting: Lateral
- Connection Type: Screw Terminals
- Compatibility: Siemens 3RT148 Contactors
- Series: SIRIUS
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