The Siemens control relay and auxiliary contactor is designed for industrial automation and control systems, providing reliable switching of control signals in electrical switchgear. This unit features 4 normally open (4NO) and 4 normally closed (4NC) contacts, operating with a 24V DC coil voltage. It utilizes screw terminals and belongs to the S00 frame size, offering a compact design with standard-compliant terminal designations and time-saving connection technology. Suitable for applications requiring the multiplication of outputs, this control relay allows the simultaneous switching of several auxiliary circuits.
Advantages
The Siemens control relay features a durable 4-pole basic design that can be extended up to 8 poles using snap-on auxiliary switches. All contacts are available with positively driven operation for safety applications. The device is climate-resistant, offers high contact reliability, and supports global usage through standard approvals such as IEC and UL/CSA. Furthermore, it shares compatibility with the extensive range of accessories designed for Siemens S00 to S3 series contactors.
Suitable for
- Switching control circuits and control signals in industrial automation
- Signaling and interlocking applications in electrical switchgear
- Safety applications utilizing positively driven operation contacts
- Simultaneous switching of multiple auxiliary circuits through output multiplication
When it may not be suitable
This control relay may not be suitable for applications requiring AC coil voltage, as this specific model operates exclusively on 24V DC. Additionally, it is designed for auxiliary and control circuits rather than powering heavy-load main motors directly.
Key specifications
- 4 normally open (4NO) and 4 normally closed (4NC) contacts
- 24V DC coil voltage
- Screw terminal connection technology
- Frame size S00
- Height: 57.5 mm, Package width: 50 mm, Package depth: 61.5 mm
- Climate-resistant construction
How to use
Mount the control relay securely onto a standard mounting rail within the electrical switchgear panel. Connect the 24V DC power supply to the coil terminals using appropriate wiring and secure the screw connections firmly. Wire the control and auxiliary circuits to the designated 4NO and 4NC terminals according to your circuit diagram. Ensure all connections comply with standard electrical installation guidelines before energizing the control system.
What to consider before purchase
- Verify that your control system requires a 24V DC coil voltage
- Confirm that the contact configuration of 4NO and 4NC meets your circuit requirements
- Check that space within the switchgear panel accommodates the S00 frame size dimensions
- Ensure compatibility with existing snap-on auxiliary switches or accessories if expansion is planned
Always disconnect the main power supply before installing, servicing, or modifying the control relay and associated wiring. Ensure that installation is performed by qualified personnel in accordance with local electrical regulations and manufacturer specifications.
