🔹 Auxiliary Contactor Relay – Siemens 3TH30220AR0 (3TH Series)
The Siemens 3TH30220AR0 is an auxiliary contactor relay from the 3TH series, designed for control, signaling, and interlocking functions in industrial electrical systems. It is widely used in control panels and automation systems to extend auxiliary contacts of main contactors and ensure reliable operation of control circuits.
This relay is suitable for PLC-based automation, MCC panels, and machine control applications where safe, efficient, and accurate switching of low-power signals is required. It offers high durability, stable performance, and long electrical life in continuous industrial use.
🔹 Key Features
• Siemens 3TH Series auxiliary contactor relay
• Model: 3TH30220AR0
• Designed for control, signaling, and interlocking applications
• Used for extending auxiliary contact capacity of contactors
• High mechanical and electrical endurance
• Compact modular design for panel mounting
• Suitable for PLC and automation systems
• Reliable low-power switching performance
• Easy installation and maintenance-free operation
• Shock and vibration resistant construction
• Long service life in continuous duty
• Compatible with industrial control circuits
• Safe and stable operation in harsh environments
• Suitable for MCC and control distribution panels
| Parameter | Specification |
|---|---|
| Product Series | Siemens 3TH Auxiliary Contactor Relay |
| Model Number | 3TH30220AR0 |
| Product Type | Auxiliary Contactor Relay |
| Function | Control / Signal Switching / Interlocking |
| Contact Configuration | 2NO + 2NC (typical AR0 variant) |
| Coil Voltage | As per AR0 variant (refer datasheet) |
| Mounting Type | Panel Mounting |
| Application | PLC systems, MCC panels, control circuits |
| Brand | Siemens |
| Duty Type | Control / Auxiliary Switching |
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