The Siemens 3RT1956-1CD00 is a SIRIUS surge suppressor (RC element) designed for use with 3-pole 3RT1 and 3RT2 contactors, specifically compatible with S6, S10, and S12 frame sizes. This accessory helps suppress voltage spikes generated when contactor coils are switched OFF, protecting sensitive control devices and improving overall system reliability.
The surge suppressor utilizes an RC suppression circuit that effectively minimizes transient overvoltages and electromagnetic interference (EMI) within control circuits. By reducing switching surges, it helps protect PLCs, timers, relays, control modules, and other automation equipment from electrical stress.
This model is designed for contactor coils operating within 127–240V AC or 150–250V DC control voltage ranges and features a screw-terminal connection for secure installation.
The 3RT1956-1CD00 is commonly used in motor control centers (MCCs), industrial automation systems, manufacturing plants, HVAC equipment, process industries, and power distribution panels, where reliable contactor operation and protection of control electronics are essential.
As a genuine Siemens SIRIUS accessory, it ensures seamless compatibility, easy installation, and long-term operational reliability.
• Genuine Siemens SIRIUS surge suppressor
• Model: 3RT1956-1CD00
• RC element surge suppression technology
• Designed for 3RT1 and 3RT2 contactors
• Suitable for S6, S10, and S12 frame sizes
• Coil voltage range: 127–240V AC / 150–250V DC
• Reduces switching voltage spikes and EMI
• Protects PLCs, relays, and control electronics
• Screw-terminal connection design
• Easy installation and maintenance
• High reliability and long service life
| Parameter | Specification |
|---|---|
| Product Series | Siemens SIRIUS |
| Model Number | 3RT1956-1CD00 |
| Product Type | Surge Suppressor (RC Element) |
| Compatibility | 3RT1 & 3RT2 Contactors |
| Suitable Frame Sizes | S6, S10, S12 |
| Control Voltage (AC) | 127–240V AC |
| Control Voltage (DC) | 150–250V DC |
| Connection Type | Screw Terminal |
| Function | Coil Surge Suppression |
| Application | Control Circuit Protection |
| Installation Type | Contactor Accessory |
| Brand | Siemens |
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