# Siemens 3Un2100-0Cb4 Thermistor Motor Protection Relay - 24V DC

The Siemens Thermistor Motor Protection Relay 3Un2100-0Cb4 is an efficient solution designed to protect your motors from potential damage. This Siemens 3Un21 24V DC relay adheres to Vde 0660 and Iec 34-11 standards, ensuring top-notch quality and reliable performance for your motor protection needs.

This Siemens relay, manufactured in Germany, is built for durability in demanding industrial settings. The 3Un2100-0Cb4 model features a 1 SPDT B300 Q300 B/9006310 configuration. It's capable of handling AC11 3A 220V and DC11 3A 24V currents. **Thermistor Motor Protection Relay** safeguards your motor from overload and short circuits.

-   **Reliable Motor Protection:** Prevents damage from overload and short circuits.
-   **High Standards:** Meets Vde 0660 and Iec 34-11 standards.
-   **Durable Construction:** Built to withstand demanding industrial environments.
-   **Easy Installation:** Lightweight design for practical application.
-   **German Engineering:** Ensures precise performance and longevity.

**Specifications:**  
Voltage: 24V DC  
Current Rating: AC11 3A 220V, DC11 3A 24V  
Configuration: 1 SPDT B300 Q300 B/9006310  
Weight: 130 grams

Trust in Siemens for quality and reliability in motor protection. This **Siemens 3Un2100-0Cb4** relay is a smart investment for maintaining safe and operational motors in your industrial or automation systems. Contact Ram Automations at info@ramautomations.com for more details.

## Details

- **Price:** 999.0 USD
- **Vendor:** Siemens
- **Type:** Industrial Automation > Motor Control > Protection Relays
- **Tags:** 24V DC relay, 3Un2100-0Cb4, industrial automation, motor protection relay, Ram Automations, Siemens, thermistor motor protection

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Used | 999.00 USD | In stock |

## Images

- Siemens 3Un2100-0Cb4 Thermistor Motor Protection Relay - 24V DC-Ram Automations

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> Source: [Ram Automations](https://ramautomations.com/products/siemens-3un2100-0cb4-motor-relay)
> Updated: 2026-09-19