# SIEMENS 3UN2131-0AF7 Thermistor Relay 110-120V Industrial Automation Control

The **SIEMENS 3UN2131-0AF7** is a highly reliable thermistor relay designed for critical industrial automation applications. This component ensures precise temperature monitoring and control within complex machinery, safeguarding against overheating and potential equipment damage. Its robust construction and advanced technology make it an indispensable part of modern control systems, offering enhanced operational safety and efficiency for demanding environments. The **SIEMENS 3UN2131-0AF7** is engineered for seamless integration into existing automation setups.

Engineered for consistent performance in industrial settings, the **SIEMENS 3UN2131-0AF7** operates efficiently within a 110-120V range. This thermistor relay is crucial for maintaining optimal operating temperatures, preventing failures in motors, pumps, and other vital automation components. It provides accurate thermal protection, a key feature for extending equipment lifespan and minimizing downtime. Its design prioritizes ease of installation and reliable long-term operation, making it a trusted choice for control panel builders and maintenance engineers. The **SIEMENS 3UN2131-0AF7** is built to meet stringent industry standards for safety and performance.

-   **Precise Temperature Monitoring** for critical automation processes.
-   **Enhanced Equipment Protection** against overheating and thermal stress.
-   **Reliable 110-120V Operation** for widespread industrial compatibility.
-   **Durable Construction** designed for demanding industrial environments.
-   **Seamless Integration** into existing industrial control systems.

### Specifications:

**Brand:** SIEMENS  
**Part Number:** 3UN2131-0AF7  
**Voltage Rating:** 110-120V  
**Type:** Thermistor Relay

The **SIEMENS 3UN2131-0AF7** thermistor relay represents a commitment to quality and performance in industrial automation. Its advanced features and dependable operation make it an ideal solution for safeguarding your valuable machinery. Trust SIEMENS for your essential control and protection needs.

## Details

- **Price:** 999.0 USD
- **Vendor:** SIEMENS
- **Type:** Industrial Automation > Control Components > Relays
- **Tags:** 110-120V, control systems, equipment protection, industrial automation, SIEMENS 3UN2131-0AF7, SIEMENS relay, temperature monitoring, thermistor relay

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 999.00 USD | In stock |

## Images

- SIEMENS 3RW4445-2BC45 AC SEMICONDUCTOR MOTOR SOFT STARTER

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> Source: [Ram Automations](https://ramautomations.com/products/siemens-3un2131-0af7-thermistor-relay)
> Updated: 2026-09-21