# Siemens 3RT2045-1AP00 AC-3 Contactor 37kW 230VAC 1NO 1NC

Experience robust motor control with the Siemens **3RT2045-1AP00** AC-3 contactor. Engineered for demanding industrial automation systems this **Siemens** 3-pole power contactor reliably switches three-phase motors up to 37 kW at 400V. Its 230VAC 50Hz coil ensures stable operation while integrated 1NO + 1NC auxiliary contacts provide essential control and monitoring capabilities for complex circuits. This contactor is built on the trusted **SIRIUS 3RT20** series offering exceptional electrical endurance and mechanical reliability for applications like motor starters pumps compressors and HVAC systems.

This **Siemens contactor** features a heavy-duty S3 frame construction designed for high switching endurance in industrial environments. It is perfectly suited for professionals seeking dependable performance in automation control systems. If you need precise control for your three-phase motors and require a component built for longevity and efficiency the **3RT2045-1AP00** is an excellent choice. Its 80A rated operational current and 400V rated voltage make it versatile for numerous heavy-duty applications.

-   High-performance **Siemens AC-3 contactor** rated for 37 kW at 400V.
-   Stable **230VAC 50Hz coil** for consistent control.
-   Integrated **1NO + 1NC auxiliary contacts** for flexible signaling.
-   Durable **S3 frame construction** ensures long service life.
-   Ideal for motor control applications in industrial automation.

**Siemens** delivers trusted quality for your critical automation needs. Ensure reliable operation with the **3RT2045-1AP00** contactor. Discover its capabilities for your demanding industrial applications today.

## Details

- **Price:** 999.0 USD
- **Vendor:** Siemens
- **Type:** Industrial Automation > Control Components > Contactors
- **Tags:** 1no 1nc, 230vac contactor, 37kw contactor, 3RT2045-1AP00, ac3 motor control, industrial automation, power contactor, siemens 3rt20, siemens contactor

## Variants

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

## Images

- Siemens 3RT2045-1AP00 AC-3 Contactor 37kW 230VAC 1NO 1NC-Ram Automations

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> Source: [Ram Automations](https://ramautomations.com/products/siemens-3rt2045-1ap00-contactor-37kw)
> Updated: 2026-09-30