# Siemens 3NH3420 Circuit Breaker - Industrial Automation Protection

Ensure reliable electrical protection with the Siemens 3NH3420 Circuit Breaker. Designed for demanding industrial automation applications this essential component safeguards your systems from overcurrent and short circuits providing critical operational continuity. Its robust construction guarantees longevity and consistent performance even in harsh environments.

The Siemens 3NH3420 leverages advanced thermal-magnetic tripping technology for precise fault detection and rapid disconnection. This unit is engineered for seamless integration into modern control systems and power distribution panels offering dependable protection for machinery and sensitive electronic equipment crucial for efficient automation processes.

-   **High Performance**: Delivers consistent and reliable circuit protection.
-   **Durable Construction**: Built to withstand industrial operating conditions.
-   **System Compatibility**: Integrates smoothly with existing automation setups.
-   **Enhanced Safety**: Protects valuable equipment from electrical faults.

### Specifications

**Brand** Siemens  
**Part Number** 3NH3420  
**Application** Industrial Automation  
**Type** Circuit Breaker

Trust in the proven reliability of Siemens for your industrial automation needs. The 3NH3420 circuit breaker is a testament to quality engineering providing peace of mind for your critical infrastructure. Explore our range of Siemens automation solutions today.

## Details

- **Price:** 999.0 USD
- **Vendor:** Siemens
- **Type:** Industrial Automation > Circuit Protection > Circuit Breakers
- **Tags:** 3NH3420 circuit breaker, automation components, control systems, electrical protection, industrial automation, power distribution, Siemens 3NH3420, Siemens circuit breaker

## Variants

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

## Images

- Siemens 3NH3420 Circuit Breaker - Industrial Automation Protection-Ram Automations

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> Source: [Ram Automations](https://ramautomations.com/products/siemens-3nh3420-circuit-breaker)
> Updated: 2026-09-23