# Schneider Masterpact MTZ2 40H1 Circuit Breaker 4000A 3 Poles Fixed H10B21

Introducing the **Schneider Masterpact MTZ2 40H1** circuit breaker, a robust solution for critical industrial automation and power distribution needs. This **fixed 3 poles** breaker is designed for demanding environments, offering exceptional protection and reliability for your electrical systems. It provides a high current rating of **4000 A** and a breaking capacity of **66 kA** at **440 Vac**, ensuring safety and operational continuity. The **Schneider H10B21** is engineered for superior performance in power management applications.

Engineered for advanced control systems, the **Schneider Masterpact MTZ2 40H1** circuit breaker operates seamlessly within **50-60 Hz** frequency ranges. Its construction without a Micrologic unit allows for tailored integration into existing automation setups. This breaker is ideal for facility managers and electrical engineers seeking dependable overcurrent protection. For those requiring a basic frame without advanced tripping units, the **Schneider H10B21** offers a straightforward yet powerful protection component for industrial automation.

-   High performance **4000 A** current rating
-   Robust **66 kA** breaking capacity at **440 Vac**
-   Durable **3 poles fixed** configuration for stability
-   Designed for seamless integration into **industrial automation** systems
-   Reliable operation within **50-60 Hz** frequency

### Specifications:

Brand Schneider  
Model Masterpact MTZ2 40H1  
Part Number H10B21  
Current Rating 4000 A  
Breaking Capacity 66 kA  
Voltage Rating 440 Vac  
Frequency 50-60 Hz  
Poles 3  
Configuration Fixed  
Micrologic Unit Not Included

Trust in the quality and innovation of **Schneider Electric** for your essential power protection. The **Masterpact MTZ2 40H1** circuit breaker, identified by part number **H10B21**, is a dependable choice for safeguarding your industrial operations. Explore its capabilities for your next project and ensure optimal system performance.

## Details

- **Price:** 999.0 USD
- **Vendor:** Schneider Electric
- **Type:** Industrial Automation > Circuit Protection > Circuit Breakers
- **Tags:** 4000A circuit breaker, 440V breaker, fixed circuit breaker, H10B21, industrial automation, power distribution, Schneider circuit breaker, Schneider Masterpact MTZ2 40H1

## Variants

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

## Images

- Schneider Circuit Breaker Basic Frame Masterpact Mtz2 40h1 4000 A 66 Ka At 440 Vac 50-60 Hz 3 Poles Fixed Without Micrologic Schneider-Ram Automations

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> Source: [Ram Automations](https://ramautomations.com/products/schneider-masterpact-mtz2-40h1-h10b21-breaker)
> Updated: 2026-09-26