# Terasaki AT123 AT12 Tempower 3 Pole Air Circuit Breaker 1250A

Protect your industrial power systems with the robust TERASAKI ELECTRIC AT12 TEMPOWER 3-POLE AIR CIRCUIT BREAKER part number **AT123**. Engineered for demanding applications, this breaker offers superior overcurrent protection and operational reliability. It is a critical component for ensuring the safety and efficiency of electrical distribution networks in industrial settings. When you need dependable circuit protection, think **TERASAKI ELECTRIC**.

The **AT123** breaker operates seamlessly within voltages up to 690 VAC and handles rated currents of 1250 A. Its compliance with the IEC 947-2 standard and utilization category B designation highlights its advanced design for various operating conditions. This breaker is ideal for automation use and complex control systems requiring high fault current interruption capabilities. It provides excellent protection against overcurrent faults with a breaking capacity (ICU) of 550-600V at 50/50 kA and an ICS of 100% ICU. The short-time withstand current (ICW) rated at 50 kA for 1 second and 45 kA for 3 seconds ensures resilience in challenging environments.

-   High-performance **TERASAKI ELECTRIC AT12 TEMPOWER** circuit breaker for industrial applications.
-   Advanced overcurrent protection with a **1250 A** rating and **690 VAC** operational voltage.
-   Compliant with **IEC 947-2** standard for reliable performance and safety.
-   Robust construction designed for durability and long service life in demanding environments.
-   Essential for industrial automation and control systems requiring dependable power protection.

### Specifications:

Rated Voltage: 690 VAC  
Rated Current: 1250 A  
Number of Poles: 3  
Breaking Capacity ICU: 550-600V at 50/50 kA  
Utilization Category: B

Experience the peace of mind that comes with using the **TERASAKI ELECTRIC AT12 TEMPOWER** circuit breaker. Its proven performance and trusted brand reputation make it the optimal choice for safeguarding your critical electrical infrastructure. Invest in quality and reliability for your automation needs.

## Details

- **Price:** 999.0 USD
- **Vendor:** Terasaki Electric
- **Type:** Industrial Automation > Circuit Protection > Air Circuit Breakers
- **Tags:** 1250A Circuit Breaker, 3 Pole Air Circuit Breaker, AT12 Tempower, IEC 947-2, Industrial Circuit Protection, Ram Automations, Terasaki AT123, Terasaki Electric

## Variants

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

## Images

- Terasaki AT123 AT12 Tempower 3 Pole Air Circuit Breaker 1250A-Ram Automations

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> Source: [Ram Automations](https://ramautomations.com/products/terasaki-at123-tempower-air-circuit-breaker)
> Updated: 2026-09-19