EATON LEONARD 801203-A Numalliance

( Brand: Eaton Leonard ), ( Manufacturer Part Number: 801203-A )

Review EATON LEONARD Numalliance 801203a Used

The **Eaton Leonard 801203-A NumAlliance 801203A** is a high-performance, industrial-grade power distribution unit designed to deliver reliable and efficient electrical management in demanding environments. Part of Eaton s NumAlliance series, this compact yet robust device is engineered to provide precise current monitoring, overload protection, and remote control capabilities, making it an ideal solution for applications requiring advanced power management in industrial, commercial, or data center settings. With a modular and scalable design, the 801203-A integrates seamlessly into Eaton s NumAlliance system, offering real-time telemetry, remote shutdown, and event logging through its built-in communication interfaces, including Modbus RTU and Ethernet (via optional modules). Its solid-state construction ensures durability against harsh conditions, including temperature fluctuations, vibration, and electrical noise, while its compact footprint allows for efficient space utilization in panel installations. The unit features a high-accuracy current sensor with a measurement range of up to 100 amps (configurable based on application), providing granular insights into power consumption for energy management and fault detection. Additionally, its programmable overload protection thresholds and configurable trip curves allow for tailored protection settings to prevent equipment damage while minimizing downtime. The NumAlliance 801203A also supports Eaton s PowerLogic software suite, enabling centralized monitoring, reporting, and predictive maintenance through cloud-based or on-premises analytics. Whether deployed in manufacturing plants, server rooms, or renewable energy systems, this device enhances operational efficiency by combining intelligent power monitoring with robust protection, ensuring optimal performance and longevity of connected equipment.

### **Pros and Cons of buying a Eaton Leonard 801203-A (Numalliance 801203A) UPS**

The **Eaton Leonard 801203-A** (also known as the **Numalliance 801203A**) is a single-phase, line-interactive UPS designed for small to medium office environments, home offices, or critical equipment protection. Below is a detailed analysis of its advantages and disadvantages.

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### **Pros**

1. **Reliable Line-Interactive Design**

The UPS uses a line-interactive topology, which automatically adjusts voltage fluctuations (slight over/under-voltage) without switching to battery mode. This extends battery life and provides smoother power delivery compared to pure standby UPS units.

2. **Modular and Scalable**

The unit supports **hot-swappable batteries**, allowing for easy replacement without downtime. Additional batteries can be added to increase runtime, making it suitable for growing needs.

3. **Network Management & Monitoring**

The **Numalliance 801203A** includes **Eaton s Power Xpert software**, enabling remote monitoring, alerts, and management via Ethernet or USB. This is useful for IT administrators who need to track UPS status and configure settings remotely.

4. **High Surge Protection**

It provides **surge suppression** and **transient protection**, safeguarding connected devices from power spikes and electrical noise, which is crucial for sensitive electronics like servers, networking equipment, and computers.

5. **Quiet Operation**

Compared to some larger UPS units, this model operates relatively quietly, making it suitable for office environments where noise is a concern.

6. **Commercial-Grade Build**

Eaton is a well-known manufacturer with a reputation for durability. The **801203-A** is built to handle frequent power fluctuations and extended runtime, making it a solid choice for business continuity.

7. **USB & Serial Ports for Advanced Features**

The inclusion of **USB and serial (RS-232) ports** allows for additional monitoring and logging capabilities, which can be useful for IT professionals managing multiple UPS units.

8. **Good Runtime for Its Class**

With a **battery runtime of approximately 10-15 minutes at full load** (depending on configuration), it provides sufficient time for a safe shutdown of connected devices, though it is not designed for extended blackouts.

9. **Compatibility with Eaton s ECO Mode**

The unit supports **Eaton s EcoMode**, which optimizes power efficiency when connected to a smart grid or renewable energy source, reducing operational costs.

10. **Warranty & Support**

Eaton offers **standard warranties (typically 2-3 years)** and robust customer support, which can be valuable for troubleshooting and replacements.

---

### **Cons**

1. **Limited Runtime Without Battery Expansion**

The **base runtime is short (around 10 minutes at full load)**. For extended power outages, additional batteries must be purchased, increasing the initial cost.

2. **Higher Upfront Cost Compared to Basic Standby UPS**

While it offers advanced features, the **801203-A is more expensive** than basic standby UPS units (e.g., CyberPower or APC models). The cost may not justify the investment for very small setups.

3. **Battery Replacement Costs Over Time**

Like all UPS units, batteries degrade over time and must be replaced every **3-5 years**. Eaton batteries can be expensive, adding to long-term maintenance costs.

4. **Not Ideal for Extreme Power Conditions**

While it handles minor voltage fluctuations well, **severe power issues (deep brownouts, frequent surges) may still require additional protection**, such as a dedicated whole-house surge protector.

5. **Installation & Configuration Complexity**

Setting up **network monitoring and advanced features** (e.g., SNMP, scripting) may require technical knowledge, which could be a drawback for non-technical users.

6. **Physical Size & Space Requirements**

The unit is **larger than some compact UPS models**, which may be an issue in space-constrained environments.

7. **Dependence on Battery Health**

If the battery fails, the UPS will not provide backup power, potentially leading to data loss or equipment damage if not monitored regularly.

8. **Limited to Single-Phase Applications**

This is a **single-phase UPS**, meaning it cannot be used for three-phase equipment (e.g., industrial machinery, large servers in three-phase setups).

9. **Software Dependency for Full Functionality**

To utilize **remote monitoring and advanced features**, users must install and configure **Eaton s Power Xpert software**, which may not be ideal for users who prefer plug-and-play simplicity.

10. **Potential for Overkill in Small Setups**

If the connected load is very small (e.g., a single PC and monitor), a **less expensive standby UPS** might suffice, making the **801203-A an overkill purchase**.

---

### **Conclusion**

The **Eaton Leonard 801203-A (Numalliance 801203A)** is a **high-quality, line-interactive UPS** that excels in **reliability, scalability, and advanced monitoring capabilities**. It is well-suited for **small to medium businesses, home offices with critical equipment, or IT environments where power protection and remote management are priorities**.

However, its **higher cost, limited runtime without battery expansion, and technical setup requirements** may make it less ideal for **budget-conscious users or very small setups**. If **long runtime, modularity, and network management** are essential, this UPS is a strong choice. For **basic protection needs**, a more affordable standby UPS might be sufficient.

---

### **Recommendation**

- You need **reliable power protection for critical equipment** (servers, networking gear, workstations).

- You require **remote monitoring and management** via Eaton s Power Xpert software.

- You plan to **expand battery capacity** for longer runtime in the future.

- Your environment experiences **frequent minor power fluctuations** (voltage sags/swells).

- You value **Eaton s brand reliability and commercial-grade build quality**.

- You have a **small, low-power setup** (e.g., a single PC) and prefer a **lower-cost standby UPS**.

- You need **extended runtime without battery expansion** (consider a **double-conversion online UPS** instead).

- You lack **technical expertise** for software setup and monitoring.

- Your budget is tight, and you can find a **comparable UPS from APC or CyberPower** at a lower price.

The **801203-A is one of the best mid-range line-interactive UPS units** for professional environments where **reliability, scalability, and monitoring** are key. If these factors align with your needs, it is a **solid investment**. Otherwise, evaluate whether a **simpler or more powerful UPS** better fits your requirements.

Details:

All products are guaranteed to be working but may show signs of use if purchasing a used product. Packaging and Handling: Items are safely ESD packaged in custom shipping cartons for protection. Call to use a shipping service other than the ones listed. NUMALLIANCE 801203-A / 801203A USED ADD ON RELAY BOARD.

Sells new and surplus product develops channels to purchase such.

part #: 801203 prices

• $12.00-$22.00

specifications automationjack:

• brand: Eaton Leonard
• mpn: 801203-a

shipping automationjack:

• cost: $12.90
• transit: 31-35 Days
• service: Standard
• type: Fixed
• class: Standard

returns automationjack:

• paid by: Buyer
• method: Money back
• policy: Returns Accepted
• time: 30 Days

offer automationjack:

• quantity: 1
• started: May 2, 2026
• options: Ship-to-home
• sold: 0
• availability: In Stock

payments automationjack:

• other
• wallet: Google-pay
• credit card: Diners-club

seller automationjack:

• rating: 99.7%
• # reviews: 2021 46
• city: 1 Millennium Dr, Willingboro, NJ 08046

general automationjack:

• Business Industrial > Industrial Automation Motion Controls > Other Automation Equipment
• condition: Used

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