VERIS H421 Hawkeye Split Core Transformer Adj Span

( Brand: Veris ), ( Manufacturer Part Number: H421 )

Review VERIS Hawkeye 421 Split Core Ct Current Transformer Span Adj Range

The **Veris H421 Hawkeye 421 Split-Core Transformer with Span Adjustment** is a high-performance, precision-engineered power transformer designed for demanding industrial, commercial, and laboratory applications where reliable voltage regulation and flexibility are paramount. Built with a robust split-core design, this transformer allows for effortless installation and removal without disrupting existing wiring, making it ideal for retrofitting or temporary setups where downtime must be minimized. Its compact yet durable construction features a high-quality core made from premium silicon steel laminations, ensuring minimal energy loss and superior efficiency even under continuous heavy loads. The H421 Hawkeye 421 operates at a nominal rating of **421 VA (421 volt-amperes)**, providing ample capacity for a wide range of applications, including test equipment, control systems, signal conditioning, and low-voltage power supplies where precise voltage control is essential.

One of the standout features of this transformer is its **adjustable span control**, which allows operators to fine-tune the output voltage range with precision. This functionality is particularly valuable in applications requiring variable voltage outputs, such as calibration setups, electronic testing, or adjustable power distribution systems. The span adjustment mechanism is user-friendly, typically accessed via a front-panel control or external potentiometer, enabling quick and accurate calibration to meet specific voltage requirements without the need for additional external components. The transformer s **split-core design** further enhances its versatility, as it can accommodate a variety of wire gauges and conductor sizes, from single strands to bundled cables, without compromising performance. This adaptability makes it a versatile choice for both permanent installations and field deployments where flexibility is critical.

Constructed with **high-grade insulation materials**, including reinforced polyester film and epoxy resin coatings, the H421 Hawkeye 421 is engineered to withstand harsh environmental conditions, including temperature fluctuations, moisture, and vibration. Its robust enclosure, often featuring a rugged metal or high-impact plastic housing, provides excellent protection against physical damage and electrical interference, ensuring long-term reliability in demanding environments. Additionally, the transformer is designed with **low-noise operation**, thanks to its optimized winding and core construction, which minimizes electromagnetic interference (EMI) and radio frequency interference (RFI), making it suitable for sensitive electronic systems where signal integrity is a priority.

For enhanced safety and usability, the Veris H421 Hawkeye 421 incorporates **built-in protection features**, such as thermal overload relief and short-circuit resistance, which help prevent damage from overloading or fault conditions. The transformer s **low-profile design** also allows for easy integration into confined spaces, such as control panels, test benches, or equipment racks, without sacrificing performance. Whether used in industrial automation, research laboratories, or commercial power distribution systems, this transformer delivers **consistent, clean, and adjustable power** with minimal heat dissipation, contributing to energy efficiency and operational reliability.

Overall, the **Veris H421 Hawkeye 421 Split-Core Transformer with Span Adjustment** represents a superior choice for professionals seeking a durable, high-performance, and adaptable power solution. Its combination of precision engineering, ease of installation, and customizable voltage output makes it an indispensable tool for applications where power quality and flexibility are non-negotiable. With a focus on durability, efficiency, and user convenience, this transformer stands out as a dependable workhorse in any technical or industrial setting.

### **Pros and Cons of buying a Veris H421 Hawkeye 421 Split-Core Transformer (Span Adjustable)**

#### **Pros**

1. **Split-Core Design** Allows easy installation without disconnecting wiring, making it ideal for retrofitting existing setups. This reduces downtime and simplifies installation in tight spaces.

2. **Span Adjustability** The ability to adjust the span (distance between primary and secondary coils) provides flexibility in calibration for different applications. This is particularly useful in industrial environments where load variations or measurement accuracy requirements change.

3. **High Accuracy and Precision** Designed for accurate current measurement, making it suitable for applications requiring precise monitoring, such as in industrial automation, power distribution, or testing labs.

4. **Durability and Build Quality** Veris products are generally known for robust construction, capable of withstanding harsh environments. The H421 appears to be built for reliability in industrial settings.

5. **Compatibility with Veris Systems** If you re already using other Veris equipment, this transformer integrates seamlessly, ensuring consistency in your measurement and control systems.

6. **Low Burden Factor** Split-core transformers typically have minimal impact on circuit performance, reducing errors in current measurement.

7. **Versatility** Can be used for both AC and DC applications (with appropriate limitations), though DC performance may vary based on the specific model and setup.

8. **Easy Calibration** The span adjustment feature simplifies calibration processes, allowing users to fine-tune readings without complex recalibration procedures.

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#### **Cons**

1. **Limited DC Capability** While some split-core transformers work with DC, the H421 may have restrictions or require additional components (e.g., a shunt or amplifier) for accurate DC measurements. Always verify compatibility with your specific DC application.

2. **Size and Installation Constraints** Split-core transformers can be bulkier than clamp-on meters, and the open-core design may not fit in very tight spaces. Physical installation may require careful planning to ensure proper alignment and measurement accuracy.

3. **Cost** Compared to basic clamp meters or traditional current transformers, a high-quality split-core transformer like the H421 can be more expensive. The price may not justify the purchase if you only need occasional current measurements.

4. **Potential Signal Loss** If not properly aligned or if the span is not correctly adjusted, the transformer may introduce errors in measurement, especially at low currents or with rapidly changing loads.

5. **Dependence on Proper Usage** Misuse, such as improper alignment with the conductor or exposing the core to excessive mechanical stress, can damage the transformer or compromise accuracy.

6. **Limited Range** The H421 may have specific current ranges (e.g., 0-500A, 0-1000A). If your application requires measurements outside these ranges, additional transformers or scaling may be needed.

7. **Maintenance Requirements** Like any precision instrument, the H421 may require periodic checks for dust, corrosion, or alignment issues, particularly in industrial environments with harsh conditions.

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### **Conclusion**

The **Veris H421 Hawkeye 421 Split-Core Transformer** is a powerful tool for applications requiring **accurate, non-invasive current measurement** in industrial, testing, or automation settings. Its **split-core design** and **span adjustability** make it highly versatile for retrofitting and calibration tasks. However, it is **not ideal for all use cases**, particularly if you need **portability, DC measurements without additional components, or budget-friendly solutions**.

If your primary need is **precise, long-term industrial monitoring** where ease of installation and calibration are critical, this transformer is a strong choice. For **casual or low-budget users**, a clamp meter or a simpler current transformer may suffice.

### **Recommendation**

- You need a **split-core transformer for industrial or testing applications**.

- You require **span adjustability** for custom calibration.

- You are already using **Veris systems** and need seamless integration.

- Your application involves **AC current measurement** with minimal burden impact.

- You primarily measure **DC currents** without additional hardware.

- You need a **portable, lightweight solution** (consider a clamp meter instead).

- Your budget is tight, and you can achieve similar results with a lower-cost alternative.

- Your installation space is extremely limited, and the transformer s size may be impractical.

For the best results, **verify compatibility with your specific current ranges, voltage levels, and environmental conditions** before purchasing. If in doubt, consult Veris s technical documentation or a specialist to ensure the H421 meets your exact requirements.

Details:

Two-wire design reduces wiring cost. 100% solid state, no moving parts to fail. Load trending of large motors. D-U-N-S: 01-246-1875, Expiring BIN: 961642662, LEI: 984500DZF582F7RD9J66.

Range: 0-1200AAC Output: 4-20mA Loop, H421 analog current transducers provide reliable load trending information for large motor loads 1000 to 2400A, with a proportional 4 20mA signal. Building automation systems. This model includes a span potentiate that allows each sensor to be calibrated for maximum resolution. In addition, we often have more than the listed quantity in stock.

SAM UEI: L1UUS9LTYXG7, CAGE NCAGE: 9KWG6, Section 889 Compliant. This includes automation, building controls, electrical, HVAC, plumbing, and industrial materials.

part #: h421 prices

• $350.99-$400.00

specifications hvaapa:

• brand: Veris
• mpn: H421

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• method: Money back
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• time: 60 Days
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general hvaapa:

• HVAC Refrigeration > HVAC Refrigeration: Parts Accessories > HVAC Refrigeration: Controls Circuit Boards
• condition: Seller refurbished

offer hvaapa:

• availability: In Stock
• quantity: 1
• started: May 24, 2026
• options: Ship-to-home
• sold: 0

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seller hvaapa:

• # reviews: 6948
• rating: 99.9%
• city: Tempe, Arizona

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