Protection

Power Reliability for Data Centers: Components That Help Support Uptime

Galco — Thu, 04 Jun 2026 17:09:11 GMT

Data centers depend on continuous, reliable power. From servers and storage systems to cooling equipment, monitoring devices, control panels, and backup systems, every part of the facility relies on electrical infrastructure that must perform consistently.

Lovato's GL Series, Switch Disconnects

Galco — Tue, 19 Aug 2025 18:45:39 GMT

Lovato switch disconnectors pack versatility and flexibility within an easily mountable compact size. These three-pole switch disconnectors have dimensions of 162 mm wide up to 315 A, 203 mm from 320 A to 500 A, and 231 mm for 603 A. With simple DIN Rail mounting, these disconnectors offer versatile, multi-direction installation and can be adjusted in rotation and position. A rubber pad insert for sizes 160 A to 315 A prevents the disconnector from sliding on the DIN rail.

Schaltbau C303: The Best Compact Bi-Directional DC Contactor for High-Power Switching

Galco — Tue, 19 Aug 2025 18:44:12 GMT

Schaltbau has unveiled the C303 series , a 1-pole bi-directional DC NO contactor designed for demanding high-power applications. Rated for up to 1,500 V insulation voltage and capable of handling continuous currents up to 500 A, the C303 is built to ensure safe, efficient, and reliable switching in DC circuits, battery storage systems, EV charging stations, and test benches.

What sets the C303 apart? This compact, high-performance DC contactor offers full bi-directionality, meaning it can safely disconnect high power loads — up to 1.5 MW — regardless of the current direction. Whether used in charging or discharging applications, the C303 ensures safe operation without the risk of contacts welding, even under high short-circuit conditions.

Key Features & Benefits

Up to 25 Percent Energy Cost Savings

The C303's permanently low contact resistance minimizes energy loss and reduces heating, requiring less cooling and improving overall efficiency.

Full Bi-Directional Switching – V2G Ready

With its specially designed arc extinguishing chamber, the C303 safely disconnects power in both charging and discharging cycles, making it ideal for vehicle-to-grid (V2G) systems and energy recovery applications.

Safe High-Power Breaking – Up to 1.5 MW

The innovative main contact system delivers exceptional breaking capacity under full load, ensuring safety in DC energy storage and distribution systems.

Explosion-Proof, Maintenance-Free Operation

Using permanent magnetic arc extinguishing, the C303 eliminates the need for gas encapsulation, preventing overheating and overpressure risks while improving operational safety.

Compact, Industry-Optimized Design

Built for industrial applications, the C303 features a space-saving footprint, making it easy to integrate into compact systems where larger contactors won't fit.

High Availability & System Longevity

Its robust construction ensures a long service life, reducing maintenance costs and maximizing uptime in mission-critical applications.

Enhanced Safety Compliance

The C303 includes a mirror contact for safe switching feedback, meeting IEC 60947-4-1, Annex F safety requirements.

Three C303 Variants for Maximum Flexibility

Schaltbau offers three C303 versions, each designed for specific application needs:

Applications: Where the C303 Excels

The C303 series is built for high-performance DC switching and is ideal for applications that demand reliable power control, safety, and efficiency.

Battery Storage Systems and Stationary Energy Storage

Safely manages charging and discharging cycles
Ensures galvanic isolation of battery poles from the powertrain
Prevents contact welding, enhancing system safety

EV DC Charging Stations and Vehicle-to-Grid (V2G) Systems

Supports bidirectional energy flow for charging and grid integration
Delivers reliable high-power switching under load

Battery Test Benches and Regenerative Systems

Provides safe, repeatable switching in high-current DC test environments
Handles high making currents without damage

Why Choose the Schaltbau C303?

With its compact footprint, energy efficiency, full bi-directionality, and high-power switching capability, the C303 series is the perfect solution for demanding DC applications. Whether for EV infrastructure, energy storage, or industrial DC systems, Schaltbau delivers cutting-edge reliability with the C303 contactor.

Ready to Integrate the C303 into Your System?

Call 800-575-5562 today or visit us to learn more about Schaltbau's C303 bi-directional contactor!

Our solutions experts are ready to assist you!

Expand Motor Life Expectancy with Clean Power VFDs™

Galco — Tue, 19 Aug 2025 17:59:29 GMT

Variable Frequency Drives (VFDs) are essential in modern industrial applications, enabling precise motor control and energy savings. However, traditional VFDs come with a significant downside: they generate harmonics. These harmonics can lead to inefficiencies, increased maintenance costs, and ultimately decreased motor life. Fortunately, SmartD Technologies' Clean Power VFD offers a groundbreaking solution that mitigates these problems at their source, significantly extending motor life expectancy.

Understanding Harmonics and Their Impact

Harmonics are distortions in the electrical waveform, often generated by electronic devices like VFDs. On the motor side, traditional VFDs create a Pulse Width Modulation (PWM) signal to emulate a sine wave. This signal, characterized by its square-like voltage waveform, introduces harmonics due to the limited switching frequency of Insulated Gate Bipolar Transistors (IGBTs). On the grid side, the VFD's diode bridge architecture draws current non-linearly at the voltage waveform peaks, resulting in a current waveform rich in harmonic content.

These harmonics increase the total root mean square (RMS) current in motors, leading to higher copper and core losses. This excess current manifests as heat, which can cause thermal nuisance trips and degrade motor insulation over time, ultimately reducing motor efficiency and lifespan. Additionally, harmonic-induced high dV/dt (rate of change of voltage over time) can cause arcing, damaging motor windings and bearings, further reducing motor lifespan and efficiency.

Traditional Mitigation Strategies

Various strategies exist to mitigate harmonics, each with its own advantages and limitations. Active and passive harmonic filters can meet compliance standards but are often costly and require significant space and maintenance. Line reactors offer a lower-cost alternative but fall short of achieving the necessary harmonic reduction levels. Advanced VFD technologies, such as Active Front End (AFE) VFDs and Matrix VFDs, offer innovative solutions but come with higher costs and increased complexity.

Active Front End (AFE) VFDs

AFE VFDs incorporate an additional power conversion stage that actively controls the input current waveform, significantly reducing harmonic distortion. By using fast-switching devices like IGBTs, AFE VFDs shape the input current to be nearly sinusoidal, generally achieving Total Harmonic Distortion (THD) levels below the 5 percent target. However, these drives come with higher initial costs and potential electromagnetic interference (EMI) issues that require careful consideration.

Matrix VFDs

Matrix VFDs offer a direct AC-to-AC conversion without the intermediate DC bus, utilizing a matrix of bidirectional semiconductor switches. This design reduces harmonic content at both the input and output. Despite their advantages, Matrix VFDs are characterized by higher costs, complex control algorithms, limited power ratings, and the need for advanced thermal management and EMI mitigation.

The SmartD Technologies Approach

The Clean Power VFD's advanced design effectively eliminates harmonics at both the input and output side, ensuring THDi levels are well within the stringent limits set by IEEE 519. This proactive approach negates the need for external filters and reactors, simplifying installation and reducing overall system complexity.

Enhanced System Efficiency

By utilizing WBG semiconductors, SmartD's Clean Power VFD achieves significantly higher switching frequencies compared to traditional IGBT-based drives. This results in a more accurate emulation of a sine wave, reducing losses and improving overall system efficiency. The enhanced efficiency translates to lower energy consumption and reduced operational costs.

Smaller Installation Footprint

The compact design of the Clean Power VFD, facilitated by the high-performance WBG technology, requires less space for installation. This smaller footprint is particularly advantageous in applications where space is at a premium, offering greater flexibility in system design and layout.

Extending Motor Lifespan

One of the most significant benefits of the Clean Power VFD is its impact on motor lifespan. The near-true sine wave output of the Clean Power VFD significantly reduces stress on motor windings and bearings. This results in lower operating temperatures and reduced wear and tear. Consequently, the risk of thermal nuisance trips is minimized, and the operational lifespan of motors is extended, enhancing reliability and reducing long-term maintenance costs.

Reduction of Mechanical Stress

Harmonics create torque pulsations within the motor, causing mechanical vibrations, noise, and additional wear on motor bearings and couplings. These mechanical stresses can lead to premature failure of these components. By eliminating harmonics, the Clean Power VFD minimizes these pulsations, further contributing to the longevity and reliability of the motor.

Conclusion

SmartD Technologies' Clean Power VFD represents a significant advancement in VFD technology, offering a comprehensive solution to the challenges posed by harmonics. By addressing harmonics at their source, the Clean Power VFD not only meets and exceeds industry standards but also enhances system efficiency, reduces operational costs, and extends motor lifespan. For industries relying on VFDs, investing in SmartD's Clean Power VFD translates to long-term cost savings and improved system reliability, making it a superior and more cost-effective solution in the long run.

Contact Us Today!

Our experts will help you find the right solution you need and get it to you quickly.

Call 800-575-5562 for additional assistance.

Zoned Approach to Power Quality

Galco — Tue, 19 Aug 2025 14:54:16 GMT

A Power Quality Solutions focus ensures continued performance and less maintenance on your microprocessor-based equipment.

Reactors Provide A Low Cost Solution To Inverter Drive Power Quality

Galco — Sun, 17 Aug 2025 18:43:56 GMT

Overview

Three phase line reactors offer an economical solution to a variety of application problems in variable-speed drive installations. Reactors solve problems on either the input or the output of the drive if the reactor is compensated to handle the effects of harmonics. To see where these reactors fit in today's technology, we have to go back 25 years to the introduction of low-voltage industrial drives. Often, the installation required a voltage step-up or step-down and line isolation was almost universally recommended. The isolation transformer provided both line isolation and voltage transformation. It became standard practice to include a drive isolation transformer with nearly every drive installation.

What Is an RC Network?

Galco — Sun, 17 Aug 2025 18:38:32 GMT

What is an RC Network?

RC Networks are easily selectable electronic components designed to prevent or substantially minimize the occurrence of arcing and noise generation in relay and switch contacts.

What is an RC Filter?

Galco — Sun, 17 Aug 2025 18:34:25 GMT

What is an RC Filter?

RC Filters are easily selectable electronic components designed to prevent or substantially minimize the occurrence of arcing and noise generation in relay and switch contacts.

RC Filters consist of specially designed capacitors and resistors connected in series. Spark discharges and induced noise are absorbed over a wide range by the accumulation characteristic and impedance of the capacitor, while the RC time constant delays and averages surge voltage and oscillations.

ABB Power Factor Correction Capacitors

Galco — Fri, 15 Aug 2025 20:28:11 GMT

ABB Control has the best solution for Low Power Factor and Harmonic Distortion.

What Is a Molded Case Circuit Breaker (MCCB)?

Galco — Fri, 15 Aug 2025 19:26:13 GMT

MCCB Components and Applications

Molded case circuit breakers (MCCBs) are UL 489-approved circuit breakers whose current-carrying parts, mechanisms and trip devices are all completely contained within a molded case of insulating material. MCCBs are available in various frame sizes with various interrupting ratings for each frame size. MCCBs are one of the two basic low voltage classes of circuit breakers.