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Summary The Magnelab SCT series of current transformers (CT’s), also known as current transducers, are designed to produce a safe usable output when properly installed around a primary conductor carrying AC current. In most cases the output is pre-burdened to a small output voltage linearly proportional to the primary current. Although a non-burden version is […]

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DISTRIBUTECH 2020 We’re looking forward to seeing you next week at DistribuTECH! You can find us at booth #3062 with our distribution partner, Aim Dynamics. If you haven’t had a chance to register yet, you can still do so here. If you would like to schedule a meeting with one of our representatives at the […]

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Magnelab’s 50th Anniversary Celebration Video Link

Magnelab has provided the highest quality current sensors and custom magnetics for over 50 years. We recently celebrated this milestone by inviting Magnelab’s founder, employees, and customers to a celebration in Longmont, Colorado. The following video is part of that celebration. For access to the video, please copy and paste the following link in your […]

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MAGNELAB’S 50th Anniversary Celebration

Held at Fox Hill Country Club Longmont, CO Friday, August 10, 2018 Dear Colleagues, We are among the fortunate few companies our size to be able to celebrate 50 years of service to our industry and our community. First we need to contribute our success to the founder Carl Forsberg, a brilliant engineer who built […]

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Video - Magnelab UL Listed Rogowski Coils

Video – Magnelab UL Listed Rogowski Coils

New Video Featuring Magnelab UL Listed Rogowski Coils Please watch Magnelab UL listed Rogowski coils short 2-minute video at the following link: If you like the video, please like it and subscribe to our page at Magnelab, Inc. For more information contact us at, or call us at 303-772-9100 This video features Eric […]

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Magnelab’s First Line of UL Listed Rogowski Coils

UL Listed Rogowski Coils UL Listed Versus UL Recognized Rogowski Coils As one of the world’s most respected designers and manufacturers of AC current sensors, Magnelab ( is pleased to lead the way with production of our first line of Rogowski coils to receive UL listed classification. As a matter of fact, Magnelab’s upgraded line […]

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Real-Time Electricity Savings for Schools Using Magnelab Current Transformers

Dara Ward Energy & Sustainability Manager St. Vrain Valley Schools Real-Time Electricity Savings for Schools Using Magnelab Current Transformers Introduction By installing flexible Magnelab current transformers in combination with eGauge real-time electricity monitoring devices, St. Vrain Valley School District (SVVSD) has been effective in pursuing advanced energy conservation and behavior programs. If executed properly and […]

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split core current sensor

How to Determine Core Size in Current Transformers

How to Determine Core Size in Current Transformers Ever wonder how to determine core size in current transformers? The following article by Eric Christensen and George Langer examines the factors related to current transformer cores. Be sure to contact Magnelab at 303-772-9100 for all your current transformer needs. To determine the correct core for a […]

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Magnelab and ReNew Our Schools

Since 2007 Magnelab and eGauge systems have supported the Center for ReSource Conservation’s ReNew Our Schools program.  That program organizes groups of between 9 and 15 schools into one month energy conservation competitions and provides real-time monitoring for the students to receive feedback on the impact of their behavior.  District energy managers then go on […]

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Figure 2: The costs and benefits of various electrical usage data sources.

The benefits of high quality electrical usage interval data

This paper will describe how to use low cost components to gain actionable information and save money on commercial electric demand rates.  Case study examples are provided from projects in Colorado. Understanding electrical load profiles and demand rates Utilities typically apply demand rates to commercial customers.  Under such rates businesses are billed for their demand […]

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