INTEKS insights

Product notes and buyer guides.

Product notes, selection guidance and practical reading for electrical buyers, contractors and panel builders.

September 24, 2026 · 12 min read

Industrial Limit Switch Selection: The Small Component That Tells a Machine Where It Is

Learn how industrial limit switches detect machine position, how roller lever and plunger actuators differ, what NO/NC and snap-action contacts mean, and what to check before selecting a replacement.

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September 23, 2026 · 11 min read

Thermal Overload Relay Trip Class: Why Class 10, 20 and 30 Are Not Interchangeable

Learn what Class 10, Class 20 and Class 30 mean on motor overload relays, how motor starting time affects trip-class selection, and why increasing the overload setting is not the right fix for nuisance trips.

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September 19, 2026 · 15 min read

Shunt Trip vs Undervoltage Release: Choosing the Right Circuit Breaker Accessory

Learn the difference between shunt trip and undervoltage release accessories, how each opens a circuit breaker, where control voltage comes from, and what to check before specifying one.

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September 18, 2026 · 10 min read

Control Transformer Sizing: Why Adding Up Coil Ratings Is Not Enough

Learn how to size an industrial control transformer using primary and secondary voltage, sealed VA, inrush VA and simultaneous loads—and why adding coil wattages alone can lead to control-voltage problems.

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September 17, 2026 · 9 min read

MCCB Trip Units Explained: Thermal-Magnetic vs Electronic Protection

Understand thermal-magnetic and electronic MCCB trip units, including overload, short-time, instantaneous and ground-fault functions, plus what to check before specifying a breaker.

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September 16, 2026 · 10 min read

Current Transformer Selection: Why the CT Ratio Is Only the Starting Point

Learn how to select a current transformer for industrial panels, including CT ratio, 1A vs 5A secondary, burden, accuracy class, conductor size and safe secondary wiring.

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September 15, 2026 · 10 min read

Soft Starter vs Star-Delta Starter: Choosing the Right Starting Method for an Industrial Motor

Compare soft starters and star-delta starters for three-phase motors. Learn how they affect starting current, torque, mechanical stress, panel design and motor selection.

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September 14, 2026 · 9 min read

Power Factor Correction Capacitor Banks: What They Do and When an Industrial Site Needs One

Learn how capacitor banks improve power factor, reduce reactive current, and free electrical system capacity, plus what to check before selecting PFC equipment.

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September 13, 2026 · 10 min read

MPCB vs MCB: Why Motor Protection Needs More Than an Ampere Rating

Learn how a motor protection circuit breaker differs from a standard MCB, how overload and short-circuit protection work, and what to check before selecting motor protection.

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September 12, 2026 · 9 min read

Inductive Proximity Sensors: What to Check Before Buying or Replacing One

Learn how inductive proximity sensors detect metal without contact, what PNP and NPN outputs mean, and how sensing distance, target material and flush mounting affect industrial sensor selection.

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