Panel heat, terminals, clearances, creepage, and enclosure ratings
Calculate contact power loss, voltage drop, daily heat energy, and optional temperature-rise estimate from current and contact resistance.
Open calculatorEstimate IEC 60664-1 minimum clearance through air and creepage along an insulating surface from voltage, overvoltage category, pollution degree, CTI group, insulation level, and altitude.
Open calculatorCalculate enclosure internal temperature, required fan airflow, or active cooling capacity from cabinet size, heat load, ambient conditions, insulation, solar load, and protection requirements.
Open calculatorAdd breaker, contactor, drive, power-supply, transformer, and miscellaneous losses to estimate total cabinet heat load.
Open calculatorDecode IEC IP ratings, cross-reference NEMA enclosure Types to IP protection, and screen enclosure Types from location, water, dust, corrosion, oil, ice, and immersion exposure.
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