Advanced Electrical Calculator - Design Calculators

Advanced Electrical Breaker Sizing and Selection Tool

This powerful calculator assists in sizing circuit breakers and determining their thermal and magnetic trip settings for a wide range of industrial applications, adhering to international electrical standards like IEC and NEC. It provides detailed calculations and recommendations for optimal system protection and coordination.

Motor Circuit Breaker Calculation

Motor Power Unit

Motor Power

Motor Type

Motor Starting Method

System Voltage Type

System Voltage (V)

Power Factor (PF)

Motor Efficiency (%)

Cable Insulation Type

Installation Method

Ambient Temperature (°C)

Number of Current-Carrying Conductors

Cable Length (m)

Conductor Material

Assumed Conductor Size (mm²)

Overload Protection Factor (%)

Breaker Type

Available Short Circuit Current (kA)

Device Coordination Strategy

PCC/MCC Incomer Breaker Calculation

Total Connected Load Unit

Total Connected Load

Demand Factor (%)

Diversity Factor (%)

Future Expansion (%)

System Voltage (V)

System Voltage Type

Power Factor (PF)

Breaker Type

Available Short Circuit Current (kA)

Transformer Breaker Calculation

Transformer kVA Rating

Primary Voltage (V)

Secondary Voltage (V)

Transformer Impedance (Z%)

Transformer Connection Type

Breaker Type (Primary/Secondary)

Calculation Results

Motor Circuit Breaker Results

PCC/MCC Incomer Breaker Results

Transformer Breaker Results