COMPONENTS / PARAMETER SIZING

Contactor Selection

Check motor operating current, utilization category and control coil.

Input Parameters

Edit the example values. Results update as you type.

Motor Line Voltage U

Enter circuit voltage for single phase and line voltage for three phase.

Motor Shaft Output Power P

Known Parameters

Operating Current I

Utilization Category

Coil Voltage

Results

Reference Rated Operational Current: 32 / 38A
Motor Operating Current: 30A
Utilization Category: AC-3
Control Coil: 24 V DC

Formula

Iₑ (at the utilization category and Uₑ) ≥ Iᴮ

Substitution

Iₑ（AC-3，380 V）≥ 30 A

Calculation Steps

Uses the known or imported motor operating current.
Screen for utilization category AC-3; cross-check the manufacturer's power rating for a 15 kW motor at this voltage.
Select coil 24 V DC; verify NO / NC auxiliary contacts for self-holding, interlocking and feedback.

Result Explanation

Reference ratings are screened by AC-3 current. Verify manufacturer ratings at the actual voltage, load and operating frequency.

Product Candidates

Parameter-matched candidates

Schneider · TeSys D / DecaOfficial source

LC1D32BD

3P · AC-3 32 A · 15 kW @380–400 V · 24 V DC coil

Rated current covers the required current
Motor power rating has been checked for the voltage covered by this library

Rated margin above screening requirement: 6.7%

Schneider Electric · LC1D32BD data sheet ↗

Verified 2026-11-05

Schneider · TeSys D / DecaOfficial source

LC1D38BD

3P · AC-3 38 A · 18.5 kW @380–400 V · 24 V DC coil

Rated current covers the required current
Motor power rating has been checked for the voltage covered by this library

Rated margin above screening requirement: 26.7%

Schneider Electric · LC1D38BD data sheet ↗