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Lead Contents

General-purpose Relay: Types of Loads

FAQ No. FAQ02165

Primary Contents

Question

What types of load are there (resistive loads, inductive loads, lamp and capacitor loads)?

Answer

The load types and their characteristics are as follows.

1. Resistive Loads

Nichrome heaters and other loads to which the same current continues to flow when voltage is applied

2. Inductive Loads

Motors, solenoids, and other loads with inrush current

3. Lamp and Capacitor Loads

Loads with inrush current even larger than with inductive loads

AC Loads and Inrush Current:

Type of loadRatio of inrush current to
steady-state current
Waveform
Solenoid
Approx. 10
Incandescent bulb
Approx. 10 to 15
Motor
Approx. 5 to 10
Relay
Approx. 2 to 3
Capacitor
Approx. 20 to 50
Resistive load
1

DC Loads and Inrush Current: