| Function |
Switches high current loads |
Switches low current or control circuits |
| Current Rating |
Typically 10A to 1000A (or) more |
Usually < 10A |
| Application |
Motors, lighting & heating circuits |
Control panels, automation systems & signal switching |
| Size |
Larger |
Smaller |
| Arc Suppression |
Has arc chutes for extinguishing arcs |
Usually not equipped with the arc suppression |
| Auxiliary Contacts |
Common for control & interlocking circuits |
Present but fewer |
| Durability |
Designed for frequent switching under the electrical load |
Less rugged for heavy-duty switching |
| Cost |
More expensive |
Less expensive |
