100A DC Contactor, 12V/24V/48V

The 100A contactor, normally open (NO) or normally closed (NC) contact form, has been designed for direct current loads, particularly for electric vehicles, telecommunication equipment, car batteries, trains, ships, and electronic control systems.

Features

• The DC contactor has the characteristics of small size, large load capacity, long service life and simple maintenance, and is very popular among users.
• 100 amps contactor complies with the requirements of the ministry standards JB2286-78, JB3974-85, YD/585-92, YD/T512-92. It has been tested in the factory and by relevant testing units and meets the requirements of the ministry standards. It has been used by users for many years to satisfy users to the maximum extent. Needed, reliable quality.
• 100A DC contactors are suitable for electric forklifts, battery trucks, tractors, excavators, brick making machines, cleaning vehicles, automotive air conditioners, communication power supplies, switch control of electronic control circuits of uninterruptible power supplies, electroplating power supplies and other systems.

Specifications

Load Characteristic Curve

Installation Dimension Diagram

Wiring Diagram & Temperature Rise Curve Graph

Mechanical Capabilities and Usage Environment

Tips: Contactor series and parallel connection

Many power consumption equipment are single-phase loads, therefore, several poles of the multipole contactor can be used in parallel, such as the electric resistance furnace, and welder transformer. When several poles are used in parallel, a small-capacity contactor can be selected. However, it has to be noticed that the heating current of the parallel contactor is not completely proportional to the number of parallel poles. Because the resistance value of moving and static contact loops may not be equal, thus the flowing current may not the averagely distributed. Therefore, the current could only be increased by 1.8 times for bipolar parallel and by 2～2.4 times for triode parallel.
Moreover, various polar contacts can't connect or disconnect at the same time after a parallel connection, so the connection and breaking ability can't be improved.
Sometimes, several contacts of the contactor can be used in series. Due to the increase of contact fracture, the arc is divided into many segments, thus improving the arc extinguishing ability and accelerating arc quenching. When several contactors are connected in series, the working voltage could be enhanced, but it can’t exceed the rated insulation voltage. Agreed heating current and rated working current of the contactor would not change after a series connection.