Description
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
| Model | ATO-SZJB100A-D | ATO-SZJ100A |
| Contact Form | Normally Closed (NC) | Normally Open (NO) |
| Coil Rated Voltage (DC V) | 12V, 24V, 36V, 48V, 60V, 72V, 84V, 120V, 150V, 220V | 12V, 24V, 36V, 48V, 60V, 72V, 84V, 120V, 150V |
| Contact Rated Voltage (DC V) | ≤60V | |
| Contact 48V Circuit Rated Load Current (DC-1) | 100A | |
| Main Contact Contact Coltage Drop Under 100A Load | ≥80mV | |
| Cooling pull-in voltage (V), (20±5)℃ | ≥70% | |
| Cooling release operating voltage (V), (20±5)℃ | ≥35%, ≤5% | ≥40%, ≤5% |
| 40℃ Coil Operating Voltage Range | 0.8-1.2Us | |
| Power-on Action Time | 10ms | 12ms |
| Power-off Release Time | 25ms | 8ms |
| Maximum Bounce Time of Contact Connection | 10ms | |
| Maximum Bounce Time of Contact Disconnection | 3ms | |
| Insulation Resistance | 20MΩ | |
| Dielectric Strength | 50Hz/60Hz 1000VAC 1minute | |
| Maximum Breaking Capacity of Main Contact (Power on for 5ms) | 800A/5ms at 48V/DC | 600A/5ms at 48V DC |
| Coil Power Consumption (W) | 5-10 | Start: 120-170, Hold: 3-8 |
| Coil Temperature Rise (K) | ≤80 | ≤40 |
| Terminal Temperature Rise (K) | ≤65 | |
| Electrical Life | 20000 times | |
| Mechanical Life | 300,000 times | |
| Work Specifications | Continuous | |
| Contact Material | Silver Alloy | |
| Load Terminal Type | M6 Screw | |
| Coil Terminal Type | M4 Screw | |
| Auxiliary Contact Rated Load (Optional) | 2A/48V DC, 5A/24V DC, One Open and One Closed | |
| Testing Agency Certification | CCC, CE, FCC, RoHS |
Load Characteristic Curve
Installation Dimension Diagram
Wiring Diagram & Temperature Rise Curve Graph
Mechanical Capabilities and Usage Environment
| Contact Terminal M8 Tightening Torque (Nm) | ≯9.0 is appropriate |
| Coil Lead-out M4 Tightening Torque (Nm) | ≯1.2 is appropriate |
| Ambient Temperature | -25~+70℃ |
| Relative Humidity | +20℃ 98% |
| Vibration Frequency at Fixed Location | 3G, 1～50Hz, amplitude 0.5mm |
| Impact | (60～100) times/min, acceleration ≤4g |
| Altitude | 2000 meters |
| Installation Direction | Arbitrary |
| Protection Level | IP40 (equivalent to IEC60947) |
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.
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