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Electromagnetic Contactor is a single pole heavy duty contactor designed to be used on traction vehicles. In order to work efficiently both AC and DC circuits, the contactors are equipped with arc blow-out circuit.
CONTACTORS ELECTRO-MAGNETIC
for Traction Vehicles
Technical Features
- Used for Higher voltage, upto 3000V and 50A AC/DC application. Having single pole normally open contacts.
- Compact and space saving wall mounting.
- Low maintenance and reliable operations under extreme condition.
- Contact movement designed for self cleaning action.
- Contacts are easily inspected and replaced.
- Independent of polarity.
- Arc extinguisher helps to break down the arc voltage and to cool the arc effectively.
- Operating coil designed for voltage tolerance of -30% to +25%.
- All non metallic components are of fire retardant self –extinguishing materials.
- Option of upto 4 (NO or NC) auxiliary contacts, customization possible.
- Sturdy structure and a long mechanical life (over 5 million operations).
Applications
Used for traction vehicle equipments like Discharging Resister, Heating System, Auxiliary Equipments, Traction Converters, etc.
Technical Specifications
Main Circuit
| Number of poles & nature of contact | Single pole normally open contact |
|---|---|
| Rated voltage | 3000V DC |
| Permissible max. service voltage | 4500V DC |
| Rated current | 50A |
| One hour current | 55A |
| Short time current | (5 minute) 75A |
| Closing current limit | 250A |
| Interrupting current limit (ohmic) |
At 4500V DC : 80A At 3600V DC : 100A At 1800V DC : 150A At 3600V AC : 200A |
| Closing time | 80-100 ms |
| Interrupting time |
Without protective device : 8-12 ms With parallel connected varister to the coil : 14-20 ms With parallel connected diode to the coil : 100-200 ms |
| Weight | 5.8 kg (approx.) |
| Mounting | Vertically on a wall |
| Mechanical operation switching rate | 2 operations per second |
| Mechanical life | 5 million operations |
| Operating Temperature | -40°C to +70°C |
| Standards | IEC 77, IEC158-1, IS11731(Part 1 & 2) |
Control Circuit
| Mechanism Construction | Electromagnet with return springs |
|---|---|
| Rated control voltage | 110V DC |
| Service voltage | 0.7 to 1.25 UN |
| Power consumption at nominal control voltage | 20~26W (approx.) |
| Auxiliary Contacts | |
| Nature of contacts | 4 (2NO & 2NC) can be customized |
| Rated voltage | 220V |
| Rated current | 6A |
| Max. closing current | 25A |