Shenzhen Zhenhua Qunying Electronics CO. ,Ltd.
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Low Voltage Electromagnetic Normal Closed Single Coil 50 Ampere 48v Direct Current Contactor
1. Summary of product
JQ-50D(B)/48-48AW DC contactor has a set of bridge normally closed contactors with load current up to 50A. Accord with GB1408.4-2010/IEC60947-4-1:2009 Ed.3.0.MOD, YD/T585-2010. Suitable for communication power equipment electrical control device.
2. Parameter table
| Parameter | Coil voltage of contact circuit |
| Voltage range | 6-220v |
| Coil power | 5-8w |
| Normal state | Normally closed |
| Main rated load current of contact circuit | 50A |
| Rated voltage of contact circuit | 6-80v |
| Sucking time | 40ms |
| Releasing time | 30ms |
| Mechanical life | 100000times |
| Electric life | 1000times |
| Coil resistance | 603.6-708.4Ω |
3. Usage condition
| Ambient temperature: work | - 40 ~ + 60; storage and transportation: - 40 ~ + 70 |
| relative humidity | 98% at 40 |
| altitude | not more than 2000 meters |
| Vibration | 10-55hz |
| amplitude | 0.35mm |
| impact | 30m/s2 |
4. Standard,safty and environmental protection
(1) Comply with GB14048.4-2003 / IEC60947-4-1:2000 low voltage switching equipment and control equipment electromechanical contactor and motor starter standard；
(2) YD/T585-2010 General credit distribution equipment technical conditions.
5. Order mark standard
| JQ | DC Ccontactor |
| 100 | Rated load 100A |
| D | Normally closed |
| (B) | Communication power |
| B | Double coil |
| 48 | The contact voltage |
| 48 | The contact voltage |
| W | Bending mounting plate |
6. Current actual production parameter
| No. | requirements | unit | 24 | 48 | 54 | 60 |
| 1 | Coil resistance | Ω | 82.6 | 323 | 375 | |
| Coil consuming resistance | W | 7 | 7.1 | 7.8 | 5.1 | |
| Coil resistance error | Ω | ±8% | ±8% | ±8% | ||
| 2 | Action features | |||||
| Cold suction voltage:45～75%Ue | V | 10.8～18 | 21.6～35 | 24.3～40.5 | ||
| Cold release voltage 5%Ue～40%Ue | V | 1.2～9.6 | 2.4～19.2 | 2.7～21.6 | ||
| Contact pressure drop of main contact | mv | ≤80 | ≤80 | ≤80 |
7. JQ-50D(B)/48-48AW current curve
8. The circuit diagram of the configuration, installation and terminal
9. Our main products
10. DC Contactor application range