20A, 30A, 55A 3 Poles 220V AC Contactor
Application:
SFC series AC contactor (hereinafter contactor) is suitable for using in the circuits up to the rated voltage 690V AC 50 HZ or 60 HZ , rated insulation voltage of 690V, and the rated current from 9A to 475A at the rated working voltage 380V in the AC-3 application type, and is used for long distance connection and breaking of the circuit. Contactor is suitable in frequent start and control of AC motor.
This series contactor complies with GB 14048, IEC60947-4-1
Main parameters and Technical Performance:
| Type | SFC30 | SFC31 | SFC32 | SFC33 | SFC34 | SFC35 | ||
| Rated heating current (A) | 20 | 20 | 30 | 30 | 55 | 55 | ||
| Rated insulation voltage (V) | 690 | |||||||
| Rated impact withstand voltage (KV) | 6 | |||||||
| Rated making capacity | 10le | |||||||
| Rated breaking capacity | 8le | |||||||
| Poles | 3 | |||||||
| Auxiliary contact | NO/NC | NO/NC | NO+NC | NO+NC | NO+NC | NO+NC | ||
| Short-time withstand current(A) | 10S | 72 | 96 | 128 | 176 | 256 | 304 | |
Rated working current(A) |
380V | AC-3 | 9 | 12 | 16 | 22 | 32 | 38 |
| AC-4 | 3.3 | 4.3 | 7.7 | 8.5 | 15.6 | 18.5 | ||
| Controllable motor power (KW) 50Hz |
AC-3 | 220V | 2.4 | 3.3 | 4 | 5.5 | 8.5 | 11 |
| 380V | 4 | 5.5 | 7.5 | 11 | 15 | 18.5 | ||
| 500V | 5.5 | 7.5 | 9 | 11 | 21 | 25 | ||
| 660V | 5.5 | 7.5 | 11 | 11 | 23 | 23 | ||
| AC-4 | 380V | 1.4 | 1.9 | 3.5 | 4 | 7.5 | 9 | |
| 660V | 2.4 | 3.3 | 6 | 6.6 | 13 | 15.5 | ||
| Operation frequency (times/h) | AC-3 | 1200 | 1200 | 1200 | 1200 | 600 | 600 | |
| AC-4 | 300 | 300 | 300 | 300 | 300 | 300 | ||
| Electrical life (10000/times) | AC-3 | 100 | 100 | 100 | 100 | 80 | 80 | |
| AC-4 | 20 | 20 | 20 | 20 | 20 | 20 | ||
| Mechanical life (10000/times) | 1000 | 1000 | 1000 | 1000 | 800 | 800 | ||
| Attracting Coil working voltage tolerance (AC) | (85%～110%)Us +40℃ | |||||||
| Attracting Coil power consumption | Keeping (VA) | 10 | 10 | 10 | 10 | 12.1 | 12.1 | |
| Pick-up(VA) | 68 | 68 | 68 | 68 | 101 | 101 | ||
| Auxiliary contact conventional thermal current(A) | 10 | 10 | 10 | 10 | 10 | 10 | ||
| Auxiliary contact rated insulation voltage (V) | 690 | 690 | 690 | 690 | 690 | 690 | ||
| Auxiliary contact rated working current (A) | AC-15 | 380V | 6 | 6 | 4 | 4 | 4 | 4 |
| 220V | 10 | 10 | 6 | 6 | 6 | 6 | ||
| DC-13 | 110V | 0.9 | 0.9 | 1.14 | 1.14 | 1.14 | 1.14 | |
| 220V | 0.45 | 0.45 | 0.48 | 0.48 | 0.48 | 0.48 | ||
Working and Installation Condition:
♦ Ambient air temperature: -5℃--+40℃ and average not more than +35℃ within 24 hours;
♦ Altitude: ≤ 2000m;
♦ Air condition: when the highest temperature is +40℃, the air relative humidity is not up to 50%, but the higher humidity is allowed at lower temperature. Like, 90% humidity at 20℃. The condensate dew should be considered when at lower temperature;
♦ Pollution degree: Class 3
♦ Installation category:III
♦ Protection degree: IP20
♦ Installation condition: the gradient angle between installation side and vertical side should not be more than ±5℃
♦ Impact and vibrattion: the contactor must be installed and operate under the circumstances of no obvious shaking, impact and vibration.
Structure characteristic:
♦ Safety design against electric shock, more safe and reliable
♦ The feature of small volume, light weight, arcing chamber is enclosed, small electric arcing distance
♦ The arc-extinguishing construction is novel, abrasion of the contacts is small, with a long electric life
♦ The operation of the magnet that many advantages such as good reliability, resistant impact, tiredness and so on significant advantages
Appearance and Installation Dimension:
Installation dimension:
| Type | A max | B max | C max | a | b | ∅ |
|
SFC30 |
46 | 79 | 87 | 35 | 60 | 4.8 |
| SFC31 | 46 | 79 | 87 | 35 | 60 | 4.8 |
| SFC32 | 46 | 89 | 100 | 35 | 75 | 4.8 |
| SFC33 | 46 | 89 | 100 | 35 | 75 | 4.8 |
| SFC34 | 56 | 105 | 110 | 45 | 75 | 5 |
| SFC35 | 56 | 105 | 110 | 45 | 75 | 5 |
