40A Din Rail Ac Magnetic Contactor 3 Phase Electrical 3 Poles
Application:
SC 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 current up to 95A, for making, breaking, frequently starting & controlling the AC motor. Combined with the thermal relay, it becomes the electromagnetic starter for protecting the overload circuits.
This series contactor complies with GB 14048, IEC60947-4-1
Model and Implication:
Main parameters and Technical Performance:
| Type | SC25 | ||
| Rated heating current (A) | 40 | ||
| 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 | ||
| Short-time withstand current(A) | 10S | 200 | |
| Rated working current(A) | 380V | AC-3 | 25 |
| AC-4 | 8.5 | ||
| 660V | AC-3 | 18 | |
| AC-4 | 4.4 | ||
| AC-3 capacity of phase 3 squirrel-cage motor (AC-3) KW |
220V | 5.5 | |
| 380V | 11 | ||
| 660V | 15 | ||
| Operation frequency (times/h) | Electrical life | AC-3 | 600 |
| AC-4 | 300 | ||
| Mechanical life | 3600 | ||
| Electrical life (10000/times) | AC-3 | 100 | |
| AC-4 | 20 | ||
| Mechanical life (10000/times) | 1000 | ||
| Equipped fuse type | RT16-40 | ||
| Rated control supply voltage Us(V) | 50/60Hz | 12~480 | |
| Operation range | Pull-in | (85%~110%)Us +40℃ | |
| Releasing | (20%~75%)Us -5℃ | ||
| Ac coil average power(VA) | Start | 110 | |
| Keeping | 11 | ||
| Power efficiency class | class 3 | ||
| Thermal loss(W) | 3~4 | ||
| Actuation time(ms) | Close | 12~25 | |
| Break | 5~20 | ||
| Main circuit wiring | flexible wire without cold pressing terminal (㎟) |
1 stick | 1.5～10 |
| 2 sticks | 1.5～6 | ||
| flexible wire with cold pressing terminal (㎟) |
1 stick | 1～6 | |
| 2 sticks |
1～4 |
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| Hard wire (㎟) | 1 stick | 1.5～6 | |
| 2 sticks |
1.5～6 |
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| Fastening screw size | M4 | ||
| Tightening fastening torque (N.m) | 1.2 | ||
| Control loop wiring | flexible wire without cold pressing terminal (㎟) |
1 stick | 1～4 |
| 2 sticks | 1～4 | ||
| flexible wire with cold pressing terminal (㎟) |
1 stick | 1～4 | |
| 2 sticks | 1～2.5 | ||
| Hard wire (㎟) | 1 stick | 1～4 | |
| 2 sticks | 1～4 | ||
| Fastening screw size | M3.5 | ||
| Tightening fastening torque (N.m) | 0.8 |
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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:
It can be installed with auxiliary contacts block, time relay and current-limited contacts block, and thermal relay, then to be other derivative products;
This series contactor has small volume, light weight, less power loss, long life and safe and reliability etc;
The contactor can be equipped with 1NO auxiliary contact or 1NC auxiliary contact(less than 32A), and 1NO auxiliary contact+1NC auxiliary contact(more than 40A). In addition, it can be equipped with F4 auxiliary contactor block (2blocks or 4blocks);
In addition to use screw to install, contactor can be tightened with the standard installing rail of 35mm (sc09~95) and the standard installing rail of 75mm(SC40~95)
Installation dimension:
| A max | B max | C max | a | b | ∅ |
| 57 | 86 | 95 | 40 | 48 | 4.5 |
