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Built-in Surge Suppressors Contactor WC2SU

Type WC2SU-09 WC2SU-12 WC2SU-18 WC2SU-25 WC2SU-32 WC2SU-40 WC2SU-50 WC2SU-65 WC2SU-80 WC2SU-95
Main circuit characteristic
Poles 3P
Main contact 3NO
Rated insulation voltage(Ui)(V) 690V
Rated operating voltage(Ue)(V) AC220/230V; 380/400V; 660/690V
Rated thermal current(Ith), AC-1 20 20 32 40 50 60 80 80 100 125
 

 

Rated operation

current(le)(A)

 

 

 

 

 

 

 AC-3, 220/230V 9 12 18 25 32 40 50 65 80 95
AC-4, 220/230V 3.5 5 7.7 8.5 12 18.5 24 28 37 44
AC-3,

380/400V

 9 12 18 25 32 40 50 65 80 95
AC-4, 380/400V 3.5 5 7.7 8.5 12 18.5 24 28 37 44
AC-3, 660/690V 6.6 8.9 12 18 22 34 39 42 49 49
AC-4,660/690V 1.5 2 3.8 4.4 7.5 9 12 14 17.3 21.3
 

 

Rated operational

power(Pe)(kW)

 

 

 

 

 

 

 AC-3, 220/230V 2.2 3 4 5.5 7.5 11 15 18.5 22 25
AC-4, 220/230V 0.6 1.1 1.5 2.2 3 5.5 6 7.5 11 14
AC-3,

380/400V

 4  5.5  7.5  11  15  18.5  22  30  37  45
AC-4,

380/400V

  1.5  2.2  3.3  4  5.4  7.5  11  15  18.5  22
AC-3, 660/690V  5.5  7.5  10  15  18.5  30  33  37  45  45
AC-4,

660/690V

  1.1  1.5  3  3.7  5.5  7.5  10  11  15  18.5
Mechanical life(×10⁴ times)

 

 

 1000 1000 1000 1000 800 800 800 800 600 600
Electrical life

(x10⁴times)

 

 AC-3 100 100 100 100 80 60 60 60 60 60
AC-4 20 20 20 20 20 15 15 15 10 10
Frequency of

operation (time/h)

 

 AC-3 1200 1200 1200 1200 600 600 600 600 600 600
AC-4 300 300 300 300 300 300 300 300 300 300
Control circuit characteristics

 

 
Rated control

voltage(Us)

 

 

 50Hz 24V,36V,48V,110V,230V,380V,415V,440V
50/60Hz 24V,36V,48V,110V,230V,380V,415V,440V
Allowed control

circuit voltage

 

 Operation (85%~110%)Us
Release (20%~75%)Us
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Product Description About Us

Contactor is an automatic electromagnetic switch primarily used for frequently connecting or disconnecting AC/DC main circuits and high-capacity control circuits over long distances. It is widely used in electric drive systems, industrial automation control, building electrical systems, and other applications, serving as a core component for controlling loads such as motors, electric heaters, and lighting systems.

Core Functions:
1. Automatic On/Off: Magnetic force is generated by energizing an electromagnetic coil, driving the contacts to close or open.
2. Remote Control: Can be remotely operated via buttons, PLCs, relays, etc.
3. High Current Control: Capable of safely controlling high-current loads of hundreds of amperes.
4. Frequent Operation: Designed for frequent starts and stops, with a long lifespan (typically up to one million operations).

WC2SU Series ac contactors are used for controlling 3-phase motor circuits up to 69oV AC. These contactors are of the block type designwith 3 main poles. Built-in INO+INC auxiliary contact and surge suppression, resulting in installation time and cost savings.Compared with contactors using external surge suppressors, contactor products using builtin surge suppressors will have more reliableperformance and at the same time the surges are handled by the contactor itself and the surge never reaches the control circuit.

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