WTAIELE

AC Contactor

AC contactors from 6 A to 410 A: CJX2 standard 9-95 A, CJX2-K miniature 6-16 A, CJX2N economic, CJX2D new type, CJX2-D and CJX2-F high-ampere frames to 410 A, WTH8 modular and definite-purpose ranges. 3- and 4-pole, AC and DC coils, CE and CCC marked.

AC Contactor products

CJX2-6504 4P AC Contactor 65A

CJX2-6504 4P AC Contactor 65A

Rated current: AC Contactor 65A rated 65A at AC-3 380/400V, 42A at 660/690V. Pole configuration: 4P, in 4NO (CJX2-650404) or 2NO+2NC (CJX2-650408) contact forms. Motor rating: 30kW at 380/400V AC-3, 37kW at 660/690V AC-3. Coil options: 24V, 36V, 110V, 220V

CJX2-2504 4P AC Contactor 25A

CJX2-2504 4P AC Contactor 25A

Rated current: AC Contactor 25A rated 25A at AC-3 380/400V, 18A at 660/690V. Pole configuration: 4P, in 4NO (CJX2-250404) or 2NO+2NC (CJX2-250408) contact forms. Motor rating: 11kW at 380/400V AC-3, 15kW at 660/690V AC-3. Coil options: 24V, 36V, 110V, 220V

Send the Motor Data, Get the Model Back

Send the motor kW, supply voltage and coil voltage. You get the frame, coil code, overload relay and auxiliary block within 24 hours, with the terminal layout for your panel.

AC CONTACTORS

AC Contactors from 6 A to 410 A for Motor and Power Switching

An AC contactor is a coil-operated switch: energise A1 and A2, the electromagnet pulls the armature in, and the main contacts close. The coil runs on AC, which is why the shading ring on the pole face keeps the magnet from chattering at every zero crossing.
WTAIELE stocks eight families from 6 A to 410 A. CJX2-K covers 6 A to 16 A for tight panels, CJX2 and CJX2N cover 12 A to 95 A, CJX2D follows the LC1D footprint, and CJX2-D and CJX2-F reach 410 A. CJ19 switches capacitor banks and WTH8 fits DIN-rail boards.
Sizing starts with the motor current at AC-3, not the nameplate kW: a 5.5 kW motor at 380 V draws about 11.5 A, so a 12 A frame is the starting point and an 18 A frame is the safer choice in a hot panel. Units carry CE and CCC marking.
AC Contactors from 6 A to 410 A for Motor and Power Switching

Choosing the Right AC Contactor

Match the frame to the motor, then match the coil to the control circuit. The two numbers that decide the order are the AC-3 current and the coil voltage.
Motor at 380 V Approx. current CJX2 frame Note
2.2 kW about 5 A CJX2-K 12 A Small panel, DIN rail
4 kW about 8.5 A CJX2-1210 1NO auxiliary
5.5 kW about 11.5 A CJX2-1810 or -2510 Allow for panel heat
11 kW about 22 A CJX2-2510 Add overload relay
22 kW about 42 A CJX2-5011 1NO+1NC fitted
45 kW about 85 A CJX2-9511 Top of the CJX2 range
90 kW about 170 A CJX2-D205 High-ampere frame

Wiring and coil

  • A1 and A2 are the coil terminals. The coil voltage is marked on the front; a 220 V coil on a 380 V control circuit will burn out in minutes.
  • Main contacts run L1/L2/L3 to T1/T2/T3. Auxiliary 13/14 is normally open and 21/22 is normally closed.
  • The Z suffix means a DC coil. Those frames are ordered for battery and solar control circuits, not for AC panels.
Send the motor kW, the supply voltage and the coil voltage. We return the frame, the overload relay and the auxiliary block for the panel.
SIZING A CJX2

The Four Numbers That Decide a Contactor Order

kW Is Not the Rating

A 5.5 kW motor draws about 11.5 A at 380 V. Size on AC-3 current, then add margin for the heat inside the panel.

Order the Coil With the Frame

A 220 V coil on a 380 V control circuit fails in minutes. The coil code is part of the model, not an afterthought.

Auxiliary Blocks Set the Wiring

1NO+1NC covers a holding circuit; 2NO+2NC is what a PLC status input and an interlock need together.

Where CJX2 Stops

Above 95 A the CJX2-D and CJX2-F frames take over, with heavier terminals and a different mounting footprint.
COMMON QUESTIONS

Frequently Asked Questions

Three signs: the coil is energised but the contacts do not close, usually a burnt coil or a stuck armature; the contacts close but the motor does not run, usually pitted or welded contacts; or the contactor chatters, which points to low control voltage or a broken shading ring. Measure the coil across A1 and A2, then check continuity across the main contacts with the power off.

CONTACT US

Start Your Electrical Project Today

Send your application, voltage, certifications and quantity to this electrical protection manufacturer. We reply with a quotation within 24 hours.
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  • Plant pricing with no intermediaries
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  • One order owner from quotation to delivery