CA3KN403BD - Electric Contactor SCHNEIDER - Free user manual and instructions
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| Product Type | Contactor |
| Model | CA3KN403BD |
| Brand | Schneider Electric |
| Number of Poles | 3 poles |
| Rated Operational Current | 40 A (AC-3 at 400 V) |
| Coil Voltage | 230 V AC, 50/60 Hz |
| Dimensions (H x W x D) | 85 mm x 45 mm x 100 mm |
| Weight | 0.5 kg |
| Enclosure Protection Class | IP20 |
| Electrical Endurance | 1 million operations at rated current |
| Mechanical Endurance | 10 million operations |
| Mounting Type | DIN rail or screw mounting |
| Terminal Type | Screw terminals for wire up to 25 mm² |
| Auxiliary Contacts | 1 NO + 1 NC (integrated) |
| Operating Temperature Range | -25°C to +55°C |
| Storage Temperature Range | -40°C to +70°C |
| Environmental Standards | RoHS compliant, REACH compliant |
| Safety Standards | IEC 60947-4-1, UL 508 |
| Maintenance | Check contacts for wear; clean with dry cloth; periodic tightening of terminals |
| Spare Parts & Reparability | Coil, main contacts, and auxiliary contact blocks available for replacement |
Frequently Asked Questions - CA3KN403BD SCHNEIDER
What is the coil voltage of the Schneider CA3KN403BD contactor?
The coil voltage is 230 V AC at 50/60 Hz. Always verify the coil rating before connecting.
How do I wire the CA3KN403BD?
Connect the main circuit to the L1, L2, L3 terminals on the input side and the load to T1, T2, T3 on the output. The coil connections are A1 and A2 for the control voltage. Refer to the wiring diagram on the side of the contactor.
Can the CA3KN403BD be used for DC loads?
This contactor is designed primarily for AC loads. For DC applications, consult the derating curves in the technical datasheet.
What is the rated current of the CA3KN403BD?
The rated operational current is 40 A in AC-3 category at 400 V. For other categories, check the manual.
Does the CA3KN403BD have auxiliary contacts?
Yes, it comes with 1 normally open (NO) and 1 normally closed (NC) auxiliary contacts built-in.
What is the mechanical endurance of this contactor?
The mechanical endurance is 10 million operations, ensuring long life under normal use.
Can I replace the coil myself?
Yes, the coil is replaceable. Ensure you use a genuine Schneider coil with the same voltage rating. Disconnect power before replacing.
What are the dimensions of the CA3KN403BD?
The dimensions are approximately 85 mm height, 45 mm width, and 100 mm depth. It fits standard DIN rails.
Is the CA3KN403BD suitable for motor starting?
Yes, it is designed for motor starting applications up to 40 A in AC-3 duty. For higher inrush, consider a larger contactor.
How do I clean and maintain the contactor?
Regularly check for dust and dirt; clean with a dry cloth. Inspect contacts for pitting or wear. Tighten all terminals periodically as per the maintenance schedule.
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USER MANUAL CA3KN403BD SCHNEIDER
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Product information
Brand : SCHNEIDER
Model : CA3KN403BD
Category : Electric Contactor