Miniature auxiliary contactor, TeSys K, 4NO, 24VDC coil, screw terminals CA3KN40BD3

Auxiliary contactor – reliability and compact size in load control

This miniature auxiliary contactor from the TeSys K series by Schneider Electric is a key element in electromagnetic load control systems. Designed to operate at 24V DC, it offers reliable switching of control circuits. Its compact design (only 45 mm wide) allows for easy integration even in tight spaces. This contactor is particularly useful in applications requiring frequent switching, thanks to its high operating frequency of up to 180 cycles per minute.

Design and application

The CA3KN40BD3 contactor is equipped with four normally open (NO) contacts, making it an ideal solution for controlling various loads. Screw terminals ensure secure and durable wire connections. The ability to mount on a 35 mm DIN rail or with screws increases installation flexibility. Thanks to the operating voltage in the range of 690…690 V DC, this contactor performs well in a wide spectrum of industrial applications. The rated current of 10A provides sufficient performance for most standard applications.

Features and benefits for professionals and users

• High reliability: Ensured by a solid construction and compliance certificates with international standards (IEC, UL, CSA, CCC, EAC).
• Compact dimensions: Allow mounting in limited space, which translates to saving space in control cabinets.
• Easy installation: Mounting on a DIN rail or with screws simplifies and speeds up the installation process.
• Safety: Compliance with safety standards guarantees safe operation of the device.
• Durability: Adapted to operate in a wide range of ambient temperatures (-25/+50°C), ensuring long-lasting and trouble-free operation.
• Ecology: Product marked with the Green Premium label, which demonstrates its compliance with environmental protection requirements (RoHS/REACh).
• Secure connections: Screw connection ensures a stable connection of wires, minimizing the risk of circuit interruptions.
• Inrush current: The rated inrush current is 0.005 A, which affects the efficiency of the contactor in various applications.