Square D TeSys SK Control Relay – Model CA3SK20BD
The Square D CA3SK20BD is a TeSys SK series control relay featuring two normally open (NO) contacts and a 24V DC standard coil. With a 4-pole configuration and screw clamp termination, it is designed for integration into modern DC control and automation systems.
Key Specifications
- Series: TeSys SK
- Contacts: 2 NO (Normally Open)
- Poles: 4
- Maximum Voltage: 690V AC
- Coil Voltage: 24V DC (Standard)
- Connection Type: Screw Clamp Terminals
- Manufacturer: Square D (Schneider Electric)
- Model: CA3SK20BD
Features
- 2 NO contact configuration for standard control circuit applications
- 4-pole design for additional switching flexibility
- 24V DC coil for compatibility with PLC and DC control circuit environments
- Screw clamp terminals for reliable, vibration-resistant wiring
- Rated to 690V AC for broad industrial applicability
Applications
Used in industrial automation panels, motor control circuits, and relay logic systems where two independent normally open contact paths are needed. Well-suited for interlocking, signaling, and auxiliary control functions in manufacturing and process control environments.





