TeSys Deca electronic relays

TeSys Deca electronic overcurrent relays from 0.3 A to 38 A can be directly mounted beneath TeSys D contractors (up to LC1D38, width 45 mm) to prevent over-currents caused by overloads or mechanical jamming.

• Screw clamp or lug connections
• External 24 to 230 V AC power supply
• Manual or automatic reset
• Protection functions:
  - Overcurrents due to overload or mechanical jamming: starting and steady state operation overtorque monitoring
  - Can be used for torque surge protection
  - Specific protection for locked rotors
  - Specific protection for phase failure
• Current threshold adjustment using 2 separate time settings (starting and trip in steady state operation)
• Selection of 3-phase or single-phase operation
• Diagnostics via 2 LED indicators (starting, overtorque, rotor locked and phase failure)
• Auxiliary contact: 1 C/O

Machine protection combined with motor starter

TeSys Deca electronic overcurrent relays (or overtorque protection relays) assure optimal protection for motors and other mechanical devices, such as gear boxes.

• Compact (45 mm wide) for easy integration into motor starter functions
• Reduces production loss and associated downtime
• Simple setting and signaling features

TeSys Deca electronic overcurrent relays do not have thermal memory and can be used as specific motor protection in the case of severe duty applications, such as machines with long starting times and frequent starting. The solution is suitable for a variety of motor control applications in industry, infrastructures and buildings, including:

• Machines with high resistive torque
• High inertia machines
• Machines with high risk of jamming during steady state operation