Control & Protection Components
TeSys Motor Control Overview
Schneider Electric’s TeSys family delivers proven motor control, protection, and monitoring across industrial and commercial applications. The portfolio balances robust hardware, compact modularity, and digital-ready monitoring, making it suitable for everything from simple starters to networked motor management.
Key Strengths
- Heritage and reliability — decades of field-proven designs and the original contactor lineage.
- Comprehensive protection — thermal, electronic overload, short‑circuit and phase‑loss protection options.
- Modularity — contactors, overload relays, auxiliary contacts, and accessories that snap together for fast assembly.
- Monitoring and diagnostics — electronic protection units and add‑ons that report motor health and energy use.
- Connectivity — options to integrate with EcoStruxure and common industrial networks for predictive maintenance and analytics.
Typical Components and Where They Fit
| Component | Function | Common Use |
|---|---|---|
| Contactor | Main switching device | Motor start/stop |
| Overload relay | Thermal/electronic motor protection | Motor thermal protection |
| Motor protection circuit breaker | Combined short‑circuit and overload protection | Direct motor feeders |
| Auxiliary contact block | Adds NO/NC contacts | Interlocks, signalling |
| Coil suppressor module | Reduces EMI and coil arcing | Noisy control circuits |
| Electronic motor protector | Advanced monitoring and trip functions | Critical motors, remote diagnostics |
Integration and Smart Capabilities
- Local intelligence: Electronic protectors provide adjustable trip curves, event logs, and fault codes.
- System integration: Gateways and communication modules link TeSys devices to PLCs, SCADA, and EcoStruxure for centralised monitoring.
- Energy and uptime optimisation: Real‑time motor data enables condition‑based maintenance and energy tracking.
Practical Selection Checklist
- Motor rating: Match device to motor full‑load current and starting characteristics.
- Supply type: Confirm AC/DC coil voltage and system voltage class.
- Protection level: Choose thermal vs electronic overload based on precision and diagnostics needs.
- Coordination: Ensure upstream breakers and fuses coordinate with motor protection for selective tripping.
- Environment: Consider IP rating, ambient temperature, and vibration.
- Connectivity needs: Select communication modules if remote monitoring or integration is required.
Installation and Maintenance Best Practices
- Correct sizing: Verify continuous current, starting current, and service factor before installation.
- Proper wiring: Use recommended cable sizes and torque values for terminals.
- Suppression: Fit coil suppressors where contact bounce or EMI is a concern.
- Periodic checks: Inspect contacts, measure coil resistance, and verify trip settings annually or per operating hours.
- Firmware and configuration: Keep electronic protectors’ firmware and configuration backed up and documented.
