Motor protection & control
Motor protection circuit breakers
Protect individual motor circuits as part of a coordinated starter.
Before selecting a model
- Motor full-load current
- fault level
- starter coordination
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COMPONENT SELECTION
Control components for the complete system.
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Explore motor control, signalling, protection, automation and energy management. Start with the function, then confirm the exact model with our team.
Family names follow the LOVATO Electric catalogue, reviewed 22 September 2026. This is a selection guide, not a stock list. Exact supply, compatibility, certifications and lead times require confirmation.
36 product families
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Motor protection & control
Contactors
Switch motors or other loads using the appropriate utilisation category.
Before selecting a model
- Load type and duty
- coil supply
- auxiliary contacts
Motor protection & control
Motor protection relays
Monitor overload conditions within the motor protection scheme.
Before selecting a model
- Motor current
- trip class
- reset strategy
Motor protection & control
Electronic and electromechanical starters
Build a starting arrangement around the machine and available supply.
Before selecting a model
- Motor terminals
- acceleration time
- starts per hour
Motor protection & control
Soft starters
Explore controlled starting for fixed-speed machinery.
Before selecting a model
- Starting torque
- load inertia
- bypass arrangement
Motor protection & control
Variable speed drives
Match motor speed to process demand where the application permits.
Before selecting a model
- Motor current
- load torque
- speed range and cooling
Motor protection & control
Solid state relays
Consider electronic switching for suitable repetitive loads.
Before selecting a model
- Load waveform
- heat dissipation
- leakage current
Control & signalling
Pushbuttons and selector switches
Define clear local commands and machine operating modes.
Before selecting a model
- Operator function
- contact blocks
- ingress protection
Control & signalling
Signal towers and beacons
Make machine status visible at the point of use.
Before selecting a model
- Required states
- visibility
- audible indication
Control & signalling
Limit, micro and foot switches
Detect movement or operator actions in the control sequence.
Before selecting a model
- Actuator travel
- contact action
- environment
Control & signalling
Safety devices
Discuss a verified safety function rather than choosing by appearance.
Before selecting a model
- Risk assessment
- required architecture
- validation plan
Control & signalling
Rotary cam switches
Arrange manual selection and changeover functions.
Before selecting a model
- Switching diagram
- load category
- panel mounting
Isolation & protection
Moulded case circuit breakers
Coordinate circuit interruption with cable and assembly requirements.
Before selecting a model
- Design current
- fault duty
- trip characteristics
Isolation & protection
Switch disconnectors
Plan an appropriate isolation point for equipment and maintenance.
Before selecting a model
- AC or DC duty
- pole arrangement
- locking requirements
Isolation & protection
Power distribution blocks
Organise conductor distribution inside the assembly.
Before selecting a model
- Conductor sizes
- current duty
- terminal arrangement
Isolation & protection
Fuse holders and fuses
Match the fuse system to the protected circuit and fault conditions.
Before selecting a model
- Fuse category
- breaking capacity
- replacement access
Isolation & protection
Miniature and residual circuit breakers
Specify final-circuit protection around the connected loads.
Before selecting a model
- Circuit load
- residual-current type
- fault level
Isolation & protection
Surge protection devices
Coordinate surge protection with the earthing and supply arrangement.
Before selecting a model
- System voltage
- SPD coordination
- installation location
Isolation & protection
Modular contactors and other modular devices
Control building-services loads within distribution equipment.
Before selecting a model
- Load category
- coil voltage
- switching schedule
Isolation & protection
Earth leakage relays
Review earth-leakage monitoring within a coordinated protection scheme.
Before selecting a model
- Sensor compatibility
- trip arrangement
- selectivity
Automation & control
Time relays
Manage delays and sequencing in a defined control process.
Before selecting a model
- Timing function
- control voltage
- output duty
Automation & control
Monitoring relays
Identify phase, voltage or current conditions that need an alarm or trip.
Before selecting a model
- Monitored quantity
- operating window
- reset behaviour
Automation & control
Level controls and float switches
Control filling or pumping from reliable level signals.
Before selecting a model
- Fluid properties
- probe or float
- dry-run strategy
Automation & control
General purpose relays
Interface control signals with suitable output contacts.
Before selecting a model
- Coil voltage
- contact rating
- socket and suppression
Automation & control
Micro PLCs and HMI
Define the operating sequence, inputs and operator interface together.
Before selecting a model
- I/O schedule
- communications
- operator screens
Automation & control
Switching power supplies
Budget the control-system DC demand and start-up requirements.
Before selecting a model
- Output voltage
- continuous current
- inrush and derating
Automation & control
Automatic battery chargers
Maintain compatible starter or control batteries.
Before selecting a model
- Battery chemistry
- DC voltage
- charge characteristics
Energy management
Energy meters and power analyzers
Measure demand and energy at useful points in the system.
Before selecting a model
- Measured circuits
- accuracy needs
- data integration
Energy management
Current transformers
Match sensing to the meter or protection application.
Before selecting a model
- Ratio and secondary
- class and burden
- conductor aperture
Energy management
Power factor controllers and thyristor modules
Review stepped or fast correction control against the load profile.
Before selecting a model
- Number of steps
- CT arrangement
- harmonic conditions
Energy management
Automatic transfer switch controllers
Coordinate source monitoring and the transfer sequence.
Before selecting a model
- Source arrangement
- interlocking
- return-to-mains logic
Energy management
Engine and generator controllers
Specify the signals and sequence needed for standby generation.
Before selecting a model
- Engine interface
- alternator sensing
- communications
Energy management
Fire pump controllers
Define the fire-pump control scope against the approved fire strategy.
Before selecting a model
- Applicable design requirements
- pump and driver
- approval responsibilities
Energy management
Communication devices
Connect compatible devices to the required monitoring network.
Before selecting a model
- Protocol
- physical interface
- network architecture
Energy management
Expansion modules and accessories
Expand a verified host system without assuming interchangeability.
Before selecting a model
- Exact host code
- firmware
- required I/O or communication
Energy management
Software and Apps
Plan commissioning and monitoring tools around compatible equipment.
Before selecting a model
- Supported devices
- licensing
- access and backup policy
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