Discover the offer
Protect and optimize your industrial systems.
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Ensure the safety, efficiency, and reliability of your industrial and commercial installations with Crouzet Monitoring Relays. Protect AC motors, HVAC systems, pumps, conveyors, and more by continuously monitoring phase, voltage, current, and level. Prevent costly downtime and equipment damage with our versatile three-phase and single-phase options. Choose Crouzet for superior performance and compliance with industry standards.
Why Choose Crouzet?
Minimize Downtime: Early fault detection prevents costly production halts.
Enhance Safety: Protect both equipment and personnel
from hazardous conditions.
Boost Efficiency: Continuous monitoring = optimal
performance of your systems.
Cost Savings: Avoid expensive repairs and extend the lifespan of your equipment
Peace of Mind: Reliable, certified relays that meet
industry standards.
Get to know the full offer
Three-phase
Designed to ensure the optimal performance and protection of your electrical systems.
Our advanced relays safeguard motors and equipment from common electrical faults, enhancing the reliability and efficiency of your operations.
By detecting and addressing issues such as over voltage, under voltage, phase sequence errors, phase failure, and asymmetry, our relays provide comprehensive protection and peace of mind.
Full products:
MWS
MWS2
MWG
MWU
MWUA
MWA
HWUA
H3US
H3USN
M3US
Functions:
Over voltage
Protect Equipment from Over Voltage Damage:
Prevent severe damage to motors and equipment caused by excessive voltage. Our three-phase monitoring relays detect high voltage levels, preventing overheating and coil destruction, ensuring your machinery stays safe and operational.
Under voltage
Ensure Stability with Under Voltage Protection:
Avoid equipment malfunction and damage due to low voltage. Our relays monitor voltage levels to maintain optimal power supply, ensuring efficient performance and preventing underperformance in your manufacturing processes.
Phase sequence
Correct Phase Sequence for Safe Operation:
Prevent motors from running in reverse, which can damage compressors, pumps, elevators, and lifts. Our relays ensure the correct phase order, safeguarding your equipment from irreversible damage and ensuring safe operation.
Phase failure
Prevent Motor Burnout with Phase Failure Detection:
Detect phase loss early to avoid motors drawing excessive current from remaining phases, which can lead to overheating and burnout. Our relays protect your motors, reducing downtime and repair costs.
Asymmetry
Maintain Efficiency with Asymmetry Monitoring:
Imbalances over 5% between phases can cause motors to overheat and reduce coil insulation lifespan. Our relays monitor phase symmetry, ensuring motors operate efficiently and maintain rated power, even with increased single loads.
Voltage
Voltage Stability for Reliable Operations!
Ensure Voltage Stability: Protect your equipment from voltage fluctuations with our single-phase voltage monitoring relays. Detect over and under voltage conditions to maintain optimal performance and prevent damage. Available for low voltage (0.2 – 60 V) and high voltage (15 – 600 V) applications.
Full products:
MUS
MUSF
HUL
EUL
HUH
EUH
Functions:
Over voltage
Protect Equipment from Over Voltage Damage
Resistive loads can lead to increased current flow that causes overheating, which can destroy equipment.
Under voltage
Protect Equipment from Under Voltage Damage
Maintain adequate power on the load, protect motors from overheating that destroys insulation between the windings.
Current
Accurate Current Monitoring for Optimal Performance!
Monitor Current Accurately: Safeguard your equipment with our single-phase current monitoring relays. Detect abnormal current levels to prevent overheating and equipment failure. Suitable for low currents (2 – 500 mA) and high currents (0.1 – 10 A). Integrated current transformer available for 2 – 20 A.
Full products:
MIC
HIL
EIL
HIH
EIH
Functions:
Over current
Protect Equipment from Over Current Damage
Excessive current overheats motors and reduces their useful life.
Under current
Protect Equipment from Under Current Damage
Under current can be from system failure, such as a pump running when no fluid is present.
Liquid level
Reliable Liquid Level Control for Diverse Applications!
Ensure Optimal Liquid Levels: Our liquid level monitoring relays are designed to regulate conductive liquids, maintaining levels between maximum and minimum limits. They provide essential protection for submersible pumps, preventing them from running dry.
Sensing – Monitoring – Controlling – Triggering: Manage water levels in tanks, drainage ponds, swimming pools, sinks, and more. Compatible probes communicate to level monitoring relays, safeguarding against machine breakdowns and allowing user to adjust threshold adjustments.
Full products:
ENR
ENRM
HNM
Frequency & Speed
Designed to ensure the optimal performance and protection of your electrical systems:
Maintain Frequency and Speed Stability: Ensure your systems operate within the desired frequency range and control motor speeds with our single-phase frequency and speed monitoring relays.
Monitor frequency variations around 50 Hz (40 – 60 Hz) or 60 Hz (50 – 70 Hz) and detect speed deviations to prevent equipment malfunction and mechanical failures, ensuring smooth and efficient operations.
Full products:
HHZ
HSV
Full Product Selection Guide
If you want to choose the product that matches your specific needs, view our solutions
What’s new?
A refreshing touch!
Presenting a new design, packaging and much more:
- New marking design for better visibility even with more information, and now with laser printing for better sustainability
- Space-saving and user experience upgrades
- Direct access to technical information with a QR code in each product
- Up-to-date standards
- Improved power efficiency
- New Packaging, 100% recycled & recyclable
