Thiim Relays
Simple. Reliable. Steady.
Made in Denmark
Why choose Thiim Relays ...
- Developments in Denmark since 1971
- In-house development and testing department
- Production with a focus on quality and documentation
- Certified solutions for industrial environments
- Exports to customers worldwide
Thiim Relays – industrial relays for monitoring, protection and control
Industrial relays designed for critical applications
Thiim Relays develops and manufactures industrial relays for the monitoring, protection and control of electrical installations. Our solutions are used in the energy, industrial, infrastructure, marine, offshore and process plant sectors, where operational reliability and precision are crucial.
Explore our wide range of different types of relays
How does a relay work?
A relay monitors a electrical signal and triggers when a predefined threshold is exceeded.
Depending on the type of relay, it may trigger an alarm, interrupt a circuit or activate another function.
Typical parameters:
- Voltage
- Electricity
- Frequency
- Level of isolation
- Phase sequence
- Battery voltage
| Function | Purpose |
|---|---|
| Monitoring | Detects deviations |
| Protection | Prevents injuries |
| Control | Switches a circuit on or off |
| Signal processing | Converts and transmits signals |
What is an industrial relay?
An industrial relay is an electrical component that monitors, protects or controls electrical circuits. Relays are used to detect faults, monitor voltage and current, and ensure stable operation in industrial plants.
Relays are used, amongst other things, for:
- Phase monitoring
- Earth fault monitoring
- Battery monitoring
- Engine protection
- Voltage check
- Frequency monitoring
- Process control
Applications and industries
Expertise in industrial relays
From the energy supply and process industries to the marine and infrastructure sectors, Thiim Relays provides solutions that contribute to the safe and stable operation of electrical installations. Our relays are designed for environments where precision, quality and reliability are essential.
Explore our relay categories and technical solutions, and see how we help customers around the world to protect and optimise their systems.
Our relays are used in a range of critical industries.
Certifications and quality
Thiim Relays operates in accordance with proven quality processes and international standards.
- CE
- RoHS
- REACH
- Industrial standards
Guide to choosing a relay
The choice of relay depends, amongst other things, on:
- Application
- Voltage level
- Current range
- Environmental conditions
- Certification requirements
| Needs | Recommended solution |
|---|---|
| Earth fault monitoring | DC earth fault relay |
| Battery monitoring | Battery monitor |
| Engine protection | Phase fault relay |
| Signal conversion | Isolation amplifier |
| Network monitoring | Voltage relay |
FAQ on relays
Find the answer to your question here – or email us at relays@thiim.com
What is a relay?
A relay is an electrical component that monitors or controls an electrical circuit.
What types of relays are there?
Among the most commonly used types are earth fault relays, phase fault relays, voltage relays, current relays and battery monitoring systems.
When is an industrial relay used?
Industrial relays are used for monitoring, protecting and controlling electrical installations.
How do I choose the right relay?
The choice depends on the application, voltage, current range, environment and certification requirements.
What is an earth fault?
An earth fault occurs when electrical current is inadvertently conducted to earth through, for example, damaged insulation, moisture or faulty components. Earth faults can lead to operational disruptions, damage to equipment and, in the worst case, personal injury.
What is a DC earth fault relay?
A DC earth fault relay monitors the insulation level in DC systems and detects fault currents to earth. The relay enables early fault detection and helps prevent breakdowns in battery systems, UPS systems, power systems and other DC installations.
How can you tell if cables are worn or damaged?
Cable wear and tear can be caused by vibrations, mechanical stress, moisture or ageing of the insulation. Earth fault monitoring and insulation testing can help detect incipient faults before they develop into serious operational problems or unplanned shutdowns.
What happens if an earth fault occurs in an installation?
An earth fault can lead to unwanted downtime, false alarms, damage to equipment and increased maintenance costs. In critical installations, even minor earth faults can develop into major faults if they are not detected and rectified in good time.
Why is continuous monitoring important in electrical installations?
Continuous monitoring makes it possible to identify anomalies before they develop into critical faults. This increases the plant’s uptime, reduces the risk of breakdowns and contributes to safer and more stable operations.
How do I choose the right solution for earth fault monitoring?
The choice depends, amongst other things, on the type of installation, the voltage level, the requirements for alarm functions and whether the system is AC or DC-based. A correctly sized monitoring solution ensures rapid fault detection and effective protection of the installation.
Benefits of our relays
- Danish production: In-house production ensures full control over quality and delivery
- Long lifetime: Designed for industrial operation and tested to last for many years
- Technical expertise: Developed by experienced engineers and specialists with deep product knowledge
- Flexible solutions: Relays customised for both standard and special applications
Danish-made relays – crafted with experience and precision
At Thiim we produce our relays in-house with our own specialists.
Each relay undergoes rigorous testing and quality assurance to give you a solution that combines Craftsmanship, technology and reliability.
Our engineers have decades of experience and a shared pride in delivering products that last - even in demanding environments.
When you choose a relay from Thiim, you get Danish quality with proven reliability.
We've made a short video about us so you can get to know us better.
Our relays do exactly what they are designed to do - every time.
No unnecessary complexity, no uncertainty.
Only clean, reliable performance.
We believe in old-fashioned quality, where each component is manufactured with precision and built to last.
Our relays deliver stable performance - even under demanding conditions.
When you choose our products, you choose proven solutions that just work - year after year.
Simple. Reliable. Steady.