Safety relay
Safety relay
For monitoring safety circuits, the Müller safety relay ESR series instantly or with a delay interrupts multiple current circuits when the emergency stop mechanism is activated. Depending on the circuit configuration, it can detect short circuits, ground faults, and short circuits in emergency stop circuits. It immediately interrupts after detection or prevents restart until the cause of the fault is removed. Safety relays that comply with Category 4 require an additional restart monitoring function, and our products meet this requirement. This also serves as a mechanism to prevent unauthorized operation. The ESR series complies with either EN954-1 categories 2 to 4, depending on the model. If more contacts are needed, the expansion unit ESR4-NE can increase the number of circuits up to four. For less stringent applications (such as stop category 1 in EN60204-1), the ESR4-NV delayed action safety relay is suitable, allowing for delays of up to 30 seconds.
basic information
For monitoring safety circuits, the Müller safety relay ESR series instantly or with a delay interrupts multiple current circuits when the emergency stop mechanism is activated. Depending on the circuit configuration, it can detect short circuits, ground faults, and short circuits in emergency stop circuits. It immediately interrupts after detection or prevents restart until the cause of the fault is removed. Safety relays that comply with Category 4 additionally require a restart monitoring function, which our products meet. This also serves as a mechanism to prevent unauthorized operation. The ESR series complies with either EN954-1 categories 2 to 4, depending on the model. If more contacts are needed, the expansion unit ESR4-NE can increase the number of circuits up to four. For less stringent applications (such as stop category 1 in EN60204-1), the ESR4-NV delayed action safety relay is suitable, allowing for delays of up to 30 seconds.
Price information
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Delivery Time
Model number/Brand name
ESR4
Applications/Examples of results
For monitoring complete circuits.
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Founded in Germany, where electrical control technology originated, the former Moeller has accumulated over 100 years of experience since its establishment in 1899 and became a part of the Eaton Group in 2008. Eaton Electric Japan has been supporting customers in Japan for over 49 years since the establishment of its Japanese office in 1974. Our products are developed to comply not only with international standards but also with the electrical and safety standards of various countries, ensuring safe use anywhere in the world. We offer a wide range of control devices necessary between the secondary side of transformers and loads, including various breakers and contactors with built-in thermal functions. We provide globally compliant transformers with short delivery times. Additionally, we offer products that further advance factory automation, such as program relays and compact PLCs that apply the latest electronics technology. We are currently focusing on peripheral equipment for renewable energy systems. With subsidiaries and agents forming a network worldwide, we can provide support tailored to the circumstances of each country. If you are considering export or facing challenges with national standards, please feel free to consult us.