Thermal Relays

We offer many types of thermal relays from leading manufacturers. Our products, due to their manufacturers, are distinguished by high quality and long service life. Overload relays are used in many industries. The parameters of our devices match those in the...

We offer many types of thermal relays from leading manufacturers. Our products, due to their manufacturers,...

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Products that are marked "On Order" in the "Available Quantity" column are usually not in stock. Such products are available for purchase, however, due to their limited customer base, they usually have higher minimum quantities. DACPOL offers products that are not in stock for the following reasons: DACPOL currently has a large number of electronic components in stock and adds new products every day, however, tens of thousands of additional components and their various variants are available from our suppliers. Even though it is unreasonable to have all these products in stock due to the limited sales, we believe that it is in the best interest of our customers to make them available. Our goal is to inform customers about the maximum number of products available and enable them to make decisions based on specifications, prices, availability, required minimums and our technical advice. Please note that selecting the "In Stock" checkbox may limit the display to only products available for delivery straight from the shelf.
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picture_as_pdf Thermal relays ZIEHL Thermal relays SEE IT -- On Order
picture_as_pdf PTC thermal relay type MSF220SE ZIEHL PTC thermal relay type MSF220SE SEE IT T224127 On Order
picture_as_pdf PTC thermal relay type MSF220V / MSF220VU ZIEHL PTC thermal relay type MSF220V / MSF220VU SEE IT -- On Order
picture_as_pdf PTC thermal relay type MSF220VL ZIEHL PTC thermal relay type MSF220VL SEE IT -- On Order
picture_as_pdf TS1000 thermal relay ZIEHL TS1000 thermal relay SEE IT -- On Order
picture_as_pdf TR111V thermal relay ZIEHL TR111V thermal relay SEE IT -- On Order
picture_as_pdf TR122D thermal relay (A) ZIEHL TR122D thermal relay (A) SEE IT -- On Order
picture_as_pdf TR210 thermal relay ZIEHL TR210 thermal relay SEE IT -- On Order
picture_as_pdf TR250 thermal relay ZIEHL TR250 thermal relay SEE IT -- On Order
picture_as_pdf TR400 thermal relay ZIEHL TR400 thermal relay SEE IT -- On Order
picture_as_pdf TR440 thermal relay ZIEHL TR440 thermal relay SEE IT -- On Order
picture_as_pdf TR600 thermal relay ZIEHL TR600 thermal relay SEE IT -- On Order
picture_as_pdf TR600 RS485 thermal relay ZIEHL TR600 RS485 thermal relay SEE IT -- On Order
picture_as_pdf TR640IP thermal relay ZIEHL TR640IP thermal relay SEE IT -- On Order
picture_as_pdf TR1200 thermal relay ZIEHL TR1200 thermal relay SEE IT -- On Order
picture_as_pdf TR1200IP thermal relay ZIEHL TR1200IP thermal relay SEE IT -- On Order
picture_as_pdf Thermal relay PTC, type MSF 220 K ZIEHL Thermal relay PTC, type MSF 220 K SEE IT -- On Order
-- Thermal relay PTC, type MSF 220 V / VU ZIEHL Thermal relay PTC, type MSF 220 V / VU SEE IT -- On Order
picture_as_pdf PTC thermal relay type MS40ZT ZIEHL PTC thermal relay type MS40ZT SEE IT -- On Order
picture_as_pdf PTC thermal relay type MSR820V ZIEHL PTC thermal relay type MSR820V SEE IT -- On Order
picture_as_pdf PTC thermal relay type MSR220K6 ZIEHL PTC thermal relay type MSR220K6 SEE IT -- On Order
picture_as_pdf MS220C PTC thermal relay ZIEHL MS220C PTC thermal relay SEE IT -- On Order
picture_as_pdf TS1000 Trafosafe ZIEHL TS1000 Trafosafe SEE IT -- On Order
picture_as_pdf Thermal relay PTC MS220KA type ZIEHL Thermal relay PTC MS220KA type SEE IT -- On Order
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We offer many types of thermal relays from leading manufacturers. Our products, due to their manufacturers, are distinguished by high quality and long service life. Overload relays are used in many industries. The parameters of our devices match those in the manufacturers' datasheets, which translates into safe operation of the installations where they are installed.

What is a thermal relay?

Thermal relays are used to protect electric motors, transformer windings, or power electronic components. During operation, a motor may be overloaded due to excessive mechanical load, e.g., cutting wet wood, or a drop in supply voltage. A prolonged increase in current consumption can damage the motor due to overheating. This device works as follows: in case of phase current loss or reaching a specific value, it disconnects the control circuit. The thermal relay is a device that protects the motor from overload effects.

How is a thermal relay constructed?

A thermal bimetal relay consists of a set of bimetals heated by the current drawn by the motor and a normally open contact assembly. The normally open contact is triggered by the bending of the bimetals due to temperature rise. The bimetals must be connected in the main motor circuit while the normally open contact is connected in the contactor control circuit.

See also electromechanical relays available in our offer.