Siemens Products
Others (Industrial Control)
Thermistor motor protection relay Standard evaluation unit 22.5 mm enclosure screw terminal 2 change-over contacts bistable US = 24 V-240 V AC/DC Manual/Auto/Remote reset 2 LEDs (READY/TRIPPED) galvanic isolation Test/reset button Wire break monitoring Short circuit monitoring non-volatile Thermistor motor protection relay SIRIUS 3RN2 for protecting motors against overheating by means of direct temperature measurement. Direct measurement of the motor winding temperature means that the motor is protected even under abnormal conditions such as heavy starting, braking mode, frequent switching or insufficient cooling, and therefore renders precautionary over-dimensioning of the motor unnecessary. It is not necessary to set device parameters as PTC sensors or bimetallic switches are used. LEDs enable fast error diagnostics. The devices are climate-resistant, safe to touch and can be used worldwide thanks to their wide voltage range and international certifications. Available as monostable or bistable evaluation unit, with and without ATEX approval, with one or two sensor circuits as well as auto RESET, manual RESET and/or remote RESET. The devices are available with screw-type or spring-loaded (push-in) terminals. There are versions in widths of 17.5 mm or 22.5 mm, for a TH35 DIN rail or for screw-on fastening with an adapter (accessory) as well as with hard gold plated contacts. Standardized accessories for all device versions, such as detachable terminals, push-in lugs and coding pins, simplify selection and storage. The 3RN2 thermistor motor protection relays replace the proven 3RN1 series. SIRIUS relays - one range for every application.
Thermistor motor protection relay Standard evaluation unit 22.5 mm enclosure screw terminal 2 change-over contacts US = 24 V-240 V AC/DC Manual/Auto/Remote reset with ATEX approval 2 LEDs (READY/TRIPPED) Safe galvanic isolation Test/reset button Wire break monitoring Short circuit monitoring non-volatile Thermistor motor protection relay SIRIUS 3RN2 for protecting motors against overheating, including in potentially explosive atmospheres, by means of direct temperature measurement with ATEX approval. Direct measurement of the motor winding temperature means that the motor is protected even under abnormal conditions such as heavy starting, braking mode, frequent switching or insufficient cooling, and therefore renders precautionary over-dimensioning of the motor unnecessary. The devices can be used to protect motors in atmospheres where there is a possibility of gas or dust explosions. It is not necessary to set device parameters as PTC sensors are used. LEDs enable fast error diagnostics. The devices are climate-resistant, safe to touch and can be used worldwide thanks to their wide voltage range and international certifications. Available as monostable or bistable evaluation unit, with and without ATEX approval, with one or two sensor circuits as well as auto RESET, manual RESET and/or remote RESET. The devices are available with screw-type or spring-loaded (push-in) terminals. There are versions in widths of 17.5 mm or 22.5 mm, for a TH35 DIN rail or for screw-on fastening with an adapter (accessory) as well as with hard gold plated contacts. Standardized accessories for all device versions, such as detachable terminals, push-in lugs and coding pins, simplify selection and storage. The 3RN2 thermistor motor protection relays replace the proven 3RN1 series. SIRIUS relays - one range for every application.
Thermistor motor protection relay Device for warning and switching-off 22.5 mm enclosure screw terminal 1 NO contact + 1 CO contact US = 24 V-240 V AC/DC Manual/Auto/Remote reset with ATEX approval 3 LEDs (READY/WARNING/TRIPPED) Safe galvanic isolation Test/reset button Wire break monitoring Short circuit monitoring non-volatile 2 separate PTC sensor circuits Thermistor motor protection relay SIRIUS 3RN2 for protecting motors against overheating, including in potentially explosive atmospheres, by means of direct temperature measurement with ATEX approval. Direct measurement of the motor winding temperature means that the motor is protected even under abnormal conditions such as heavy starting, braking mode, frequent switching or insufficient cooling, and therefore renders precautionary over-dimensioning of the motor unnecessary. The devices can be used to protect motors in atmospheres where there is a possibility of gas or dust explosions. It is not necessary to set device parameters as PTC sensors are used. LEDs enable fast error diagnostics. The devices are climate-resistant, safe to touch and can be used worldwide thanks to their wide voltage range and international certifications. Available as monostable or bistable evaluation unit, with and without ATEX approval, with one or two sensor circuits as well as auto RESET, manual RESET and/or remote RESET. The devices are available with screw-type or spring-loaded (push-in) terminals. There are versions in widths of 17.5 mm or 22.5 mm, for a TH35 DIN rail or for screw-on fastening with an adapter (accessory) as well as with hard gold plated contacts. Standardized accessories for all device versions, such as detachable terminals, push-in lugs and coding pins, simplify selection and storage. The 3RN2 thermistor motor protection relays replace the proven 3RN1 series. SIRIUS relays - one range for every application.
Timing relay, Multifunction 2 change-over contacts, 13 functions Positively driven Relay contacts 24...240 V AC/DC at 50/60 Hz AC 7 time ranges (0.05 s...100 h) with LED, Screw terminal timing relay SIRIUS 3RP25, 13 functions, suitable for railway applications, for all switching operations involving time delays in control, starting, protection and regulation circuits. Wide range of applications due to wide variety of functions within a very small space. Can be used worldwide thanks to international approvals and wide range of voltages. The innovative enclosure concept in an industrial design offers labeled cover caps, removable terminals and much more. Available as single or multifunctional time relay with semi-conductor output or as electromechanical relay with or without positively driven operation, in each case with various connection technologies. The scope of supply already includes adhesive films for marking of functions. The 3RP25 timing relays replace the well-proven 3RP15 series. SIRIUS relays - one range for every application.
Timing relay, electronic slow-operating 1 change-over contact, 1 time range 0.5...10 s 12-240 V AC/DC at 50/60 Hz AC with LED, Screw terminal timing relay SIRIUS 3RP25, slow-operating, for various switching operations involving time delays in control, starting, protection and regulation circuits, e.g. for cascaded motor startup. Wide range of applications due to wide variety of functions within a very small space. Can be used worldwide thanks to international approvals and wide range of voltages. The innovative enclosure concept in an industrial design offers labeled cover caps, removable terminals and much more. Available as single or multifunctional time relay with semi-conductor output or as electromechanical relay with or without positively driven operation, in each case with various connection technologies. The 3RP25 timing relays replace the well-proven 3RP15 series. SIRIUS relays - one range for every application.
Timing relay, electronic slow-operating 1 change-over contact, 1 time range 1.5...30 s 12-240 V AC/DC at 50/60 Hz AC with LED, Screw terminal timing relay SIRIUS 3RP25, slow-operating, for various switching operations involving time delays in control, starting, protection and regulation circuits, e.g. for cascaded motor startup. Wide range of applications due to wide variety of functions within a very small space. Can be used worldwide thanks to international approvals and wide range of voltages. The innovative enclosure concept in an industrial design offers labeled cover caps, removable terminals and much more. Available as single or multifunctional time relay with semi-conductor output or as electromechanical relay with or without positively driven operation, in each case with various connection technologies. The 3RP25 timing relays replace the well-proven 3RP15 series. SIRIUS relays - one range for every application.
Timing relay, electronic slow-operating 1 change-over contact, 1 time range 5...100 s 12-240 V AC/DC at 50/60 Hz AC with LED, Screw terminal timing relay SIRIUS 3RP25, slow-operating, for various switching operations involving time delays in control, starting, protection and regulation circuits, e.g. for cascaded motor startup. Wide range of applications due to wide variety of functions within a very small space. Can be used worldwide thanks to international approvals and wide range of voltages. The innovative enclosure concept in an industrial design offers labeled cover caps, removable terminals and much more. Available as single or multifunctional time relay with semi-conductor output or as electromechanical relay with or without positively driven operation, in each case with various connection technologies. The 3RP25 timing relays replace the well-proven 3RP15 series. SIRIUS relays - one range for every application.
