Ptc Thermistor Relay Siemens

April 23, 2018

I have no information on the thermistors in the motors so i am hoping that the old part number will provide enough information t. This unit is 220vac and i would like to move to a 24vdc unit.

Siemens 3un2100 0an7 Ptc Thermistor Tripping Unit Auto Rest 220v 240v

Function Relays Thermistor Motor Protection Simirel

Siemens 3un2100 0cn7 Type A Thermistor Motor Protection

The manual provides overview information for integrating the temperature monitoring relays into the.

Ptc thermistor relay siemens. 3rs1 3rs2 temperature monitoring relays manual 062013 neb927206002000rs aa002 7 introduction 1 purpose of the manual this manual describes the 3rs1 3rs2 temperature monitoring relays. Sirius 3rn2 thermistor motor protection relay manual 102016 a5e34244868002ars aa001 7 introduction 1 11 required basic knowledge basic knowledge of low voltage industrial controls is required to understand this manual. Siemens industry catalog automation technology industrial controls protection equipment sirius 3rn1 thermistor motor protection.

The 3rn2 range is the successor to the successful 3rn1 series. The delivery release for the new 3rn2 thermistor motor protection relays has been issued just in time for sps 2016. Siemens ptc thermistor relay b4 b2491 x x 7600 ptc thermistor of siemens motor ptc thermistor for degaussing thermistor ptc tpt0316 h ptc temperature sensor motor winding siemens ptc thermistor mosquito repellent text.

However many vfds include a dedicated input for a ptc thermistor which just utilities a 0 10v analog input with a voltage divider a resistor is added which is chosen to specify a trip point voltage. Self heating of a ptc thermistor resulting from an electrical load can be calculated as follows. Ptc thermistors have a non linear resistancetemperature response and at a specified temperature the resistance changes rapidly to a very.

Siemens the product thermistor motor protection relay with article number 30050525 is discontinued and only available while stocks last. Ptc thermistors act as thermal protection for electrical machines and are well known particularly as motor protectorsthey are available with or without insulating sleeve and have flexible connecting leads. Thermistor motor protection relays provide decisive benefits in cases in which current dependent protection using either a circuit breaker or an overload relay is not the perfect solution.

I have a siemens 3un7003 that i need to find a replacement for. In certain cases overheating can occur without being detected by the thermal image in the circuit breakeroverload relay for example in the case of heavy starting operation with frequency converters or. Many vendors sell relays which will evaluate the state of the ptc thermistors and produce a relay output which can be wired to a plc.

Product note delivery release for 3rn2 thermistor motor protection relay.