MPT1 PTC Thermistor Relay

Introduction: It is a PTC Thermistor Relay. It offers protections against Over heating of the windings of pumps, motors, transformers, alternators etc. & sense the temperature with the help of PTC thermistor. It can be used with single or triple PTC & also with 6 or 9 PTCs as a special case. It can used for AC/DC motor, generator, transformer, winding protection against over heating of SCRs & Bus Bars.

Features: · Monitors Overload & Phase Loss, Phase Sequence by sensing Overheating of Windings. · Operates with Embedded PTC sensors in the motor / transformer windings. · Suitable for any PTC Thermistor. · Sensor Short / Open Condition Monitoring. · 1 CO output rated 230V AC / 5A (Resistive) · Auto (Optional Manual) Reset. · Plug-in 8 pin base mounted.

Application Areas: Injection Molding machines Machine tools Crane & hoist motors Compressors & fan motors

Technical Specifications:

Sr. Parameter Specifications 1 Supply Voltage Auxiliary 110 / 220 - 240 / 380 - 415 / 440 V AC / 24 V DC ± 10% 2 Output Contacts 1 CO 3 Trip Setting Thermistor Sensor Healthy 40 ohm - 4 K ohm; Thermistor Sensor Trip 4.1 K ohm - 5.5 K ohm; Thermistor Sensor Open 5.6 K ohm & above; Reset 1.5 K ohm - 1.8 K ohm for 1/3 PTC 2.2 K ohm - 2.8 K ohm for 6/9 PTC 4 Trip time delay Less than 2 secs. 5 Resetting Mode Auto / Manual (optional) 6 Dimensions (mm) Overall (L x W x D) 50 x 40 x 40; Mounting (L x W) 8 pin plug-in 7 Weight 175 gms.