Thermistor Motor Protection Relay MK 9003 ATEX Temperature monitoring of explosion protected Motors by „extended safety“ EX e EN 60079-7, „pressure proof enclosure“ EX d EN 60079-1 or „overpressure enclosure“ Ex px in gas containing atmosphere as well as „protection by enclosures“ Ex t EN 60079-31 in dust containing atmosphere. The thermistor Motor protection relay protects Standard and Explosion proof Motor against overheating due to overload accoding to EN 60079-14 and EN 60079-0. Advantages . Reliable temperature monitoring of motors . Rapid fault location Features . According to EN 60947-5-1, EN 60947-8, EN 60079-14, EN 61508, EN 50495, EN 13849 . Detection of - overtemperature - broken wire in sensor circuit - short circuit in sensor circuit . 1 input for 3 or 6 PTC-reistors . Functions as options or settable with DIP-switches: - automatic reset (fault is not stored) - manual reset (fault is stored) - manual reset only on start-up - manual reset on and also after start-up . No voltage safe manual reset . Closed circuit operation . LED indicators for - auxiliary supply - contact position - overtemperature, broken wire or short-circuit in sensor circuit . 2 changeover contacts . Button for reset function . Remote reset via terminals X1 / X2 (NO contact) . Optionally safe separation according to EN 61 140, EN 60 947-1, 6 kV/2 between: - auxiliary voltage and measuring circuit - auxiliary voltage and output contacts - measuring circuit and output contacts - the 2 changeover contacts (only with 2 changeover contacts) . Width 22.5 mm Technical specifications Width: 22,5mm Enclosure design: Switch cabinet Measuring range max.: > 3.1 kΩ Output contacts: 2 C/O contacts Auxiliary voltage: AC, DC Classification: Thermistor-Motorschutz Type: MK 9003 ATEX Manufacturer: E. Dold & Söhne GmbH & Co. KG Type: MK9003.12/10110 ATEX AC230V Art. No.: 0055452