Thermistor Motor Protection Relay MK 9003 ATEX

Article number: 0055452
Type: MK9003.12/10110 ATEX AC230V

Temperature monitoring of explosion protected Motors by „extended safety“ EX e EN 60079-7,... more

Product description

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.

Technical specifications

Width:	22,5 mm
Measuring range max.:	> 3.1 kΩ
Auxiliary voltage:	AC, DC
Classification:	Thermistor-Motorschutz
Output contacts:	2 C/O contacts
Enclosure design:	Switch cabinet
Type:	MK 9003 ATEX

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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