GRB overheat protector is designed as a matching for PTC thermistor of MZ6. When the temperature of the motor coil( or some point on the coil) is over heat, PTC resistance rise. The signal transmits to GRB overheat protector, making a transition in the protector relay. Then the main current cut off to protector the motor.

Key Specifications/Special Features �G
working voltage: 24V/AC/DC 110V/AC 220V/AC
voltage tolerance: ��20%
frequency: 50-60Hz
consumption power: ��0.8VA
ambient temperature: -30~70�J
contact rate: 7A
action resistance: single: 1K�[ x (1��10%)
�@�@�@�@�@�@�@�@ triple: 3K�[ x (1��10%)
reset resistance: single: 500~600�[
�@�@�@�@�@�@�@�@triple: 1500~1800�[
No.of connecting PTC thermistors: 1~9pcs
weight: 0.20Kg