Application Field: 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. The Product Sells Point�F * Advanced technology * Safety and steady * High reliability * Energy Conservation(self consumption power is 0.8VA) * The shut down temperature can be precisely worked out. Key Specifications/Special Features �F working voltage: 24V/AC/DC 110V/AC 220V/AC voltage tolerance: �}20% frequency: 50-60Hz consumption power: �ƒ0.8VA ambient temperature: -30~70�Ž contact rate: 7A action resistance: single: 1Kƒ¶ x (1�}10%) �@�@�@�@�@�@�@�@ triple: 3Kƒ¶ x (1�}10%) reset resistance: single: 500~600ƒ¶ �@�@�@�@�@�@�@�@triple: 1500~1800ƒ¶ No.of connecting PTC thermistors: 1~9pcs weight: 0.20Kg