-Miniature Protective Pulse Relay protection of circuits and motors against overload and phase failure. -Miniature Protective Pulse Relay having the structure of phase failure and temperature compensation. -Miniature Protective Pulse Relay having both automatically and manually operating reset buttons. -Type can be inserted into contactor directly, preventing finger from electrocution. -NO and NC auxiliary contacts are insulating. -Miniature Protective Pulse Relay having test button and stop button -Durable and reliable.