Thermal Overload Protection Relay (TOR) - for direct connection to cont. - Siemens (SIRIUS 3RU21 series) - Size S00 - 3-poles (3P) - rated for 5.5A-8A / 3kW - Thermal overload Class 10 - 1NO+1NC aux. contacts (FAULT) - Manual or automatic reset operation - Direct mounting on cont. - direct connection to contact. (ingoing main connections) + Screw-clamp connections (outgoing main circuits) + Screw-clamp connections (control circuits) - equivalent to 3RU21161HB0