The LRD15216 is a TeSys Deca differential thermal overload relay from Schneider Electric, covering a 12...18 A thermal protection adjustment range with class 20 tripping characteristics per IEC 60947-4-1. It provides motor protection with phase-failure sensitivity — tripping at 130 % of Ir on two phases when the third is at zero. The auxiliary contact block carries 1 NO + 1 NC, rated at 1.5 A at 240 V AC-15 or 0.1 A at 250 V DC-13 for signalling circuits.
The screw-clamp control circuit terminals accept 1...2.5 mm² flexible or solid wire (two cables per terminal); the power circuit uses lugs-ring terminals with a tightening torque of 2.3 N·m. IP20 protection means it is suitable for enclosure-mounting in a dry control panel.
Compliance & Environmental
Certified to EN/IEC 60947-4-1, EN/IEC 60947-5-1, UL 60947-4-1, UL 60947-5-1, and CSA C22.2 No 60947-4-1 and 60947-5-1. Rated insulation voltage (Ui) is 600 V (CSA/UL) or 690 V (IEC). Impulse withstand voltage (Uimp) is 6 kV. Storage temperature range -60...70 °C.