Overload Relays 3RU1 Thermal Overload Relays 3RU11 for standard applications 1) On request. 2) Up to I k 0.5 kA; 260 V. 3) If two different conductor cross-sections are connected to one clamping point, both cross-sections must lie in the range specified. If identical cross- sections are used, this restriction does not apply.
12 Siemens · 2009 Type Size Width 3RU11 16 3RU11 26 3RU11 36 3RU11 46 S00 S0 S2 S3 45 mm 45 mm 55 mm 70 mm Auxiliary circuit Number of NO contacts 1 Number of NC contacts 1 Auxiliary contacts – assignment 1 NO for the signal "tripped", 1 NC for disconnecting the contactor Rated insulation voltage Ui V (degree of pollution 3) 690 Rated impulse withstand voltage Uimp kV 6 Contact rating of the auxiliary contacts • NC contact with alternating current AC-14/AC-15, rated operational current I e at Ue: - 24 V A - 120 V A - 125 V A - 230 V A - 400 V A - 600 V A - 690 V A • NO contact with alternating current AC-14/AC-15, rated operational current I e at Ue:
- 24 V A - 120 V A - 125 V A - 230 V A - 400 V A - 600 V A - 690 V A • NC contact, NO contact with direct current DC-13, rated operational current I e at Ue: - 24 V A - 60 V A - 110 V A - 125 V A - 220 V A • Conventional thermal current I th A • Contact reliability (suitability for PLC control; 17 V, 5 mA) 4 4 4 3 2 0.6 0.5 3 3 3 2 1 0.6 0.5 1 1) 0.22 0.22 0.11 62) Yes Short-circuit protection • With fuse - gL/gG operational class A - Quick A • With miniature circuit breaker (C characteristic) A 6 10 6 Protective separation between main and auxiliary V conducting path Acc.
to IEC 60947-1 415 CSA, UL, UR rated data Auxiliary circuit – switching capacity B600, R300 Connection of the auxiliary circuit Connection type • Terminal screw • Tightening torque Nm • Conductor cross-sections (min./max.), 1 or 2 conductors - Solid mm2 - Finely stranded without end sleeve mm2 - Finely stranded with end sleeve mm2 - Stranded mm2 - AWG cables, solid or stranded AWG Screw terminals Pozidriv size 2 0.8 ... 1.2 2 x (0.5 ... 1.5)3), 2 x (0.75 ... 2.5)3) -- 2 x (0.5 ... 1.5)3), 2 x (0.75 ... 2.5)3) 2 x (0.5 ... 1.5)3), 2 x (0.75 ... 2.5)3) 2 x (18 ...
14) Connection type • Conductor cross-sections (min./max.) - Solid - Finely stranded without end sleeve - Finely stranded with end sleeve - Stranded - AWG cables, solid or stranded Cage Clamp terminals 2 x (0.25 ... 2.5) 2 x (0.25 ... 2.5) 2 x (0.25 ... 1.5) -- 2 x (24 ... 14)