Data sheet Thermal overload relay TF65 and TF96 Thermal overload relays are economic electromechanical protection devices for the main circuit. They are used mainly to protect motors against overload and phase failures. Starter combinations are setup together with contactors. Description Order data Overload protection trip class 10 TF65 and TF96 screw terminal Phase loss sensitivity For AF contactors Temperature compensation from -25 +60 C Adjustable current setting for overload protection Setting range Type Order code Packing Weight Automatic or manual reset selectable unit per PCE Suitable for three- and single-phase application A PCE kg Trip-free mechanism 22.0 ... 28.0 TF65-28 1SAZ811201R1001 1 0.456 Status indication 25.0 ... 33.0 TF65-33 1SAZ811201R1002 1 0.456 STOP and TEST function 30.0 ... 40.0 TF65-40 1SAZ811201R1003 1 0.456 Direct mounting onto block contactors 36.0 ... 47.0 TF65-47 1SAZ811201R1004 1 0.456 44.0 ... 53.0 TF65-53 1SAZ811201R1005 1 0.456 Sealable operating elements 50.0 ... 60.0 TF65-60 1SAZ811201R1006 1 0.466 57.0 ... 67.0 TF65-67 1SAZ811201R1007 1 0.466 40.0 ... 51.0 TF96-51 1SAZ911201R1001 1 0.620 48.0 ... 60.0 TF96-60 1SAZ911201R1002 1 0.620 57.0 ... 68.0 TF96-68 1SAZ911201R1003 1 0.620 65.0 ... 78.0 TF96-78 1SAZ911201R1004 1 0.620 75.0 ... 87.0 TF96-87 1SAZ911201R1005 1 0.620 84.0 ... 96.0 TF96-96 1SAZ911201R1006 1 0.630 Suitable for mounting on: TF65: AF40, AF52, AF65 TF96: AF80, AF96 2CDC231004V0013 2CDC231005V0013Functional description 1 Terminals 1L1, 3L2, 5L3 1 2 Sealable operating elements 3 Current setting range Adjustable current setting for overload protection 2 4 TEST 3 Status indication 4 5 RESET 5 Automatic or manual reset selectable 6 7 6 Signaling contacts 97-98 8 7 Terminals 2T1, 4T2, 6T3 9 8 Tripping contacts 95-96 9 STOP Application / internal function The thermal overload relays are three pole relays with bimetal tripping elements (1 per pole). The motor current flows through the bimetal tripping elements and heats them directly and indirectly. In case of an overload (over current), the bimetal elements become bent as a result of the heating. This leads to a release of the relay and a change of the contacts switching position (95-96 / 97-98). The contact 95-96 is used to control the load contactor. The overload relays have a setting scale in Amperes, which allows the direct adjusting of the relay without any additional calculation. In compliance with international and national standards, the setting current is the rated current of the motor and not the tripping current (no tripping at 1.05 x I, tripping at 1.2 x I I = setting current). The relays are constructed in way that they protect themselves in the event of an overload. The overload relay has to be protected against short-circuit. The appropriate short-circuit protective devices are shown in the table. Operation mode 1~ 3~ Contact 95-96 Contact 97-98 Status indication Comment Trip state open closed RESET state closed open ON TEST manual reset mode open closed TEST auto reset mode open closed while TEST is operated STOP while device is in trip state open closed STOP button has no function STOP while device is in RESET state open open while STOP button is pressed Wiring diagram A 95 97 RESET M TEST 2T1 4T2 6T3 STOP 96 98 2 - 2CDC106069D0201 2CDC232006F0009 2CDC232006F0013 2CDC232001F0010 2CDC232006F0009