Data sheet Electronic overload relay EF65, EF96 and EF146 Electronic overload relays offer reliable protection in case of overload and phase-failure. They are the alternative to thermal overload relays. Motor starters are combinations of overload relays and contactors. Description Overload protection trip class 10E, 20E, 30E selectable Phase loss sensitivity Temperature compensation from -25 +70 C Adjustable current setting for overload protection Automatic or manual reset selectable Trip-free mechanism Status indication STOP and TEST function Direct mounting onto block contactors Sealable operating elements Self-supplied devices Order data EF65, EF96, EF146 screw terminal For AF40 AF146 block contactors Setting range Type Order code Suitable for Packing unit Weight per PCE A PCE kg 20 ... 56 EF65-56 1SAX331001R1102 AF40, AF52, AF65 1 0.821 25 ... 70 EF65-70 1SAX331001R1101 AF40, AF52, AF65 1 0.821 36 ... 100 EF96-100 1SAX341001R1101 AF80, AF96 1 0.802 54 ... 150 EF146-150 1SAX351001R1101 AF116, AF140, AF146 1 0.879 Suitable for mounting on: AF40, AF52, AF65 AF80, AF96 AF116, AF140, AF146 2CDC231001V0013 2CDC231003V0013Functional description 1 Terminals (1L1, 3L2, 5L3) 1 2 Sealable operating elements 3 Trip class 10E, 20E, 30E selectable 4 RESET Automatic or manual reset selectable 2 3 5 TEST - Status indication 4 6 Signaling contacts 97-98 5 6 7 STOP 7 8 Terminals 2T1, 4T2, 6T3 8 9 9 Current setting range / Self-test function ST Adjustable current setting for overload protection 10 10 Tripping contacts 95-96 Application / internal function The self-supplied electronic overload relays are three pole electronic/mechanical devices. The motor current flows through build-in current transformers and an evaluation circuit will recognize an overload (over current). This will lead 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 electronic overload relay is self-supplied, which mean no extra external supply is needed. 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 a 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 following tables. To prevent thermal overloads in heavy duty applications, the correct cable sizes have to be selected. Operation mode 1~ 3~ 50/60 Hz Contact 95-96 Contact 97-98 Opto-mechanical slide Comment Trip state open closed RESET state closed open ON TEST manual reset mode open closed TEST auto reset mode open closed 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 2 - 2CDC107041D0201 2CDC232017F0013 2CDC232013F0012 2CDC232005F0013