ABB TF42-5.7B O/L relay 1 maker, 1 breaker, 1 change-over + test button 1 pc(s)

TF42-B are economical, electromechanical motor protection devices for currents up to 38A in railway applications. The devices comply with current rail standards and are therefore suitable for installation in passenger areas and driver's cabs of trains, which frequently operate in tunnels and underground. In case of overload they offer reliable thermal protection for the connected motors.
TF42-B are normally mounted on contactors AF09 to AF38, but with the help of a single setup set, the devices can also be mounted separately on a DIN rail. When the motor current set on the current scale is exceeded, the relays release via bimetal elements and change the switching position of the two auxiliary contacts 1S/1Ö. An upstream contactor is thereby switched off. The relays allow manual or automatic resetting, and they have a test and stop function and a trigger display. The current scale of the devices is lead-sealable. Accessories such as reset buttons and reset buttons complete the product range.
TF42-B have release class 10, are temperature compensated and phase failure-sensitive. They meet the international rail standards IEC 60077 in the applicable parts, IEC 61373 (category 1, class B) for shock and vibration as well as the European safety standard EN 45545-2 for fire and smoke.

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