1SBH136001R2040

ABB NFZ40E-20 (1SBH136001R2040) is a 4-pole auxiliary contactor / contactor relay equipped with four Normally Open contacts. It is intended for switching auxiliary and control circuits in industrial electrical and automation applications.

The -20 coil version operates from 12–20 V DC and is polarity-sensitive, so A1 must be connected to positive (+) and A2 to negative (−). ABB’s NFZ design uses an electronic low-consumption coil interface with integrated surge suppression, reducing the need for an additional external surge suppressor.