2/8/2021 · Larson Electronics Releases Explosion Proof Combination Motor Starter, 480V 3PH, NEMA 4 & 4X – 7/14/2021. Larson Electronics Releases 75 kVA Isolation Transformer, 208Y Delta Primary, 440Y/254 Wye-N Secondary – 7/13/2021. Larson Electronics Releases Explosion Proof Contactor, 20 Amp, 240V AC, ATEX/IECEx Rated – 7/13/2021.