Schneider 9001T8BK - PUSHBUTTON INSERT 30MM KR+SKR+KRD+TRD+T It is impact resistant, dust resistant, water resistant and vibration resistant thanks to its IP66, making it ideal for operation in harsh environments. Contact blocks have terminal screw shipped back out to speed wiring and has a very large variety of accessories. Some operators have super bright LEDs for high visibility. These operators are IP 66, NEMA 4 rated (heavy duty, oil tight, water proof and dust tight without requiring boots). We are dedicatedly involved in providing an excellent quality products at Electrihub.