INDUSTRY EXPERTS
Decades of Equipment Knowlege.






16 in stock
This listing is for a NEW Siemens 5ST3 020. The 5ST3 020 is a fault signal contact accessory designed for compatible Siemens miniature circuit breakers and residual current devices. The unit provides remote indication of fault and status conditions through a 1NO + 1NC contact configuration and is commonly used in electrical distribution panels, building automation systems, and industrial control applications.
Decades of Equipment Knowlege.
Parcel Orders Shipped within 24 hrs. Monday thru Friday.
Local Customer Service Reps.