Ametek SAS5303A Solenoid Switch

The Ametek SAS5303A is a 36V DC continuous‑duty metal‑case solenoid switch in AMETEK’s SAS family, delivering high‑current switching with SPST normally open contacts and a load rating up to 200 A. Its rugged construction uses a moving disk contact within a zinc‑plated steel case, designed to withstand harsh conditions and resist debris‑related damage. The unit provides four terminals: two heavy 5/16‑24 load terminals and two smaller 10‑32 terminals for coil connections, enabling straightforward wiring in demanding electrical systems. Coil voltages for SAS solenoids span 6 to 72 VDC, and the 36 V variant is suitable for continuous operation in inductive loads such as engine starting motors, hydraulic pump motors, and winches, among others. The SAS5303A also features an electrical life rating exceeding 50,000 cycles, with UL‑approved versions available for certain configurations. This four‑terminal design is well suited for vehicle, industrial, and equipment applications where reliable high‑current control is triggered by a low‑current control signal, providing robust switching for auxiliary power circuits or other heavy‑duty loads.