UPL3-4103-1

The Sensata UPL3-4103-1 is a hydraulic magnetic circuit protector from the APL/UPL series. This legacy product is designed for reliable, low-cost power switching, circuit protection, and circuit control. It features a panel mount for easy installation and a lever actuator for manual operation.

This circuit protector operates similarly to an ON-OFF switch, opening and closing circuits under normal load conditions. Upon detecting an overload, the internal mechanism trips, opening the contacts and forcibly returning the handle to the OFF position. The "trip free" design ensures the internal contacts will not remain closed during an overload, even if the handle is held in the ON position.

The APL/UPL series offers various configurations, including series, shunt, and relay types, with a choice of delays and ratings. Multi-pole assemblies are also available, allowing for a mix of current ratings, delays, and internal circuit configurations. While designed for industrial, military, and information processing applications, the APL/UPL is suitable for any situation requiring precision operation.

This specific model, UPL3-4103-1, is designated with the UPL prefix, indicating recognition by UL per UL STD. 1077 as a supplementary protector and certification by CSA per CSA STD. C22.2–No. 235. It is noted as RoHS3 Compliant with an MSL of 1.