UPL555-1208-12

The Sensata APL/UPL Series UPL555-1208-12 is a hydraulic magnetic circuit protector. This legacy product is designed for reliable, low-cost power switching, circuit protection, and circuit control. The lever actuator opens and closes a circuit under normal load conditions, similar to an ON-OFF switch. Upon overload, the internal mechanism trips, opens the contacts, and forcibly returns the handle to the OFF position. The protector is 'trip free,' meaning the internal contacts will not remain closed in the presence of an overload, even if the handle is held in the ON position.

This circuit protector features a panel mount type and a lever actuator. It is recognized by UL per UL STD. 1077 as a supplementary protector and certified by CSA per CSA STD. C22.2–No. 235 as a supplementary protector. The APL/UPL line offers many configurations including series, shunt, and relay with a choice of delays and ratings. Multi-pole assemblies are available with a mix of current ratings, delays, and internal circuit configurations.

While designed for industrial, military, and information processing applications, the APL is suitable for use in any situation where precision operation is required. The product is designated with the UPL prefix. Sensata Technologies recommends utilizing the Airpax™ IAL series for new design-ins as the APL/UPL series is a legacy product and no new design-in orders are being accepted.