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The Sensata-Airpax UPL5-31261-2 is a hydraulic magnetic circuit breaker designed for reliable power switching, circuit protection, and control. It features a lever actuator for manual operation, similar to an ON-OFF switch, and a panel mount for easy integration into systems. Upon overload, the internal mechanism trips, opening the contacts and forcibly returning the handle to the OFF position. This protector is 'trip free,' meaning the internal contacts will not remain closed under overload conditions, even if the handle is held in the ON position.
This APL/UPL series protector is a legacy product, and Sensata Technologies recommends the Airpax™ IAL series for new designs. While specific electrical ratings are not detailed here, this type of circuit breaker is suitable for industrial, military, and information processing applications where precision operation is required. It offers configurations including series, shunt, and relay types with various delays and ratings, and multi-pole assemblies are available.
The UPL5-31261-2 is recognized by UL per UL STD. 1077 as a supplementary protector and certified by CSA per CSA STD. C22.2–No. 235. It is designed for robust performance in demanding environments.
| Qty | Low | High |
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| 1+ | $0.99 | $0.99 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
Panel Mount
Lever
Magnetic (Hydraulic Delay)
RoHS3 Compliant
1 Unlimited
REACH Unaffected