Rockwell Automation Inc. (Milwaukee, WI) introduced its new line of 1492-SPU miniature circuit breakers that provide cost-effective protection while conserving panel space. Suitable for applications that require branch circuit protection complying with UL and CSA standards, the 1492-SPU miniature circuit breakers may be sized to protect power-limited circuits and control circuits. In addition to protecting branch circuits from damaging currents, the devices also protect load devices such as controllers, solenoids, power supplies and control transformers.
With a selectable current range from 0.5A to 20A at up to 240V, the new supplementary protectors allow users to match breakers with circuit loads without the need of additional devices to protect the branch circuit. The 1492-SPU circuit breakers operate similar to the 1492-SP supplementary protectors, which allow 10 to 20 times less "let-through" energy than a conventional breaker, resulting in less wire heating and minimizing the damage to downstream components. Built-in fault detection helps to quickly determine and troubleshoot faults, simplifying system maintenance and reducing costly downtime.
Measuring 80mm in height, the compact 1492-SPU miniature circuit breakers conserve valuable panel space, allowing end-users and panel builders to incorporate more components into a single cabinet. The Allen-Bradley Bulletin 1492-SPU devices are UL489 listed and CSA 22.2 No. 5 approved.
