OXB250E3S3Q54B ENCLOSED AUTOMATIC TRANSFER SWITCH

The model OXB250E3S3Q54B is an enclosed automatic transfer switch (ATS) engineered for seamless integration of the switch mechanism and controller into a single unit, offering reliable power transfer solutions for critical applications. Designed in accordance with IEC 60947-6-1 standards, it features four poles (4P) with simultaneous switched function capability and supports bottom cable entry for streamlined installation.

 

With a rated operational voltage range of 200–480 V AC and operational current up to 250 A across AC duty classes (AC-31B, AC-32B, AC-33B), this ATS handles demanding electrical loads effectively. The device ensures high performance with a rated insulation voltage of 1000 V, impulse withstand capability at 8 kV, and short-time withstand current ratings reaching 18 kA for durations up to 0.3 seconds. Delayed transition switching adds control flexibility for load management.

 

Constructed from steel sheet within an IP54-rated enclosure compliant with IEC 60529 standards, the product safeguards against environmental exposure while allowing direct-mounted handle operation. Polluted environments are accommodated via Pollution Degree rating of 3.

 

Technical highlights include bolt-type terminals positioned "bottom in-bottom out," Level-3 LCD controller functionality providing advanced display options, configurable fourth pole positions (left/right), and robust thermal currents tested at ambient conditions of Θ =40°C—250 A when fully enclosed or in free-air settings. Dimensions measure W610 x H810 x D300 mm at a net weight of 52 kg; gross packaged weight totals approximately 57 kg.

 

This model meets stringent RoHS regulatory criteria per EU Directive guidelines and adheres to relevant REACH declarations alongside CE conformity provisions. Applications span industrial automation systems requiring uninterrupted power transitions under heavy-use scenarios prevalent in marine operations, oil & gas facilities, buildings infrastructure projects among others seeking optimal redundancy architecture scalability within complex electrical networks care