OXB1250E3S4Q54B ENCLOSED AUTOMATIC TRANSFER SWITCH

The OXB1250E3S4Q54B is an enclosed automatic transfer switch designed to ensure reliable delivery of critical power in demanding applications. It integrates both switch and controller into a seamless unit, offering compact design and enhanced functionality. Engineered for high performance, it conforms to IEC 60947-6-1 standards and exceeds standard testing requirements.

 

The unit features a four-pole configuration with simultaneous switching capabilities for the fourth pole positioned on either side. Its rated operational voltage spans 200–480 VAC, supporting operational currents of up to 1150 A across AC-31B, AC-32B, and AC-33B categories at voltages between 200–415 V AC. With a rated impulse withstand voltage (Uimp) of 12 kV, insulation voltage (Ui) of 1000 V, and short-time withstand current up to 50 kA rms over 0.3 seconds, it delivers robustness needed for industrial environments.

 

Constructed from durable steel sheet with IP54-rated protection against dust and splashing water per IEC 60529 standards, the enclosure supports bottom cable entry terminals with bolt connections. Thermal performance includes free-air thermal current (Ith) at 1250 A at an ambient temperature of θ =40°C and fully enclosed thermal current (Ithe) rated at 1150 A.

 

Complementing its electrical features are advanced control options such as Level-4 touchscreen functionality integrated directly into the device for ease of operation and configuration without external controllers. Pollution degree classification is level three for compatibility in heavy-duty settings.

 

This switch supports delayed transition type operation suited for sensitive equipment protection during phase changes while adhering to environmental compliance frameworks including RoHS directive EU2011/65/EU amendment July 2019 REACH regulations.

 

With dimensions optimized for integration—810 mm wide by 1010 mm high by a depth of just 300 mm—the OXB1250E3S4Q54B combines efficient use of space with reliability crucial to industrial automation systems within sectors such as power generation or infrastructure management applications.