The SITOP PSU3400 6EP3233-0TA10-0AY0 addresses a specific requirement in the North American industrial market: generating a NEC Class 2 power-limited 24VDC output from a 48VDC source. Class 2 circuits are inherently limited to 100VA maximum — well below the threshold where an electrical fault could start a fire — which simplifies wiring practices, reduces conduit requirements, and accelerates UL panel certification. At 91W (24V × 3.5A), this converter delivers the maximum practical power within the Class 2 envelope.

48V Infrastructure Compatibility

The 28-60VDC input range aligns with standard 48V telecom rectifier outputs, Power-over-Ethernet midspan injectors, and industrial 48V battery banks used in data centers and communications shelters. Galvanic isolation between input and output ensures that noise and ground faults on the 48V distribution side do not couple into the 24V control circuit. Reverse polarity protection on the input guards against field wiring errors.

Compact Integration

Like all PSU3400 converters, the module measures just 32mm wide, 100mm tall, and 100mm deep — a slim profile that leaves more DIN rail space for I/O modules, relays, and terminal blocks. The output voltage is adjustable via a front-panel potentiometer to compensate for cable voltage drop. A signaling contact reports output status to the supervisory system. Screw terminals handle all power connections.

Key Decision Parameters

For 12VDC input applications in the same PSU3400 series, see the 6EP3133-0TA10-0AY0 (12V→24V, 4A).