Product Description

The Siemens 6EP1433-2BA20 is a SITOP PSU300S three-phase power supply converting 400–500 V AC directly to a regulated 24 V DC at 5 A — eliminating the need for a separate single-phase supply or control transformer in machinery fed from three-phase industrial mains.

Why Three-Phase Input Matters

Connects directly to the machine's 400 V three-phase supply — no control transformer or separate single-phase feeder required
Load balanced across all three phases, reducing harmonic distortion compared to single-phase equivalents
120 W output at 5 A powers PLCs, HMIs, sensors, and small actuators in stand-alone machinery
0.45 kg compact design for DIN rail mounting in motor control centers and machine control panels

Technical Specifications

Parameter	Value
Input Voltage	400–500 V 3 AC
Output Voltage	24 V DC
Output Current	5 A
Output Power	120 W
Protection Class	IP20
Mounting	DIN Rail
Weight	0.45 kg
Certifications	CE, UKCA, RoHS

Application Context

This is the only three-phase model in the current batch. All other SITOP units here are single-phase. The PSU300S is the right choice when the machine's main supply is 400 V three-phase and adding a control transformer for a single-phase power supply would add cost, space, and a potential failure point. For 480 W three-phase applications, larger PSU300S models are also available in the SITOP range.