Power Supply Unit Ernitec ELECTRA-PWR-120-48 120W 48V

The Ernitec ELECTRA-PWR-120-48 is a compact DIN-rail mounted power supply that delivers 120W at 48V DC. Designed for industrial Ethernet and automation equipment, it accepts universal AC input (100–240V) or DC input and provides a stable single DC output in a small enclosure suitable for TS-35/7.5 or 15 DIN rails.

Advantages

The unit combines a compact footprint with full protection features — short circuit, overload, over-voltage and over-temperature protection — and uses free-air convection cooling for maintenance-free operation. It includes an LED power indicator, fixed switching frequency (55 kHz) and has passed a 100% full-load burn-in test. The product is UL 508 approved for industrial control equipment.

Suitable for

• Powering industrial Ethernet switches and converters
• Supplying 48V devices in automation cabinets
• DIN‑rail installations in control panels and machinery

Key specifications

• Model: Ernitec ELECTRA-PWR-120-48
• Output: 48V DC, 120W
• Input: Universal AC 100–240V or DC input (AC range selectable by switch)
• Protections: short circuit, overload, over-voltage, over-temperature
• Cooling: free-air convection
• Mounting: DIN rail TS-35/7.5 or 15
• Approvals: UL 508 (industrial control equipment)
• Other: LED indicator, fixed switching frequency 55 kHz, 100% full-load burn-in test

How to use

Mount the power supply on a TS-35/7.5 or 15 DIN rail in the control cabinet, connect the AC (or DC) input according to the polarity and select AC input range via the onboard switch if required. Connect the 48V DC output to the load following standard wiring and grounding practices. Ensure ventilation space around the unit to allow free-air convection cooling and verify LED indicator to confirm power-on status.

Recommendations

Install the unit in an environment within its operating temperature range (‑20 to 70 °C) and avoid blocking ventilation. Use correct wiring gauge and proper protective devices on the input and output circuits to maintain protection functions and reliable operation.