Mean Well XDR-120E-48 120W 48V 2.5A Slim DIN-Rail Industrial Power Supply SMPS

Specifications

• Model Number: XDR-120E-48
• AC Input Voltage Range: 100V – 240V AC
• AC Input Frequency: 50 / 60 Hz
• AC Input Current: 1.4A at 100–240V AC
• DC Output Voltage: 48V DC
• Output Voltage Adjustment Range: 48V – 55V DC (front-panel trimmer)
• Rated Output Current: 2.5A
• Rated Output Power: 120W Max.
• Status Indicator: Front-panel Status LED
• DC OK Relay Contact: Active dry contact (isolated relay output)
• Protections: Short circuit, overload, over voltage, over temperature
• Mounting Format: Standard 35mm DIN rail (TS-35 / 7.5 and TS-35 / 15)
• Terminal Type: Heavy-duty screw terminal blocks
• Cooling: Free air convection
• Enclosure Material: Metal chassis with ventilated top/bottom grilles

Safety Warnings

• Mains Voltage Hazard: The AC input terminals connect directly to lethal 100V–240V AC line power[cite: 1, 3]. Always disconnect and lock out your main circuit breaker before touching any terminal screws or wiring.
• Protective Earth Grounding: You must connect a verified low-impedance earth ground to the chassis Earth terminal (⏚)[cite: 1, 3]. Running this power supply without an earth connection compromises the internal EMI filter and creates a serious electrical shock hazard.
• DC OK Relay Limits: The DC OK dry contacts are rated for low-voltage signaling only[cite: 1, 3]. Do not wire mains AC loads directly across these relay terminals without an external intermediate relay

Accessories Included in the Box

• 1× Mean Well XDR-120E-48 120W DIN-Rail Power Supply module

Frequently Asked Questions 

• Can the Mean Well XDR-120E-48 power high-voltage digital stepper drivers like DM860 or TB6600?
  Yes, the Mean Well XDR-120E-48 is ideal for powering industrial stepper drivers rated up to 50V–80V DC, providing clean 48V power that maximizes high-speed motor torque without resonance. Ensure the total continuous current drawn by all connected motor drivers does not exceed the power supply's 2.5A rated limit.
• Is the XDR-120E-48 compatible with standard Power over Ethernet (PoE) midspans and network switches?
  Yes, the Mean Well XDR-120E-48 delivers the regulated 48V DC nominal output required by IEEE 802.3af and 802.3at PoE injectors and industrial Ethernet switches. You can also fine-tune the front trimmer slightly above 48V to compensate for resistive voltage drop across long Cat6 Ethernet cabling runs.
• Can this power supply be mounted onto standard 35mm top-hat DIN rails like TS-35/7.5 and TS-35/15?
  Yes, the Mean Well XDR-120E-48 features a built-in heavy-duty spring latch designed specifically to snap directly onto standard 35mm wide DIN rails (both TS-35/7.5 and TS-35/15 profiles) without needing additional mounting brackets.
• Does the Mean Well XDR-120E-48 support parallel connection with a second unit to double current capacity to 5A?
  Standard parallel connection for current sharing is not recommended without external ORing diodes or active redundancy modules. If your application demands higher capacity than 2.5A, step up to a single higher-wattage supply such as the Mean Well NDR-240-48 to prevent unbalanced current distribution.
• Can the output voltage of the XDR-120E-48 be tuned above 48V to compensate for long industrial cable runs?
  Yes, the front-panel "Vo Adj." potentiometer allows you to adjust the output voltage continuously between 48V and 55V DC. When increasing the voltage toward 55V, ensure your total load current is scaled down so the overall power output remains strictly within the 120W maximum rating.
  
• What happens to the Mean Well XDR-120E-48 if AC line voltage sags below 100V AC or spikes to 264V AC?
  The Mean Well XDR-120E-48 features a wide universal AC input stage rated for 100V to 240V AC nominal (operating from 90V up to 264V AC), allowing it to maintain an uninterrupted, tightly regulated 48V DC output even during brownouts or grid voltage surges.
  
• What is the continuous current rating of the XDR-120E-48 at 48V versus when adjusted up to 55V DC?
  At the nominal 48V output, the continuous current rating is 2.5A (120W). If trimmed up to 55V DC, the maximum safe continuous current is 2.18A to maintain operation within the unit's 120W thermal and magnetic ceiling.