Skip to content

ERM50 High Input Range Series


50 W DC-DC Converters (High Input Models)

The 50 W ERM50 series isolated DC-DC converter modules for railway and transportation systems feature an input voltage range of 66 to 160 VDC with a choice of four single output models, 5, 12, 15, and 24 VDC. The converters offer up to 92% efficiency and maximum ambient operating temperature of 85℃ with suitable derating. The series complies with EN50155 standard for electronic equipment used on rolling stock. Standard features include 3000 VAC RMS reinforced insulation, differential remote sense, remote On/Off, undervoltage shutdown, and overload and short-circuit protection. The modules are fully encapsulated in metal case with isolated baseplate and have an industry-standard 2.28 x 1.45-inch (57.9 x 36.8 mm) quarter-brick footprint with 0.5-inch (12.7 mm) height.


  • Baseplate Vibration and Thermal Shock to EN61373
  • High Efficiency up to 92%
  • Input Range 66160 Vdc
  • Operating Temp. Range 40 °C to +85 °C
  • Reinforced Insulation 3000 VACrms
  • Safety meets EN609501 and Railway Standard EN50155
  • Small 57.9 x 36.8 x12.7 mm package
  • Efficiency 92% @ 12 Vo
  • Input range 66 - 160 Vdc
  • Voltage tolerance ±1.0%
  • Noise/ripple 24V model: 150mV, other models: 100mV
  • Overload protection 150% typ of Io max, hiccup
  • Insulation resistance: 1000Mohm
  • Insulation capacitance: 3000pF
  • isolation voltage 3000Vac
  • Switching frequency 320 KHz
  • Mechanical baseplate 1/4 brick encapsulated


  • Metal Case with Isolated
  • No Minimum Load Requirement
  • Remote On/Off
  • UnderVoltage Shutdown


Output Power (W): 50
Length (Inches): 2.28
Width (Inches): 1.45
Height (Inches): 0.5
Mounting Type: BMP; Through Hole
Minimum Output Current (A): 2
Maximum Output Current (A): 10
Output Voltage Range (V): 5V to 24V
All Specifications Collapse Specifications

Stock Check

Model Number
Min. Voltage (V) Max. Voltage (V) Current (A) Nominal Voltage (V) Number of Outputs Samples Buy
ERM02H110 Active, In Stock 24 24 2.08 24 1 Request Buy
ERM03C110 Active, In Stock 15 15 3.33 15 1 Request Buy
ERM04B110 Active, In Stock 12 12 4.17 12 1 Request Buy
ERM10A110 Active, In Stock 5 5 10 5 1 Request Buy

Technical Documentation

24/5 Support Available

Get Expert Advice From Our Engineers

We are committed to providing excellent customer service and technical support to our customers. With live chat and phone support, you can reach out to a qualified engineer for help at any time.
Get Support Now