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MS2-H50

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KEYENCE MS2-H50 is a compact 24 VDC, 50 W switching power supply with a digital status display and DIN-rail mounting.
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Technical specifications for MS2-H50

  • Manufacturer:
    KEYENCE
  • Part Number:
    MS2-H50
  • Product Family:
    KEYENCE
  • Product Type:
    Compact Switching Power Supply
  • Stock:
    1
  • Series:
    MS2
  • Rated Output:
    24 VDC, 2.1 A, 50 W
  • Input Voltage:
    85 to 264 VAC or 110 to 370 VDC
  • Input Frequency:
    47 to 63 Hz
  • Cooling:
    Natural air cooling
  • Display:
    3-digit 7-segment LED
  • Overcurrent Protection:
    Constant-current drop with automatic recovery
  • Overvoltage Protection:
    Voltage interruption; input reset required
  • Parallel Operation:
    Supported with specified option
  • Series Operation:
    Supported with external diode
  • Ambient Temperature:
    -10 to +55 °C
  • Weight:
    0.27 kg
  • Estimated shipping dimensions:
    4 x 9.95 x 9.7 cm
  • Tariff Code:
    Please confirm the destination before shipping
  • Country of origin:
    Japan
  • Place of shipment:
    Xiamen,Fujian,China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Load Selection Panel Installation Fault Recovery Product Applications

Features:

  • Visible operating feedback: The front display supports local confirmation of supply behavior without adding a separate panel meter.
  • Defined protection response: Overcurrent and overvoltage events require different recovery decisions.
  • Flexible input: The supply accepts a broad AC range or the documented DC input range for industrial control panels.
MS2-H50 is intended to power industrial control loads from a compact panel-mounted supply.

The displayed output information helps separate supply loss from downstream control faults, but measurement under load remains part of diagnosis.

Thermal spacing and demand review protect operating margin, especially where the enclosure is warm or loads have high startup current.

Apter Power can help confirm the KEYENCE MS2-H50 Compact Switching Power Supply, load demand and panel installation before quotation.
KEYENCE MS2-H50 Compact Switching Power Supply Manuals,Datasheets,Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Continuous demand: Add the steady-state current of every connected load and retain engineering margin.
  • Startup demand: Review inrush and charging loads that may momentarily pull the supply into protection.
  • Parallel use: Apply the specified option and manufacturer conditions rather than tying outputs together directly.
  • Series use: Include the required external diode and verify insulation and grounding for the combined circuit.
  • Ventilation: Preserve airflow and derating clearance around the naturally cooled enclosure.
  • Conductor control: Separate input and output wiring and torque terminals to the approved value.
  • Protective earth: Connect the grounding terminal before energizing the panel.
  • Heat survey: Check enclosure temperature under full machine load, not only with the door open.
  • No output: Compare input presence, display state and downstream load before replacing the supply.
  • Overcurrent: Isolate branches to locate overloads or shorts that cause automatic protection.
  • Overvoltage: Remove input power and wait before reset, then investigate repeated activation.
  • Voltage drop: Measure at both supply and load to distinguish source regulation from cable or terminal loss.
  • PLC panels: Powers controllers, I/O and communication equipment within the verified load budget.
  • Sensor circuits: Supplies regulated DC to industrial sensing and measurement devices.
  • Machine controls: Supports relays and low-voltage control components with local display feedback.
  • Maintenance replacement: Restores a matching KEYENCE supply after load and protection behavior are documented.
Description
MS2-H50 supplies regulated DC power to control equipment while its front display gives technicians a direct view of operating values during commissioning and troubleshooting.

The protection behavior of MS2-H50 separates recoverable overcurrent from an overvoltage event that requires input power to be removed before restart.

Installing MS2-H50 requires ventilation and load review because enclosure temperature, parallel operation and startup demand affect whether the supply can support the connected control circuit reliably.
Alternative Names
MS2H50 MS2 H50
Technical notes
MS2-H50 overvoltage protection does not reset while input power remains applied. If the output disappears, isolate the load, distinguish overcurrent from overvoltage behavior, and wait the manufacturer-specified interval before re-energizing. Repeated trips require investigation of wiring, load demand, ventilation and downstream faults rather than repeated power cycling.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
MS2-H50 shows input power but no usable output. What should a technician distinguish first?
Separate overcurrent, overvoltage and downstream wiring faults by isolating the load and following the different reset behavior stated by KEYENCE.
Can two MS2-H50 units be connected in parallel without additional hardware?
No. Use the specified parallel-operation option and follow the manufacturer’s wiring conditions before sharing load between supplies.
An MS2-H50 works with the panel door open but trips during production. What should be measured?
Check enclosure temperature, airflow, continuous load and startup demand under normal closed-panel operating conditions.
The display on MS2-H50 looks normal but a remote sensor resets. Where should voltage be measured?
Measure at the supply terminals and at the sensor during the event to expose wiring resistance, loose terminals or branch overload.
After an MS2-H50 overvoltage event, is immediate input cycling an acceptable reset method?
No. Remove input power for the specified recovery interval, isolate the load and investigate the cause if the event repeats.
A replacement MS2-H50 has the same output rating. What installation evidence still matters?
Confirm input type, grounding, terminal wiring, ventilation, load margin and any parallel or series accessories before energizing the control circuit.

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