High-efficiency KFS1200 Series 1200W AC/DC power supply with 48VDC output, 25A rated current, 42–54V adjustable range, and up to 94% efficiency in a compact 108.8 × 278.1 × 41mm enclosure. Featuring 90–264VAC universal input, peak power up to 3800W for 5 seconds, active current sharing, and remote control functions, it is ideal for industrial and medical applications, collaborative robots, and linear motor systems.

Input Voltage Range

Single-phase 90VAC - 264VAC

Input Voltage Frequency

50Hz - 60Hz

Output voltage

48V

Rated Current

0-25A

Peak Output Current

79A

Rated Power

1200W

Peak Output Power

3800W @ Vin≥220VAC

Output Ripple

≤1%

Peak Efficiency @230Vac

94% (exclude fan power)

Outline

4.28“x10.95”x1.61“ or 108.8mmx278.1mmx41mm

EMC

CLASS B Conducted and CLASS A Radiated Emissions

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Description

30-Second Fit Check

Output rail: 48V DC systems needing up to 25A (1200W)
Peak behavior: up to 79A peak output current (short-duration events)
Input: single-phase 90–264VAC global input range (47–63Hz listed)
Trim window: output adjustable 42–54V (verify your target setpoint)
Controls: DC_OK signal + remote sense + remote on/off (PMBus/CANBus optional)

What It Is & Why It Matters

Compact 1200W platform for cabinet or embedded integration where space is limited (dimensions listed in datasheet)
Remote sense helps compensate wiring drop so the voltage at the load is closer to your setpoint
Active current sharing supports parallel architectures where load distribution is required (verify system design)
Smart fan speed control is designed to balance cooling and operating conditions

Key Specs

Rated output: 48V, 25A (1200W)
Peak power (series): 3800W for 5s when input voltage is ≥180VAC
Efficiency (series note): up to 94% max listed on the 48V model (excluding fan loss)
Output quality (series): ripple 1% p‑p; dynamic response <5%; regulation <3%
Aux rail (series): 5V / 2A max

Only use the trim range and peak window if your end load and test plan confirm stability.

Integration & Controls

Signals: DC_OK
Control: remote on/off control; remote voltage sense compensation
Comms: PMBus or CANBus options (confirm ordering)
Altitude: operation up to 5000m is listed for the series

Best For / Not For

Best for: 48V DC rails that need a compact 1200W module with a wide 42–54V adjustment window
Best for: designs that benefit from DC_OK monitoring and remote sense at the load
Not for: applications requiring fanless cooling (this series lists fan speed control)
Not for: mains below 90VAC, or peak operation when input is below the datasheet peak condition

Typical Applications & Selection Checklist

Applications (listed/implied): industrial/medical AC/DC power systems; collaborative robotics power subsystems
Setpoint check: confirm your required voltage fits 42–54V
Peak check: validate peak duration vs your load event and the 5s peak condition
Integration check: decide if you need DC_OK to PLC/HMI, and whether PMBus/CANBus is required
Thermal check: design airflow around the module and validate cabinet temperature in test

RFQ Quick Checklist

Quantity + target delivery date
Required setpoint within 42–54V + continuous current
Peak event description (duration + frequency)
Need current sharing (Y/N); need PMBus/CANBus (Y/N)
Installation limits: airflow, ambient temperature, altitude

Note: Final compliance and real-world performance depend on end-product design, installation, and verification testing. Certifications may vary by model—see datasheet.