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Mean Well MPS-120-12 Power Supply 120W 12V he rated current is based on there being a fan that can provide 25CFM. 10A

SKU MPS-120-12
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End of Life, Succeeded by RPS-120-12
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Overview

MPS-120-12 is the 12V output model of this series: rated current 10A, typical efficiency 77%.

Specifications

MPS-120-12Specifications from the official datasheet (2013-08-16 edition)Download datasheet PDF

Output Chart

OUTPUT VOLTAGE
12V
RATED CURRENT
10A
OUTPUT CURRENT MINIMUM LOAD
0A
OUTPUT CURRENT CONVECTION (max.)
6.7A
OUTPUT CURRENT WITH FAN WITH 25CFM FAN (Note 2)Note 2
10A
OUTPUT CURRENT PEAK LOAD WITH 25CFM FAN (Max.) (Note 4)Note 4
11A
RIPPLE & NOISE (Max.) (Note 2)Note 2
100mVp-p
VOLTAGE TOLERANCE (Note 3)Note 3
±2.0%
LINE REGULATION
±1.0%
LOAD REGULATION
±2.0%
EFFICIENCY
77%

Specification

AC INPUT VOLTAGE
90~264VAC, 47~440Hz / 127~370VDC
AC INPUT CURRENT (Typ.)
Maximum input current 2.9A at 115VAC, 60Hz or 1.7A at 230VAC, 60Hz with 100% output load
INRUSH CURRENT (Typ.)
Less than 22A at 115VAC or less than 50A at 230VAC under cold start conditions; limited by internal thermistors
SETUP, RISE TIME
800ms, 20ms / 230VAC at full load; 2000ms, 50ms / 115VAC at full load
HOLD-UP TIME (Typ.)
80ms / 230VAC at full load; 14ms / 115VAC at full load
LEAKAGE CURRENT (Note 7)Note 7
Earth leakage current < 150μA/264VAC, Touch current < 100μA/264VAC
DC OUTPUT ADJ. RANGE
-5%~+10% rated output voltage, adjustable by potential meter
OVERLOAD PROTECTION
Protected against short circuit and overload; hiccup mode at 120~160% rated load (MPS-120), recovers automatically after fault condition is removed
OVER VOLTAGE PROTECTION
115%~135% rated output voltage, shut down
POWER GOOD / FAIL SIGNAL (OPTIONAL)
TTL high for power good, TTL low for power fail; +5V TTL signal sent 10~500ms after output reaches 90% of rated value; goes low at least 1ms before output drops below 90%
WORKING TEMP.
-20~70℃ (refer to derating curves)
WORKING HUMIDITY
20~90% RH non-condensing
STORAGE TEMP., HUMIDITY
-40~+85℃, 10~90% RH
TEMP. COEFFICIENT
±0.04%/℃ on all outputs at full load (0~50℃)
VIBRATION
2G, 10Hz~500Hz, 10-minute cycle; 6 testing cycles (60 minutes) each along X, Y, Z axes
SAFETY STANDARDS
Medical: UL60601-1, TUV EN60601-1, IEC60601-1 approved; Commercial: also designed referring to UL60950-1, TUV EN60950-1
WITHSTAND VOLTAGE
I/P-O/P:4000VAC, I/P-FG:2000VAC, O/P-FG:500VAC
ISOLATION RESISTANCE
>100M Ohms for I/P-O/P, I/P-FG, O/P-FG at 500VDC
EMI COMPLIANCE
Conducted & Radiation: EN55011 Class B, EN55022 Class B; Harmonic distortion: EN61000-3-2; Voltage flicker: EN61000-3-3
EMS COMPLIANCE
ESD air: EN61000-4-2 Level 3, 8KV; ESD contact: EN61000-4-2 Level 2, 4KV; RF field susceptibility: EN61000-4-3 Level 2, 3V/m, Level 3, 10V/m; EFT/Burst: EN61000-4-4 Level 2, 1KV/5KHz, Level 3, 2KV/5KHz; Lightning/Surge: EN61000-4-5 Level 2, 2KV/Line-Line, Level 4, 4KV/Line-Earth; Conducted RF susceptibility: EN61000-4-6 Level 2, 3Vrms/m, Level 3, 10Vrms/m; Magnetic field immunity: EN61000-4-8 Level 2, 3A/m, Level 3, 10A/m; Voltage dip, interruption: EN61000-4-11 compliance; Digital phone carrier immunity: ENV50204 Level 2, 3V/m, 900MHz, Level 3, 10A/m, 900MHz
MTBF
262,100 hours min. at full load and 25℃ of ambient temperature, MIL-HDBK-217F
DIMENSION (L*W*H)
177.8x107.95x35.5mm or 7"x4.25"x1.4"
PACKING
0.55Kg; 24pcs/14.5Kg/0.99CUFT
Test conditions and notes7
  1. 1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25℃ of ambient temperature.
  2. 2. Ripple & noise are measured at 20MHz of bandwidth by using a 12" twisted pair-wire terminated with a 0.1μf & 47μf parallel capacitor.
  3. 3. Tolerance : includes set up tolerance, line regulation and load regulation.
  4. 4. 33% Duty cycle maximum within every 30 seconds. Average output power should not exceed the rated power.
  5. 5. The power supply is considered a component which will be installed into a final equipment. The final equipment must be re-confirmed that it still meets EMC directives. For guidance on how to perform these EMC tests, please refer to "EMI testing of component power supplies." (as available on http://www.meanwell.com)
  6. 6. Heat Sink HS1,HS2 can not be shorted.
  7. 7. Touch current was measured from primary input to DC output.

Technical drawings

MPS-120-12 1 2 0 W M e d i c a l series
1 2 0 W M e d i c a l series

Downloads

FAQ

Can I use the MPS-120-12 for a 12V industrial control panel or automation cabinet?

Yes, it is a constant-voltage 12V power supply rated for 10A and 120W with a 25CFM fan (6.7A with convection cooling), which fits many low-voltage control and automation loads. That makes it relevant for 12V relays, HMIs, control accessories, and embedded electronics that stay within those limits. The 90-264VAC input range also supports broad AC input compatibility.

Is the MPS-120-12 suitable for 12V embedded systems or IPC accessories?

It can be used where the equipment requires a regulated 12V DC source rather than a constant-current driver. With 120W total power and 10A output current with a 25CFM fan (6.7A by convection), it suits 12V embedded platforms, industrial PC accessories, and support electronics that match those limits. The answer depends on the load being a 12V constant-voltage load.

Can the MPS-120-12 power 12V security, monitoring, or communications hardware inside equipment?

It can fit 12V electronics in protected equipment enclosures when the combined load stays within 10A and 120W with a 25CFM fan, or 6.7A with convection cooling. That makes it relevant for monitoring devices, communications accessories, and other 12V industrial or IT hardware. It is not the right choice for loads that require a different output voltage.

How does the MPS-120-12 compare with nearby MPS series voltage options?

In the listed 120W group, MPS-120-12 is 120W at 12V and 10A, MPS-120-15 is 120W at 15V and 8A, MPS-120-24 is 120W at 24V and 5A, and MPS-120-48 is 120W at 48V and 2.5A. The MPS-120-5 is listed at 110W with 5V and 22A, and MPS-120-3.3 is 79.2W with 3.3V and 24A. The choice between them is primarily a voltage and current match to the load.

Is the MPS-120-12 meant for indoor or outdoor use?

No IP rating is listed in the provided specs, so it should be treated as a supply for protected indoor equipment environments rather than direct outdoor exposure. Its operating temperature range is -20°C to +70°C with derating per the derating curves, which supports a wide thermal range when the installation is properly enclosed. Outdoor or washdown use would require an explicitly rated enclosure or a model with a stated IP rating.

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Mean Well MPS-120-12 Power Supply 120W 12V he rated current is based on there being a fan that can provide 25CFM.
Mean Well

Mean Well MPS-120-12 Power Supply 120W 12V he rated current is based on there being a fan that can provide 25CFM. 10A

Log in to see price

MPS-120-12 is the 12V output model of this series: rated current 10A, typical efficiency 77%.

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