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Mean Well

Mean Well SCP-75-12 Power supply 74.5W 13.8V 5.4A

built-in temperature compensation functionno load power consumption<0.75Woutput voltage detection signal
SKU SCP-75-12
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Overview

SCP-75-12 is the 13.8V output model of this series: rated current 5.4A, rated power 74.5W, typical efficiency 80%.

Features

  • Universal AC input/Full range
  • Protections: Short circuit / Overload / Over voltage / Battery polarity protections (by fuse)
  • Built-in temperature compensation function
  • Output voltage detection signal
  • Cooling by free air convection
  • LED indicator for power on
  • No load power consumption <0.75W
  • Suitable for installation in metallic or non-metallic system enclosure
  • 100% full load burn-in test
  • 2 years warranty

Specifications

SCP-75-12Specifications from the official datasheet (2024-11-22 edition)

OUTPUT

DC VOLTAGE
13.8V
RATED CURRENT
5.4A
CURRENT RANGE
0 ~ 5.4A
PEAK 5SNote.6
6.5A
RATED POWER
74.5W
RIPPLE & NOISE (max.)Note.2
120mVp-p
VOLTAGE ADJ. RANGE
+15,-5%
VOLTAGE TOLERANCENote.3
±2.0%
LINE REGULATIONNote.4
±1.0%
LOAD REGULATIONNote.5
±2.0%
SETUP, RISE TIME
600ms, 30ms/230VAC 1200ms, 30ms/115VAC at full load
HOLD UP TIME (Typ.)
50ms/230VAC 16ms/115VAC at full load

INPUT

VOLTAGE RANGE
85 ~ 264VAC 120 ~ 370VDC
FREQUENCY RANGE
47 ~ 63Hz
EFFICIENCY (Typ.)
80%
AC CURRENT (Typ.)
1.5A/115VAC 0.9A/230VAC
INRUSH CURRENT (Typ.)
COLD START 45A
LEAKAGE CURRENT
<2mA / 240VAC

FUNCTION

TEMP. COMPENSATION
By NTC (not provide with the power supply)
OUTPUT VOLTAGE SENSOR
L=output voltage +0.2 ~ 0.7V(AC OK); L=0V(AC Fail)

PROTECTION

OVERLOAD
6.5 ~ 8.7A rated output power Protection type : Hiccup mode, recovers automatically after fault condition is removed
OVER VOLTAGE
16.6 ~ 19.3V Protection type : Shut down o/p voltage, re-power on to recover

ENVIRONMENT

WORKING TEMP.
-20 ~ +60℃ (Refer to output load derating curve)
WORKING HUMIDITY
20 ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY
-40 ~ +85℃, 10 ~ 95% RH
TEMP. COEFFICIENT
±0.05% /℃ (0 ~ 45℃)
VIBRATION
10 ~ 500Hz, 2G 10min./1cycle, period for 60min. each along X, Y, Z axes

SAFETY & EMC

SAFETY STANDARDS
UL62368-1, CB(IEC62368-1), EAC TP TC 004 approved, Design refer to BS EN/EN62368-1
WITHSTAND VOLTAGE
I/P-O/P:3KVAC I/P-FG:2.0KVAC O/P-FG:0.5KVAC
ISOLATION RESISTANCE
I/P-O/P, I/P-FG, O/P-FG:100M Ohms / 500VDC / 25℃/ 70% RH
EMC EMISSION
Compliance to BS EN/EN55032 (CISPR32) Class B, BS EN/EN61000-3-2,3, EAC TP TC 020
EMC IMMUNITY
Compliance to BS EN/EN61000-4-2, 3, 4, 5, 6, 8,11, BS EN/ENV50204, BS EN/EN55035, BS EN/EN61000-6-1, light industry level, EAC TP TC 020

OTHERS

MTBF
2775.7K hrs min. Telcordia SR-332 (Bellcore) ; 461.3K hrs min. MIL-HDBK-217F (25℃)
DIMENSION
159*97*38mm (L*W*H)
PACKING
0.5Kg; 30pcs/16Kg/1CUFT
Test conditions and notes8
  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. Line regulation is measured from low line to high line at rated load.
  5. 5. Load regulation is measured from 0% to 100% rated load.
  6. 6. 33% Duty cycle maximum within every 15 seconds. Average output power should not exceed the rated power.
  7. 7. 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. (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf )
  8. 8. The ambient temperature derating of 3.5℃/1000m with fanless models and of 5℃/1000m with fan models for operating altitude higher than 2000m(6500ft).

Technical drawings

SCP-75-12 Mechanical Specification
Mechanical Specification
SCP-75-12 Block Diagram
Block Diagram
SCP-75-12 Derating Curve
Derating Curve
SCP-75-12 Function Description
Function Description
SCP-75-12 Function Description (2)
Function Description (2)

Downloads

FAQ

Can I use the SCP-75-12 for a heavier 13.8V DC control or automation load?

Yes, this is the highest-current 13.8V model in the listed group at 5.4A and 74.5W. It is suited to larger 13.8V control assemblies, communications gear, or embedded systems that exceed the range of the 2.6A and 3.6A versions.

Is the SCP-75-12 suitable for powering several 13.8V devices from one supply in an equipment cabinet?

It can be, as long as the total DC demand stays within 5.4A and 74.5W at 13.8V. That gives more capacity for multi-device cabinets than lower-power siblings in the same voltage class.

Would this model make sense for 13.8V systems that need output monitoring features?

It may, because alongside its 13.8V constant-voltage output it includes an output voltage detection signal. It also lists temperature compensation capability via an external NTC sensor (not provided with the power supply), which can matter in monitored DC systems operating across a -20°C to +60°C range.

Can the SCP-75-12 be used in demanding ambient temperatures?

The specified operating temperature is -20°C to +60°C, which covers a broad range for indoor industrial and utility enclosures. No IP rating is given in the provided specs, so exposure to rain, dust ingress, or washdown conditions is not verified here.

How does the SCP-75-12 compare with the rest of the SCP series?

The SCP-75-12 outputs 13.8V at 5.4A for 74.5W. The other listed models are SCP-35-12 at 35.9W, 13.8V, 2.6A; SCP-35-24 at 38.6W, 27.6V, 1.4A; SCP-50-12 at 49.7W, 13.8V, 3.6A; SCP-50-24 at 49.7W, 27.6V, 1.8A; and SCP-75-24 at 74.5W, 27.6V, 2.7A.

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Other SCP-75 Models

1 other model
ModelPowerVoltageCurrentBattery Voltage
Mean Well SCP-75-24 Power supply 74.5W 27.6V 2.7A 74.5W 27.6V 2.7A 27.6V View
View all 6 SCP Series models
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Mean Well SCP-75-12 Power supply 74.5W 13.8V 5.4A
Mean Well

Mean Well SCP-75-12 Power supply 74.5W 13.8V 5.4A

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SCP-75-12 is the 13.8V output model of this series: rated current 5.4A, rated power 74.5W, typical efficiency 80%.

Features

  • Universal AC input/Full range
  • Protections: Short circuit / Overload / Over voltage / Battery polarity protections (by fuse)
  • Built-in temperature compensation function
  • Output voltage detection signal
  • Cooling by free air convection
  • LED indicator for power on
  • No load power consumption <0.75W
  • Suitable for installation in metallic or non-metallic system enclosure
  • 100% full load burn-in test
  • 2 years warranty
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