S-400

S Series / S-400
SWITCHING POWER SUPPLY

S-400

387–400W Single Output Switching Power Supply

Enclosed AC/DC switching power supply available in 9V, 12V, 13.5V, 24V and 48V output versions for industrial control, automation systems, electronic equipment and general power supply applications.

Hong Kong MING WELL S-400 switching power supply
387–400W Rated Power Range
9–48V Output Voltage Options
90–132VAC /
180–264VAC
AC Input Range
Up to 86% Efficiency
215 × 115 × 50 mm Overall Dimensions

S-400 Switching Power Supply

The S-400 Series provides five single-output DC versions: 9V, 12V, 13.5V, 24V and 48V.

The S-400 is an enclosed high-power AC/DC switching power supply designed for stable DC power delivery in industrial control equipment, automation systems, electronic equipment and general electrical applications.

The series features high-efficiency operation, built-in fan cooling, soft-start input current, built-in EMI filtering, overload and over-voltage protection, and 100% full-load burn-in testing.

High-Power AC Input

90–132VAC or 180–264VAC switch-selectable input, 47–63Hz, for industrial applications.

Five Output Versions

Available in 9V, 12V, 13.5V, 24V and 48V DC output versions.

Built-in Fan Cooling

Built-in cooling fan supports stable operation at high output power.

Protection Functions

Built-in overload, over-voltage and short-circuit protection for abnormal conditions.

S-400 Model Range

Electrical output specifications for the S-400 voltage versions.

Swipe horizontally to view all models →
Specification S-400-9 S-400-12 S-400-13.5 S-400-24 S-400-48
DC Voltage 9V 12V 13.5V 24V 48V
Rated Current 43A 33A 29A 17A 8.3A
Current Range 0–43A 0–33A 0–29A 0–17A 0–8.3A
Rated Power 387W 396W 400W 400W 400W
Ripple & Noise 150mVp-p 150mVp-p 150mVp-p 150mVp-p 200mVp-p
Voltage Adjustment Range ±10% ±10% ±10% ±10% ±10%
Voltage Tolerance ±1% ±1% ±1% ±1% ±1%
Line Regulation ±0.5% ±0.5% ±0.5% ±0.5% ±0.5%
Load Regulation ±0.5% ±0.5% ±0.5% ±0.5% ±0.5%
Efficiency 78% 83% 85% 85% 86%
Overvoltage Protection 13.8–16.2V 15.5–18.2V 18–21V 27.6–32.4V 57.6–67.2V

General Specifications

Input

Voltage Range 90–132VAC / 180–264VAC selected by switch
Frequency Range 47–63Hz
AC Current 5.6A / 115V;
2.8A / 230V
Inrush Current 40A / 230VAC, cold start
Leakage Current < 3.5mA / 240VAC

Timing

Setup Time 1.5s
Rise Time 50ms
Hold-up Time 20ms

Environment

Working Temperature -10°C to +50°C
Working Humidity 20–90% RH
Storage Temperature / Humidity -20°C to +85°C;
10–95% RH
Temperature Coefficient ±0.03% / °C (0–50°C)
Vibration 10–500Hz, 2G, 10 min/cycle;
60 min each along X, Y and Z axes

Safety & Mechanical

Withstand Voltage I/P–O/P: 3KVAC;
I/P–FG: 1.5KVAC;
O/P–FG: 0.5KVAC
Isolation Resistance I/P–O/P, I/P–FG, O/P–FG:
100MΩ / 500VDC
Dimensions 215 × 115 × 50 mm
Weight 1.15kg

Safety Standards

Safety Norms Meets the requirements of UL1012 (do not apply for marking)
EMC CISPR22 (EN55022); IEC61000-4-2,3,4,5,6,8,11; IEC61000-3-2

Design Features

Cooling Forced air cooling by built-in fan
Output Capacitor 105°C output capacitor
Soft Start Soft-start current helps reduce AC input impact
EMI Filter Built-in EMI filter
Burn-in Test 100% full-load burn-in test

Built-in Protection Functions

Overload Protection

Protection operates at approximately 105%–135% of rated output power. Output power limiting protection is used and normal operation automatically recovers after the abnormal load condition is removed.

Overvoltage Protection

Built-in overvoltage protection is provided for each S-400 output version. The protection threshold depends on the selected output voltage model.

Short Circuit Protection

Built-in short-circuit protection helps protect the power supply during abnormal output conditions. Normal operation can resume after the fault condition is removed.

S-400 Dimension Drawing

Outline dimensions and mounting dimensions.

S-400 switching power supply dimension drawing
Overall Size: 215 × 115 × 50 mm
DIMENSIONS IN MILLIMETERS