OPS2x4-150 150W Open Frame Power Supply
Selec OPS2x4-150-24 Open Frame Power Supply – 24V DC, 4.59A (110W) Convection | 6.25A (150W) Forced Air
High-power 4"×2" open-frame AC-DC module delivering 24V regulated output with up to 150W (forced air), medical BF approvals, ultra-low leakage/touch current, high efficiency up to 93%, and wide −40°C to +70°C operating capability.
The Selec OPS2x4-150-24 is a high-density 24V AC-DC open-frame switching power supply delivering up to 150W with forced air cooling and 110W under natural convection. Designed for medical BF applications, industrial controls, IT/AV devices, and compact embedded systems, it provides robust performance with wide input tolerance, reinforced isolation, and comprehensive protection.
KEY FEATURES
24V DC Output
4.59A convection (110W)
6.25A forced air (150W)
Ultra-compact 4" × 2" × 1.34" footprint
Efficiency up to 93% at 230 VAC
No-load power consumption < 0.5W
−40°C to +70°C operating range (derating >50°C)
Overload/OVP (latched)/OTP/Short-circuit protection
Medical BF approval, 2× MOPP from Primary to Secondary
Leakage current <300 μA, Touch current <100 μA
Fan output: 12V / 0.5A
MTBF > 350K hrs @ 25°C
Class II option available
TECHNICAL SPECIFICATIONS
1. Output Specifications
| Parameter | Value |
|---|---|
| Nominal Voltage | 24V DC |
| Rated Current (Convection) | 4.59A |
| Rated Current (Forced Air) | 6.25A |
| Rated Power | 110W (convection) / 150W (forced air) |
| Ripple & Noise | <1% of Vote |
| Voltage Adjustment Range | 24–26 V |
| Voltage Tolerance | ±1% |
| Line Regulation | ±1% |
| Load Regulation | ±1% |
| Turn-On Time | <2 sec at full load |
| Hold-Up Time | >20 ms (convection), >10 ms (full load) |
| Rise Time | <100 ms |
| Fan Output | 12V, 0.5A |
2. Input Specifications
| Parameter | Value |
|---|---|
| Input Range | 90–264 VAC / 127–370 VDC |
| Frequency | 47–63 Hz |
| Efficiency | Up to 93% |
| AC Current | 1.6A at 115VAC; 0.8A at 230VAC |
| Power Factor | >0.93 @ full load |
| Inrush Current | <60A @ 264VAC (cold start) |
| Leakage Current | <300 μA |
| Touch Current | <100 μA |
| No-Load Power | <0.5W |
3. Protection Features
| Protection | Description |
|---|---|
| Overload | 110–140% of rated current; hiccup mode; auto-recovery |
| Overvoltage | 27–31 V, latched—AC recycle required |
| Short-Circuit | Hiccup mode, auto-recovery |
| Over-Temperature | Shutdown @ 120°C; restart <90°C after AC recycle |
4. Environmental Conditions
| Parameter | Value |
|---|---|
| Operating Temperature | −40°C to +70°C (derating >50°C) |
| Storage Temperature | −40°C to +85°C |
| Humidity | 5–95% RH non-condensing |
| Altitude | 2000 m |
| Cooling | Convection or ≥13 CFM fan |
| Vibration | 10–500 Hz, 2G, 60 min/axis |
5. Safety & EMI/EMC Compliance
| Category | Standard | Level |
|---|---|---|
| Conducted Emission | CISPR32 | Class B |
| Radiated Emission | CISPR32 | Class A |
| ESD | IEC61000-4-2 | Level 4, Criteria A |
| EFT/Burst | IEC61000-4-4 | Level 3, Criteria A |
| Surge | IEC61000-4-5 | Level 3, Criteria A |
| Conducted Susceptibility | IEC61000-4-6 | Level 3, Criteria B |
| Radiated Susceptibility | IEC61000-4-3 | Level 3, Criteria B |
| Magnetic Field | IEC61000-4-8 | Level 3 |
| Voltage Dips / Interruptions | IEC61000-4-11 | Criteria A & B |
| Safety Approvals | IEC / EN / UL 62368-1, IEC / EN 60601-1 (Medical BF) |
6. Mechanical & Connector Details
| Attribute | Details |
|---|---|
| Dimensions | 4" × 2" × 1.34" (10.16 × 5.08 × 3.40 cm) |
| Weight | <180 g |
| Mounting | 4 stand-offs, dia ≤6 mm, height ≥7 mm |
| Input Connector | Tyco 640445-3 (AC Line/Neutral) |
| Output Connector | Tyco 640445-4 (V+ / V−) |
| Fan Connector | Molex 22-04-1021 |
| Earth Terminal | Molex 19705-4301 |
| Dielectric Strength | I/P to O/P: 4000 VAC; I/P to Earth: 1500 VAC |
7. Derating Curve
Full 110W convection up to 50°C
Full 150W possible with forced air ≥13 CFM
Output derates linearly from 50°C to 70°C (50% power)
APPLICATIONS
Medical devices (BF-rated electronics)
Embedded controllers & automation PCBs
IT/AV equipment power modules
Industrial control boards
IoT gateways & compact controllers
Machine interfaces and instrumentation
WHAT’S IN THE BOX
Selec OPS2x4-150-24 Open Frame Power Supply
Technical mounting instructions
Compliance documentation
FAQS
Q1. What is the output rating?
24V DC, 4.59A (110W convection) or 6.25A (150W forced air).
Q2. Is this medically safe?
Yes—IEC 60601-1 BF rated with 2× MOPP isolation.
Q3. What cooling is required?
Convection supports 110W; 13 CFM airflow supports 150W.
Q4. Does it support DC input?
Yes—127–370 VDC input range is supported.
Q5. What is the leakage current?
<300 µA (medical compliant).