MEAN WELL PSC-160B-C is an AC/DC power supply with battery charger in the enclosed version with an L-bracket and cover. It provides a 27.6 V main output rated at 3.8 A and a 27.6 V charging output rated at 2 A, within a combined catalogue rating of 160 W. An external 24 V nominal battery can supply the connected load during an AC interruption.
Product Datasheet
Download MEAN WELL PSC-160 Datasheet (PDF)
The PSC-160 section is on PDF pages 11, 12, 13, 14. Refer to the complete mechanical drawings and notes when planning installation.
Model and output ratings
| Complete model |
PSC-160B-C |
| Configuration |
enclosed version with an L-bracket and cover |
| External battery nominal voltage |
24 V |
| CH1 output voltage |
27.6 V |
| CH1 rated current |
3.8 A |
| CH2 charge voltage |
27.6 V |
| CH2 rated charging current |
2 A |
| Rated total output power |
160 W |
| CH1 current range |
0–5.8 A |
| CH1 voltage adjustment range |
24–29 V |
| CH1 ripple and noise, maximum |
240 mVp-p |
| CH1 tolerance / line / load regulation |
±1.0% / ±0.5% / ±0.5% |
CH1 supplies the load and CH2 charges the external battery. The stated power is the combined unit rating, not a separate allowance for each output. Keep the simultaneous load and charging demand within the total power rating and the applicable current and derating limits.
The CH1 current-range ceiling is not an additional output on top of the rated charging load. The CH2 column specifies rated charging current without a separate adjustable current range.
SVR1 adjusts the CH1 output voltage. Ripple and noise are measured with 20 MHz bandwidth using a 12-inch twisted pair terminated with parallel 0.1 µF and 47 µF capacitors. Voltage tolerance includes set-up tolerance, line regulation and load regulation.
Input and timing
| Input voltage |
90–264 VAC / 127–370 VDC |
| Input frequency |
47–63 Hz |
| Typical efficiency |
90% |
| Typical AC current |
2.5 A at 115 VAC / 1.5 A at 230 VAC |
| Typical cold-start inrush current |
35 A at 115 VAC / 70 A at 230 VAC |
| Leakage current |
<1 mA at 240 VAC |
| Set-up / rise time at full load |
2000 / 30 ms at 230 VAC; 2000 / 30 ms at 115 VAC |
| Typical hold-up time at full load |
40 ms at 230 VAC / 40 ms at 115 VAC |
| Typical power factor at full load |
≥0.95 at 230 VAC / ≥0.98 at 115 VAC |
Unless otherwise specified, catalogue measurements use 230 VAC input, rated load and 25°C ambient temperature. Set-up time is measured at the first cold start; repeated ON/OFF switching can increase the set-up time.
Built-in active power-factor correction is provided.
Battery backup and protection
| Overload protection |
105–150% of rated output power; hiccup mode with automatic recovery after removal of the fault |
| CH1 overvoltage protection |
28.98–37.26 V; shutdown; reapply input power to recover |
| Battery low-voltage cut-off |
20 ± 1 V |
| Battery low alarm threshold |
<22 V |
With AC present, the supply powers the load and charges a connected 24 V nominal battery at the same time. When AC fails, the external battery supplies the load through the backup circuit. Connect the battery to Battery + and Battery −, and the load to +V and −V.
The protection features include short circuit, overload, overvoltage, battery low-voltage cut-off and battery reverse-polarity protection by fuse. Verify battery polarity before connection; fuse protection is not a normal operating mode.
The battery is external. Select its capacity and charging requirements for the application; a battery, battery harness and standalone UPS enclosure are not specified as included with this power supply.
AC OK and battery-low relay contacts
| Alarm contact rating |
30 V maximum / 1 A maximum |
| AC OK contact, CN3 pins 1–2 |
Low or short when the supply is ON; high or open when the supply is OFF |
| Battery-low contact, CN3 pins 3–4 |
Low or short below 22 V battery voltage; high or open above 22 V |
Use an external voltage source and resistor within the contact rating. AC OK indicates the power-supply state; Battery Low indicates the battery threshold. The AC OK relay RL1 also enters hiccup operation while overload protection is active.
Cooling, derating and environment
| Cooling |
Free-air convection |
| Working temperature |
−20 to +70°C, subject to derating |
| Working humidity |
20–90% RH, non-condensing |
| Storage temperature and humidity |
−20 to +85°C / 10–95% RH |
| CH1 temperature coefficient |
±0.03%/°C over 0–45°C |
For this enclosed version with an L-bracket and cover, the horizontal-mounting temperature curve permits 100% load from −20°C through 40°C, then reduces linearly to 50% at 70°C.
The input-voltage curve at 60 Hz permits 80% load at 90 VAC, rising to 100% at 100 VAC and remaining at 100% through 264 VAC. Apply both the input-voltage and ambient-temperature limits.
For fanless operation above 2,000 m, reduce the permitted ambient temperature by 3.5°C per additional 1,000 m. This is an altitude-related thermal derating condition.
Vibration specification: 10–500 Hz, 2 G, 10 minutes per cycle, 60 minutes each along the X, Y and Z axes.
Safety, EMC and reliability
| Safety approvals listed |
UL62368-1; TUV BS EN/EN62368-1; EAC TP TC 004 |
| Withstand voltage |
Input–output: 3 kVAC; input–FG: 2 kVAC; output–FG: 0.5 kVAC |
| Isolation resistance |
100 MΩ between input–output, input–FG and output–FG at 500 VDC / 25°C / 70% RH |
| Emissions compliance |
BS EN/EN55032 (CISPR32) Class B; BS EN/EN61000-3-2 and -3; EAC TP TC 020 |
| Immunity compliance |
BS EN/EN61000-4-2, -3, -4, -5, -6, -8 and -11; BS EN/EN55035, light-industry level; EAC TP TC 020 |
| MTBF |
2005.3K hours minimum, Telcordia SR-332 (Bellcore); 257.1K hours minimum, MIL-HDBK-217F at 25°C |
The supply is a component for installation in final equipment. Reconfirm EMC compliance in the completed equipment.
The catalogue specifies a 100% full-load burn-in test and a two-year warranty.
Mechanical installation and mass
| Specified dimensions, L × W × H |
155.4 × 85 × 37 mm |
| Unit mass |
450 g — catalogue PACKING reference per unit |
| Packing entry |
0.45 kg; 32 units / 15.4 kg / 0.93 CUFT |
| Cover / L-bracket references |
231A-T / 231A-D |
The PCB drawing uses a 141.2 × 64.75 mm mounting-hole pattern with four Ø3.8 mm holes. The mechanical drawing gives a general ±1 mm tolerance and shows up to 3 mm of underside pin projection; allow installation clearance accordingly.
HS1 and HS3 must not be shorted; maintain a safe isolation distance between both heat sinks and the system case. Connect the marked protective-ground mounting points to the system protective earth.
Do not short −V to Battery −; keep the load-return and battery-return connections on their designated terminals.
This -C model is the enclosed assembly. Its drawing identifies cover 231A-T and L-bracket 231A-D. Use the corresponding enclosure drawing and mounting details when fitting the unit.
The bracket drawing additionally marks a 155.5 mm base dimension. Check the detailed bracket drawing and mounting tolerances when designing the enclosure fit.
Connections and mating-part selection
| CN1 AC input |
JST B3P-VH or equivalent; pin 1: AC/N; pin 2: no pin; pin 3: AC/L |
| CN1 mating parts |
JST VHR housing series and JST SVH-21T-P1.1 terminals, or equivalent |
| CN2 DC and battery output |
JST B8P-VH or equivalent; pins 1–2: −V; pins 3–4: +V; pins 5–6: Battery +; pins 7–8: Battery − |
| CN2 mating parts |
JST VHR housing series and JST SVH-21T-P1.1 terminals, or equivalent |
| CN3 alarm connector |
JST B4B-XH or equivalent; pins 1–2: AC OK; pins 3–4: Battery Low |
| CN3 mating parts |
JST XHP housing series and JST SXH-001T-P0.6 terminals, or equivalent |
Use the numbered connector drawing when wiring; connector orientation differs between families. Select the complete VHR or XHP housing reference for the required circuit count, wire size and current. Loose mating housings, crimp terminals and wiring assemblies are not stated as included.
Connect the protective earth before operation and preserve the required insulation clearances. Use the manufacturer's installation instructions together with the dimensional and connection drawings.
Application selection
The main DC output and dedicated charging output support battery-backed security equipment, access control, alarm systems, emergency lighting and central monitoring. Size the load and battery charging demand together, and verify the battery charging voltage, alarm interface, mechanical version and environmental derating for the installation.
