PMU-27V155WLBA

Panel Mount

PMU Series

PMU-27V155WLBA

Output Voltage

27.6V

Output Power

151W

Output Current

4A,1.5A

Input Voltage Range

90-132Vac, 180-264Vac (Selectable by Switch)

Dimensions (L x W x H)

178 x 97 x 38 mm

7.01” x 3.82” x 1.50”

Unit Weight

0.60 kg (1.32 lb)

Highlights & Features

AC input voltage range selectable by switch
LED indicators for DC OK (Green) and Battery Reverse Polarity Connection (Red)
Zero switch-over time from loss of AC, to battery operation
Conforms to harmonic current IEC/EN 61000-3-2, Class A
High MTBF > 700,000 hrs per Telcordia SR-332
Monitoring Signals for AC OK, DC OK and Battery Low indication
Overvoltage / Overcurrent / Over temperature / Short circuit protections
Built-in over current and short circuit protection in Buffering (battery discharging) mode operation
Certified according to IEC/EN/UL 62368-1

** NRND **

PMU-27V155WLBA, PMU-27V155WLCA

Optional Models

Model	Description
PMU-27V155WCBA	Enclosed, without Signal
PMU-27V155WLCA
PMU-27V155WLBA

Applications

Panel Mount

PMU Series

PMU-27V155WLBA

Highlights & Features

AC input voltage range selectable by switch
LED indicators for DC OK (Green) and Battery Reverse Polarity Connection (Red)
Zero switch-over time from loss of AC, to battery operation
Conforms to harmonic current IEC/EN 61000-3-2, Class A
High MTBF > 700,000 hrs per Telcordia SR-332
Monitoring Signals for AC OK, DC OK and Battery Low indication
Overvoltage / Overcurrent / Over temperature / Short circuit protections
Built-in over current and short circuit protection in Buffering (battery discharging) mode operation
Certified according to IEC/EN/UL 62368-1

** NRND **

PMU-27V155WLBA, PMU-27V155WLCA

Output Voltage

27.6V

Output Power

151W

Output Current

4A,1.5A

Input Voltage Range

90-132Vac, 180-264Vac (Selectable by Switch)

Dimensions

178 x 97 x 38 mm

7.01” x 3.82” x 1.50”

Unit Weight

0.60 kg (1.32 lb)

Applications

Optional Models

Model	Description
PMU-27V155WCBA	Enclosed, without Signal
PMU-27V155WLCA
PMU-27V155WLBA

Download

Datasheet

Uploaded on 21-Apr-2025

Manual

Uploaded on 26-Aug-2021

Image

Uploaded on 21-Jul-2025

Mechanical Drawing

Uploaded on 22-Apr-2020

.DXF

Uploaded on 22-Apr-2020

.STP

Uploaded on 22-Apr-2020

Certificates

BIS

Uploaded on 17-May-2024

Uploaded on 07-Dec-2020

CCC

Uploaded on 17-Feb-2022

Uploaded on 07-Dec-2020

EAC

Uploaded on 22-Apr-2020

REACH

Uploaded on 09-Oct-2025

RoHS

Uploaded on 29-May-2024

SIQ

Uploaded on 07-Dec-2020

TSCA

Uploaded on 15-Nov-2023

UKCA

Uploaded on 03-Nov-2021

Uploaded on 07-Dec-2020

GUI Software

Tech Specs

Output Current

4A,1.5A

Output Voltage

27.6V

Output Voltage Adjustment Range

24-28Vdc

Output Power

151W

Line Regulation

< 0.5% (90-132Vac @ 90% load,180-264Vac @ 100% load)

Load Regulation

< 1.0% (90-132Vac @ 0-90% load,180-264Vac @ 0-100% load)

PARD

< 150mVpp @ 0°C to -20°C
< 100mVpp @ > 0°C to 70°C

Start-up Time

< 1,000ms (115Vac @ 90% load, 230Vac @ 100% load)

Hold-up Time

> 20ms (115Vac @ 90% load, 230Vac @ 100% load)

Dynamic Response (Overshoot & Undershoot O/P Voltage)

± 5%, 0-50% & 50-100% & 10-100% load
(Slew Rate: 0.1A/μS, 50% duty cycle @ 5Hz to 1KHz)

Start-up with Capacitive Loads

3,600μF at 27.6V/5.5A

Voltage Drop Between Input and Output

Normal Mode: 0.5V typ.
Buffering Mode: 0.2V typ.

Rise Time

< 50ms (100Vac @ 90% load, 200Vac @ 100% load)

Nominal Input Voltage

100-120Vac, 200-240Vac (Selectable by Switch)

Input Voltage Range

90-132Vac, 180-264Vac (Selectable by Switch)

Nominal Input Frequency

50-60Hz

Input Frequency Range

47-63Hz

Input Current

< 2.5A @ 115Vac, < 1.5A @ 230Vac

Efficiency at 100% load

> 85.0% @ 115Vac
> 86.0% @ 230Vac

Inrush Current

(Cold Start)
< 25A @ 115Vac & 230Vac

Leakage Current

< 0.5mA @ 264Vac

Power Dissipation

No Load: < 0.4W @ 115Vac, < 0.5W @ 230Vac
100% Load: < 23W @ 115Vac & 230Vac

Case Chassis / Cover AL / SGCC
Indicator LED Indicator: Green LED: DC OK Red LED: Battery Connected in Reverse Polarity
Cooling System Convection
Input Terminal -
Output Terminal -
Signal Terminal -
Noise Sound Pressure Level (SPL) -
Input/Output Terminal -
Signal -
Mounting Rail -
Wire -
Protection Structure -
Terminal -
Unit Weight 0.60 kg (1.32 lb)	Dimensions 178 x 97 x 38 mm 7.01” x 3.82” x 1.50”

Operating Temperature

-20°C to +70°C

Storage Temperature

-40°C to +85°C

Power De-rating

I/P: 90-132Vac:
< 0°C to -20°C de-rate power by 2.25% / °C
50°C to 70°C de-rate power by 2.25% / °C
I/P: 180-264Vac:
< 0°C to -20°C de-rate power by 2.5% / °C
50°C to 70°C de-rate power by 2.5% / °C

Operating Humidity

5 to 95% RH (Non-Condensing)

Shock Test (Non-Operating)

IEC 60068-2-27, 30G (300m/S²) for a duration of 18ms,3 times per direction, 9 times in total

Vibration (Non-Operating)

IEC 60068-2-6, 10Hz to 150Hz @ 50m/S² (5G peak); displacement of 0.35mm; 20 min per axis for all X, Y, Z direction

Operating Altitude

0 to 5,000 Meters (16,400 ft.)

Pollution Degree

Bump Test (Operating)

IEC 60068-2-29, 10G (100m/S²) for a duration of 11ms,1000 times per direction, 3000 times in total

Over Voltage Category

Overvoltage

V1: <37.0V, SELV Output, Hiccup mode, Non-latching (auto-recovery)
B+: 30Vdc Max will not cause damage to the unit

Overload / Overcurrent

Normal Mode: 105-150% of rated load current, Hiccup mode, Non-Latching (Auto recovery)
Buffering Mode: 6.05-11.0A, Latch mode

Over Temperature

Latch mode

Short Circuit

Normal Mode: Hiccup Mode, Non-Latching (Auto-recovery when the fault is removed)
Buffering Mode: Latch mode

Protection Against Shock

Class I with Primary Earth connection

Battery Polarity Protection

Yes (RED LED = ON)

Wrong Battery Voltage Protection

Yes, 30Vdc Max will not cause damage to the unit

Deep Discharge Protection

18.0V ± 0.5V

MTBF

> 700,000 hrs. as per Telcordia SR-332
I/P: 115Vac, Ta: 25°C
O/P: 13.8V/9.9A for 13V model and 27.6V/4.95A for 27V model

Expected Cap Life Time

10 years (115Vac & 230Vac, 50% load @ 40°C)

Electrical Safety

SIQ Bauart: EN 60950-1, EN 62368-1
UL/cUL recognized: UL 60950-1 and CSA C22.2 No. 60950-1, UL 62368-1 and CSA C22.2 No. 62368-1
CB scheme: IEC 60950-1, IEC 62368-1
CCC: GB/T 9254, GB 17625.1 and GB 4943.1
BIS: IS 13252 (Part 1)

In conformance with EMC Directive 2014/30/EU and Low Voltage Directive 2014/35/EU

Galvanic Isolation

Input to Output: 3.0 KVac
Input to Ground: 1.5 KVac
Output to Ground: 0.5 KVac

Safety Entry Low Voltage

SELV (IEC 60950-1)

UKCA

In conformance with Electrical Equipment (Safety) Regulations 2016 No. 1011 and
The Electromagnetic Compatibility Regulations 2016 No. 1091

BIS

IEC 60950-1, IS 13252 (Part 1)

Emission

Generic Standards: CISPR 22, CISPR 32, EN/BS EN 55022, EN/BS EN 55032, FCC Title 47: Class B

Immunity

Generic Standards: EN/BS EN 55024

Harmonic Current Emissions

IEC/EN/BS EN 61000-3-2, Class A, GB17625.1

Voltage Fluctuation and Flicker

IEC/EN/BS EN 61000-3-3

Nominal Battery Voltage

(Batteries not included with power supply)
24Vdc
SLA Sealed lead acid battery
2 x 12Vdc
SLA Sealed lead acid battery

Battery Voltage Range

Continuously Operating: 22.0 to 27.6Vdc (nominal at 24V)
Maximum Allowed Voltage: 32Vdc Max
Minimum Voltage: 16.5Vdc

Battery Capacity

3.3AH/ 7AH/ 12AH/ 15AH

Battery Charging Mode

(Normal Mode)
CC-CV mode (constant current-constant voltage) at 0 to 1.5A

End of Charge Voltage

The unit always charges battery to a fixed voltage value

(/3) Item(s) selected

PMU-27V155WLBA

Panel Mount

PMU Series

PMU-27V155WLBA

Output Voltage

Output Power

Output Current

Input Voltage Range

Dimensions (L x W x H)

Unit Weight

Highlights & Features

Applications

PMU-27V155WCCA

PMU-27V155WCCA

Panel Mount

PMU Series

PMU-27V155WLBA

Highlights & Features

Output Voltage

Output Power

Output Current

Input Voltage Range

Dimensions

Unit Weight

Applications

Download

Download

Tech Specs

Tech Specs

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