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Mean Well

Mean Well AD-155B Security Power Supply 151.55W 27.6V 5A - UPS

100% full load burn-in testfixed switching frequency at 45KHzUPS function
SKU AD-155B
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Select model — 5 in this family

AD-155B
Available to order
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Overview

AD-155B is the CH1: 27.6V / CH2: 27.1V output model of this series: rated current CH1: 5A / CH2: 0.5A, rated power 151.55W, typical efficiency 84%.

Features

  • Universal AC input / Full range
  • Protections: Short circuit / Overload / Over voltage
  • Battery low and battery polarity protection
  • Cooling by free air convection
  • 100% full load burn-in test
  • Fixed switching frequency at PFC 67KHz, PWM 134KHz
  • 2 years warranty

Specifications

AD-155BSpecifications from the official datasheet (2024-09-30 edition)

OUTPUT

OUTPUT NUMBER
CH1 / CH2
DC VOLTAGE
CH1: 27.6V / CH2: 27.1V
RATED CURRENT
CH1: 5A / CH2: 0.5A
CURRENT RANGE
CH1: 0 ~ 5.5A / CH2: 0 ~ 0.5A
RATED POWER
151.55W
RIPPLE & NOISE (max.)Note.2
CH1: 150mVp-p / CH2: --------
VOLTAGE ADJ. RANGE
CH1: 24 ~ 29V
VOLTAGE TOLERANCENote.3
CH1: ±1.0% / CH2: --------
LINE REGULATION
CH1: ±0.5% / CH2: --------
LOAD REGULATION
CH1: ±0.5% / CH2: --------
SETUP, RISE TIME
1000ms, 90ms/230VAC 2000ms, 90ms/115VAC at full load
HOLD UP TIME (Typ.)
24ms/230VAC 20ms/115VAC at full load

INPUT

VOLTAGE RANGE
88 ~ 264VAC 124 ~ 370VDC
FREQUENCY RANGE
47 ~ 63Hz
POWER FACTOR (Typ.)
PF>0.92 at full load
EFFICIENCY (Typ.)
84%
AC CURRENT (Typ.)
2.5A/115VAC 1.5A/230VAC
INRUSH CURRENT (Typ.)
COLD START 23A/115VAC 45A/230VAC
LEAKAGE CURRENT
<1mA / 240VAC

PROTECTION

OVERLOAD
CH1:105 ~ 135% CH2:0.51 ~ 0.9A rated output power Protection type : AC Charging Mode : Constant current limiting, recovers automatically after fault condition is removed UPS Mode : Protected by internal fuse
OVER VOLTAGE
CH1:31.74 ~ 37.26V Protection type : Shut down o/p voltage, re-power on to recover
BATTERY LOW
19.5V(+1.5V,-1V )

ENVIRONMENT

WORKING TEMP.
-10 ~ +60℃ (Refer to "Derating Curve")
WORKING HUMIDITY
20 ~ 90% RH non-condensing
STORAGE TEMP., HUMIDITY
-20 ~ +85℃, 10 ~ 95% RH
TEMP. COEFFICIENT
±0.03%/℃ (0 ~ 50℃)
VIBRATION
10 ~ 500Hz, 2G 10min./1cycle, 60min. each along X, Y, Z axes

SAFETY & EMC

SAFETY STANDARDS
UL62368-1, TUV BS EN/EN62368-1, AS/NZS 62368.1, EAC TP TC 004 approved
WITHSTAND VOLTAGE
I/P-O/P:3KVAC I/P-FG:2KVAC 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/EN55035, light industry level, EAC TP TC 020

OTHERS

MTBF
1818.3K hrs min. Telcordia SR-332 (Bellcore) ; 229.9K hrs min. MIL-HDBK-217F (25℃)
DIMENSION
199*110*50mm (L*W*H)
PACKING
0.88Kg; 16pcs/15Kg/0.95CUFT
Test conditions and notes5
  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. The power supply is considered a component which will be installed into a final equipment. All the EMC tests are been executed by mounting the unit on a 360mm*360mm metal plate with 1mm of thickness. The final equipment must be re-confirmed that it still meets EMC directives. For guidance on how to perform these EMC tests, please refer to “EMI testing of component power supplies.” (as available on https://www.meanwell.com//Upload/PDF/EMI_statement_en.pdf)
  5. 5. 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

AD-155B Mechanical Specification
Mechanical Specification
AD-155B Block Diagram
Block Diagram
AD-155B Derating Curve
Derating Curve

Downloads

FAQ

What types of systems is the AD-155B designed to power?

The Mean Well AD-155B is suited to security, backup-power, and specialized DC systems that require a 27.6V output rail. With 151.55W of rated power and 5A output current, it is a good fit for equipment that needs higher DC voltage than a 12V-style security supply while still benefiting from UPS-oriented power support.

Can the AD-155B be used in battery-backed or UPS-style DC power systems?

Yes. The AD-155B includes UPS function in the product features, so it is intended for installations where DC load support is paired with battery-backed operation. The total connected demand should remain within the supply's 27.6V, 5A, and 151.55W output rating.

Will the AD-155B operate from common AC mains input ranges?

Yes. Its specified input range is 88-264VAC, which allows operation from common AC mains systems in that range, including both 120V and 240V environments. That flexibility helps standardize deployments across different sites.

Is the AD-155B intended for exposed outdoor use?

No waterproof IP rating is surfaced in the current product data, so the AD-155B should be treated as an indoor or protected-installation power supply rather than a directly exposed outdoor unit. The stated operating range is -10°C to +60°C, with load derating at higher ambient temperatures per the derating curve, and enclosure protection should still match the site conditions.

How does the AD-155B compare with other AD series options?

The AD-155B delivers 151.55W at 27.6V and 5A. In the same AD-155 series, the AD-155A provides 13.8V and 10.5A at the same wattage, while the AD-155C provides 54V and 2.7A at 156.5W. Selection mainly depends on the DC voltage your system requires and the current headroom you need.

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Mean Well AD-155B Security Power Supply 151.55W 27.6V 5A - UPS
Mean Well

Mean Well AD-155B Security Power Supply 151.55W 27.6V 5A - UPS

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AD-155B is the CH1: 27.6V / CH2: 27.1V output model of this series: rated current CH1: 5A / CH2: 0.5A, rated power 151.55W, typical efficiency 84%.

Features

  • Universal AC input / Full range
  • Protections: Short circuit / Overload / Over voltage
  • Battery low and battery polarity protection
  • Cooling by free air convection
  • 100% full load burn-in test
  • Fixed switching frequency at PFC 67KHz, PWM 134KHz
  • 2 years warranty

Model

  • 13.8V 151W
  • 26.7V 155W
  • 54V 156W
  • 13.8V 51W
  • 26.7V 54W
View product

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