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Mean Well LAD-600DU Security/Fire Alarm PSU with Battery Charger/UPS, 600W, 55.2V, UART Signal 7.87A

Name: Mean Well LAD-600DU Security/Fire Alarm PSU with Battery Charger/UPS, 600W, 55.2V, UART Signal 7.87A
Brand: Mean Well
SKU: LAD-600DU
Price: 91.35 USD
Availability: InStock

built-in battery charger and UPS functionTTL signals for status detectionforced UPS mode for battery maintenance1U low profile

SKU LAD-600DU

$91.35 USD

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LAD-600DU

LAD-120D Fixed output Backorder $38.73 USD

LAD-240D Fixed output Backorder $47.98 USD

LAD-360D Fixed output Backorder $51.83 USD

LAD-360DU UART 55.2V Backorder $62.12 USD

LAD-600D Fixed output Backorder $85.20 USD

LAD-600DU UART 55.2V Backorder $91.35 USD

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Overview

LAD-600DU is the CH1: 55.2V / CH2: 55.2V output model of this series: rated current CH1: 7.87A / CH2: 3A(Battery Charger), rated power 600.02W, typical efficiency 91%. Type Blank: TTL signal only.

LAD-600 series is a 600W economical AC/DC low profile security power supply with UPS function. Adopting the input range from 90Vac to 264Vac (115Vac/230Vac selectable by switch) and supports output 27.6V, 41.5V and 55.2Vdc. With high efficiency up to 91% and built-in AC, battery switch for easy maintenance. In addition, LAD-600 series not only provide TTL signals for AC OK, battery disconnect, battery reverse polarity (No damage), battery low detection, battery full and discharge, but also possess UART version so the users can monitor and control the status of the units, that enhance easy way for integration into security and fire systems directly.

Features

Built-in battery charger UPS function
TTL signals for status detection: AC OK, Battery disconnect, Battery reverse polarity, Battery low, Battery full and Discharge (Blank version only)
UART Communication (U version only)
Built-in buzzer alarm (U version only)
Built-in AC and battery circuit ON/OFF switches enhance safetyness during maintenance
Forced UPS mode for battery maintenance
Protections: Short circuit / Overload / Over voltage / Over temperature / Battery low voltage / Battery reverse polarity (No damage)
-20 ~ +60℃ wide operating temperature
Output voltage adjustable (-20%~+5%) for CH1 by VR
Suitable for lead acid and lithium-ion batteries
Design refer to GB17945/GB4717(U version only) system requirement
1U low profile
3 years warranty

Model encoding

Type	Function
Blank (this model)	TTL signal only
U	UART Communication only

Specifications

LAD-600DUSpecifications from the official datasheet (2024-10-30 edition)

OUTPUT

OUTPUT NUMBER: CH1 / CH2
DC VOLTAGE: CH1: 55.2V / CH2: 55.2V
RATED CURRENT: CH1: 7.87A / CH2: 3A(Battery Charger)
CURRENT RANGE: CH1: 0 ~ 10.87A / CH2: --------
RATED POWER: 600.02W
RIPPLE & NOISE (max.)^Note.2: CH1: 360mVp-p / CH2: --------
VOLTAGE ADJ. RANGE: CH1: 43.5 ~ 58V
VOLTAGE TOLERANCE^Note.3: CH1: ±1.0% / CH2: --------
LINE REGULATION: CH1: ±0.5% / CH2: --------
LOAD REGULATION: CH1: ±0.5% / CH2: --------
SETUP, RISE TIME: 2000ms, 50ms/230VAC 2000ms, 50ms/115VAC at full load
HOLD UP TIME (Typ.): 16ms/230VAC 12ms/115VAC at full load
BATTERY STATIC DISCHARGE CURRENT: <100μA

INPUT

VOLTAGE RANGE: 90 ~ 132VAC / 180 ~ 264VAC by switch 240 ~ 370VDC (Default switch at 230VAC)
FREQUENCY RANGE: 47 ~ 63Hz
EFFICIENCY (Typ.): 91%
AC CURRENT (Typ.): 12A/115VAC 7.5A/230VAC
INRUSH CURRENT (Typ.): COLD START 35A/115VAC 60A/230VAC
LEAKAGE CURRENT: <0.5mA Peak / 240VAC

PROTECTION

OVERLOAD^Note.4: CH1:105 ~ 135% CH2:90 ~ 110% Protection type : CH1 OLP, CH2 with battery: The unit will enter to UPS mode when CH1 is around 105%~120%, when total output of CH1 + CH2 reach around 125%~135% output shuts down CH1 OLP, CH2 without battery:Shut down o/p voltage,re-power on to removed CH2 : Constant current limiting; fault condition does not affect CH1 working,recovers automatically after fault condition is removed (External fuse is mandatory in series connection with battery for protection)
OVER VOLTAGE^Note.4: CH1:59 ~ 69V Protection type : Shut down o/p voltage, re-power on to removed
OVER TEMPERATURE^Note.4: Protection type : Shut down o/p voltage, re-power on to removed
BATTERY REVERSE POLARITY: Protected when reverse polarity , no damage, recovers automatically after fault condition is removed
BATTERY CUTOFF: 43V±0.5V

FUNCTION

AC OK: 115VAC Input : Signals AC failure and activates when input voltage <75VAC Recover the main power supply when input voltage >87VAC 230VAC Input : Signals AC failure and activates when input voltage <165VAC Recover the main power supply when input voltage >175VAC
CHARGER CIRCUIT FAIL: Battery disconnected, battery reverse polarity , signal failure
BUZZER ALARM: Battery low( fire alarm system selectable by UART) AC fail, Battery low, battery disconnected, battery reverse connect, overload status (evacuation system selectable by UART)

ENVIRONMENT

WORKING TEMP.: -20 ~ +60℃ (Refer to "Derating Curve")
WORKING HUMIDITY: 20 ~ 95% RH non-condensing
STORAGE TEMP., HUMIDITY: -30 ~ +85℃, 10 ~ 95% RH non-condensing
TEMP. COEFFICIENT: ±0.03%/℃ (0 ~ 50℃)
VIBRATION: 10 ~ 500Hz, 5G 10min./1cycle, 60min. each along X, Y, Z axes

SAFETY & EMC

SAFETY STANDARDS: UL62368-1, BS EN/EN62368-1, AS/NZS62368.1, EAC TP TC 004 approved; Design refer to GB 17945-2010,GB4717
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: Parameter Standard Test Level

Conducted BS EN/EN55032 (CISPR32), EAC TP TC 020 Class A
Radiated BS EN/EN55032 (CISPR32), EAC TP TC 020 Class A
EMC IMMUNITY: Parameter Standard Test Level

ESD BS EN/EN61000-4-2 Level 3, 8KV air; Level 2, 6KV contact; criteria A
Radiated BS EN/EN61000-4-3 Level 3, 10V/m; criteria A
EFT / Burst BS EN/EN61000-4-4 Level 3, 2KV; criteria A
Surge BS EN/EN61000-4-5 Level 3, 1KV/Line-Line ;2KV/Line-FG ;criteria A
Conducted BS EN/EN61000-4-6 Level 3, 10V; criteria A
Magnetic Field BS EN/EN61000-4-8 Level 4, 30A/m; criteria A

Parameter	Standard	Test Level
Conducted	BS EN/EN55032 (CISPR32), EAC TP TC 020	Class A
Radiated	BS EN/EN55032 (CISPR32), EAC TP TC 020	Class A

Parameter	Standard	Test Level
ESD	BS EN/EN61000-4-2	Level 3, 8KV air; Level 2, 6KV contact; criteria A
Radiated	BS EN/EN61000-4-3	Level 3, 10V/m; criteria A
EFT / Burst	BS EN/EN61000-4-4	Level 3, 2KV; criteria A
Surge	BS EN/EN61000-4-5	Level 3, 1KV/Line-Line ;2KV/Line-FG ;criteria A
Conducted	BS EN/EN61000-4-6	Level 3, 10V; criteria A
Magnetic Field	BS EN/EN61000-4-8	Level 4, 30A/m; criteria A

OTHERS

MTBF: 1019.6K hrs min. Telcordia SR-332 (Bellcore); 144.4K hrs min. MIL-HDBK-217F (25℃)
DIMENSION: 225*124*41mm (L*W*H)
PACKING: 1.02Kg; 12pcs/13.5Kg/0.78CUFT

Test conditions and notes7

1. All parameters NOT specially mentioned are measured at 230VAC input, rated load and 25℃ of ambient temperature.
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. Tolerance : includes set up tolerance, line regulation and load regulation.
4. Once the protection is triggered, the input voltage needs to be disconnected, and the cold machine will wait for 3 minutes before restarting.
5. 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. All the radiation tests require an additional 20*30*13 NIZN magnetic clasp or magnetic ring to the battery output line. 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 )
6.This power supply does not meet the harmonic current requirements outlined by BS EN/EN61000-3-2. Please do not use this power supply under the following conditions: a) the end-devices is used within the European Union, and b) the end-devices is connected to public mains supply with 220Vac or greater rated nominal voltage, and c) the power supply is: - installed in end-devices with average or continuous input power greater than 75W, or - belong to part of a lighting system Exception: Power supplies used within the following end-devices do not need to fulfill BS EN/EN61000-3-2 a) professional equipment with a total rated input power greater than 1000W; b) symmetrically controlled heating elements with a rated power less than or equal to 200W
7. 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

LAD-600DU Suggested Application — Suggested Application

LAD-600DU ※ Remote UPS mode — ※ Remote UPS mode

LAD-600DU 2.2 Charging Curve for Different Battery(U version only) — 2.2 Charging Curve for Different Battery(U version only)

LAD-600DU ◎ Charging curve — ◎ Charging curve

LAD-600DU 2.3 Mode Selection for Buzzer(U version only) — 2.3 Mode Selection for Buzzer(U version only)

LAD-600DU 2.4 Battery Inspection — 2.4 Battery Inspection

LAD-600DU 2.5 UART Communication Interface(U version only) — 2.5 UART Communication Interface(U version only)

LAD-600DU L A D - 6 0 0 series — L A D - 6 0 0 series

LAD-600DU L A D - 6 0 0 series (2) — L A D - 6 0 0 series (2)

LAD-600DU L A D - 6 0 0 series (3) — L A D - 6 0 0 series (3)

LAD-600DU L A D - 6 0 0 series (4) — L A D - 6 0 0 series (4)

LAD-600DU Illustration (page 9) — Illustration (page 9)

Typical applications

Downloads

Datasheet1

LAD-600DU datasheetLAD-600-SPEC.PDF · 2024-10-30 edition PDF Download

FAQ

What is the Mean Well LAD-600DU designed for?

The LAD-600DU is a 600W security and fire alarm power supply with a built-in battery charger and UPS function. It is intended for systems that need stable 55.2V output plus battery-backed operation and status monitoring.

Does the LAD-600DU support battery backup operation?

Yes. This model includes both a built-in battery charger and UPS function, so it is suited to applications that require backup power continuity. It also includes a forced start UPS mode for emergency, maintenance or testing.

What battery types is the LAD-600DU compatible with?

The LAD-600DU is suitable for both lead acid and lithium-ion batteries, selected via pins 5 and 6 of CN2 (short for Li-ion, open for lead-acid). That makes it more flexible than models limited to a single battery chemistry.

What status signals are available on the LAD-600DU?

As a UART version, this model reports AC OK, battery disconnect/reverse polarity, battery low, battery full and discharge status through its UART communication protocol rather than TTL pins. UART also uploads fault signals, working status, battery, mains and output voltage and output current, and a buzzer alarm signals fault conditions.

What protection features are built into the LAD-600DU?

The LAD-600DU includes overload, over voltage (59 to 69V), over temperature, battery cutoff (43V ±0.5V) and battery reverse polarity protection. Mean Well also specifies that reverse battery polarity protection is no-damage.

Can the LAD-600DU be used in demanding temperature conditions?

Yes. The rated operating temperature range is -20 to +60 degrees C, with output derating at higher temperatures per the derating curve, which suits a wide range of indoor equipment environments. Buyers should still confirm the full enclosure and system conditions match the application.

What are the main electrical ratings of the LAD-600DU?

This model is rated for 600W output with a nominal output voltage of 55.2V and rated current of 7.87A. Channel 1 output voltage is also adjustable within a 43.5V to 58V range.

What certifications and compliance standards does the LAD-600DU meet?

The LAD-600DU is approved to UL62368-1, BS EN/EN62368-1, AS/NZS62368.1, and EAC TP TC 004. Its design also refers to GB 17945-2010 and GB4717, and EMC coverage includes EN55032 Class A and multiple EN61000 immunity standards.

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Model	Power	Voltage	Current	IP Rating	Price
Mean Well LAD-600B Security/Fire Alarm PSU with Battery Charger/UPS, 600W, 27.6V, TTL Signal 18.74A	600.02W	27.6V	18.74A	IP20	$85.20	View
Mean Well LAD-600D Security/Fire Alarm PSU with Battery Charger/UPS, 600W, 55.2V, TTL Signal 7.87A	600.02W	55.2V	7.87A	IP20	$85.20	View
Mean Well LAD-600CU Security/Fire Alarm PSU with Battery Charger/UPS, 600W, 41.5V, UART Signal 11.45A	599.67W	41.5V	11.45A	IP20	$91.35	View
Mean Well LAD-600C Security/Fire Alarm PSU with Battery Charger/UPS, 600W, 41.5V, TTL Signal 11.45A	599.67W	41.5V	11.45A	IP20	$85.20	View
Mean Well LAD-600BU Security/Fire Alarm PSU with Battery Charger/UPS, 600W, 27.6V, UART Signal 18.74A	600.02W	27.6V	18.74A	IP20	$91.35	View
Mean Well LAD-360DU Security/Fire Alarm PSU with Battery Charger/UPS, 360W, 55.2V, UART Signal 5.03A	360.46W	55.2V	5.03A	IP20	$62.12	View
Mean Well LAD-360D Security/Fire Alarm PSU with Battery Charger/UPS, 360W, 55.2V, TTL Signal 5.03A	360.46W	55.2V	5.03A	IP20	$51.83	View
Mean Well LAD-360CU Security/Fire Alarm PSU with Battery Charger/UPS, 360W, 41.5V, UART Signal 7.14A	358.56W	41.5V	7.14A	IP20	$62.12	View
Mean Well LAD-360C Security/Fire Alarm PSU with Battery Charger/UPS, 360W, 41.5V, TTL Signal 7.14A	358.56W	41.5V	7.14A	IP20	$51.83	View
Mean Well LAD-360BU Security/Fire Alarm PSU with Battery Charger/UPS, 360W, 27.6V, UART Signal 11.5A	358.8W	27.6V	11.5A	IP20	$62.12	View
Mean Well LAD-360B Security/Fire Alarm PSU with Battery Charger/UPS, 360W, 27.6V, TTL Signal 11.5A	358.8W	27.6V	11.5A	IP20	$51.83	View
Mean Well LAD-240D Security/Fire Alarm PSU with Battery Charger/UPS, 240W, 55.2V 3.4A	242.88W	55.2V	3.4A	IP20	$47.98	View
Mean Well LAD-240C Security/Fire Alarm PSU with Battery Charger/UPS, 240W, 41.5V 4.78A	239.87W	41.5V	4.78A	IP20	$46.98	View
Mean Well LAD-240B Security/Fire Alarm PSU with Battery Charger/UPS, 240W, 27.6V 7.7A	240.12W	27.6V	7.7A	IP20	$45.98	View
Mean Well LAD-240A Security/Fire Alarm PSU with Battery Charger/UPS, 240W, 13.8V 16.4A	240.12W	13.8V	16.4A	IP20	$44.98	View
Mean Well LAD-120D Security/Fire Alarm PSU with Battery Charger/UPS, 120W, 55.2V 1.21A	121.99W	55.2V	1.21A	IP20	$38.73	View
Mean Well LAD-120C Security/Fire Alarm PSU with Battery Charger/UPS, 120W, 41.5V 1.9A	120.35W	41.5V	1.9A	IP20	$38.73	View
Mean Well LAD-120B Security/Fire Alarm PSU with Battery Charger/UPS, 120W, 27.6V 3.4A	121.4W	27.6V	3.4A	IP20	$38.73	View
Mean Well LAD-120A Security/Fire Alarm PSU with Battery Charger/UPS, 120W, 13.8V 7.7A	120W	13.8V	7.7A	IP20	$38.73	View

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