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Mean Well HEP-1000-48 Power Supply 1008W 48V 21A

fanless designhigh efficiency up to 96%rugged metal case with IP65 design(IP68 option available)withstand 10G vibrationsuitable for harsh environment
SKU HEP-1000-48
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Model

Select model — 15 in this family

HEP-1000-48
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Overview

HEP-1000-48 is the 48V output model of this series: rated current 21A, rated power 1008W, typical efficiency 96%.

HEP-1000 is a 1000W industrial AC/DC power supply featuring the outstanding capability to operate under highly humid, dusty, oily, and high-vibration harsh environment. The entire series is housed with the aluminum case and fully potted with heat-conducted glue. Adopting the full range 90~305Vac input, the entire series provides an output voltage line of 24V, 48V and 100V. In addition to the high efficiency up to 96%, that the whole series operates from -40℃ ~ +70℃ under air convection without fan. HEP-1000 has the complete protection functions and 10G anti-vibration capability; It is complied with the international safety regulations such as TUV BS EN/EN62368-1 UL62368-1, and the design refers to BS EN/EN61558-1 and BS EN/EN60335-1HEP-1000 series serves as a high performance power supply solution for various industrial and charger applications.

Features

  • 90 ~ 305Vac input with PFC
  • Power or charger mode switchable by SBP-001(Terminal type)
  • High efficiency up to 96%
  • Aluminum case fanless design and filling with heat-conducted glue and able to withstand 10G vibration test
  • Wide operating temperature range -40 ~ +70℃
  • Charger for lead-acid batteries (flooded, Gel and AGM) and Li-ion batteries (lithium iron and lithium manganese)
  • Built-in default 2/3 stage charging curves and programmable curve
  • Built-in PMBus (Terminal type) / CANBus protocol
  • Output voltage and constant current level programmable
  • Protections: Short circuit / Overload / Over voltage / Over temperature
  • Built-in remote ON-OFF control (Terminal type)
  • DC OK active signal and 12V Auxiliary power available
  • LED indicator for power on (Terminal type)
  • IP67 design for indoor or outdoor installation (Wiring type)
  • 6 years warranty

Specifications

HEP-1000-48Specifications from the official datasheet (2026-06-12 edition)

OUTPUT

DC VOLTAGE
48V
RATED CURRENT
21A
RATED POWER
1008W
RIPPLE & NOISE (max.)Note.2
250mVp-p
VOLTAGE ADJ. RANGE
By built-in potentiometer, SVR
VOLTAGE ADJ. RANGE
48 ~ 60V
VOLTAGE TOLERANCENote.3
±1.0%
LINE REGULATION
±0.5%
LOAD REGULATION
±0.5%
SETUP, RISE TIME
1800ms, 80ms at full load 230Vac /115Vac
HOLD UP TIME (Typ.)
16ms / 230Vac at 75% load 12ms / 230Vac at full load

INPUT

VOLTAGE RANGENote.4
90 ~ 305Vac 250 ~ 431Vdc
FREQUENCY RANGE
47 ~ 63Hz
POWER FACTOR (Typ.)
PF>0.99/115Vac, PF>0.95/230Vac, PF>0.93/277Vac at full load
EFFICIENCY (Typ.)
96%
AC CURRENT (Typ.)
10.1A / 115Vac 5.3A / 230Vac 4.5A / 277Vac
INRUSH CURRENT(Typ.)
Cold start 40A at 230Vac
LEAKAGE CURRENT
<0.75mA / 240Vac

PROTECTION

OVERLOAD
105~125% rated current Protection type : Constant current limiting, shut down O/P voltage after 5 sec. After O/P voltage falls, re-power on to recover
SHORT CIRCUIT
Constant current limiting, unit will shutdown after 5 sec, re-power on to recover
OVER VOLTAGE
60 ~ 70V Protection type :Shut down O/P voltage,re-power on to recover
OVER TEMPERATURE
Protection type :Shut down O/P voltage, recovers automatically after temperature goes down

FUNCTION

OUTPUT VOLTAGE PROGRAMMABLE(PV)Note 5
Adjustment of output voltage is allowable to 50 ~ 125% of nominal output voltage Please refer to the Function Manual.
OUTPUT CURRENT PROGRAMMABLE(PC)Note 5
Adjustment of constant current level is allowable to 20 ~ 100% of rated current. Please refer to the Function Manual.
REMOTE ON/OFF CONTROL
Power ON : Short circuit Power OFF : Open circuit
AUXILIARY POWER
12V @ 0.5A tolerance ±10%, ripple=150mVp-p
DC-OK SIGNAL
The TTL signal out, PSU turn on = 4.4 ~ 5.5Vdc ; PSU turn off = -0.5 ~ 0.5Vdc. Please refer to the Function Manual.

ENVIRONMENT

WORKING TEMP.
-40 ~ +70℃ (Refer to "Derating Curve")
WORKING HUMIDITY
20 ~ 95% RH non-condensing
STORAGE TEMP., HUMIDITY
-40 ~ +80℃, 10 ~ 95% RH non-condensing
TEMP. COEFFICIENT
±0.03%/℃ (0 ~ 50℃)
VIBRATION
20 ~ 500Hz, 10G 12min./1cycle, period for 72min. each along X, Y, Z axes

SAFETY & EMC (Note.7)

SAFETY STANDARDS
UL62368-1, TUV BS EN/EN62368-1, BIS IS13252(Part1): 2010/IEC 60950-1:2005(NOTE 9), EAC TP TC 004 approved; design refer to BS EN/EN61558-1, BS EN/EN60335-1(by request)
WITHSTAND VOLTAGE
I/P-O/P:3KVac I/P-FG:2KVac O/P-FG:1.25KVac
ISOLATION RESISTANCE
I/P-O/P, I/P-FG,O/P-FG:100M Ohms/500Vdc/25℃/ 70%RH
EMC EMISSION
ParameterStandardTest Level
ConductedBS EN/EN55032 (CISPR32)Class B
RadiatedBS EN/EN55032 (CISPR32)Class B
Harmonic CurrentBS EN/EN61000-3-2Class A
Voltage FlickerBS EN/EN61000-3-3
EMC IMMUNITY

BS EN/EN55024 , BS EN/EN61000-6-2

ParameterStandardTest Level
ESDBS EN/EN61000-4-2Level 3, 8KV air; Level 2, 4KV contact
RadiatedBS EN/EN61000-4-3Level 3
EFT / BurstBS EN/EN61000-4-4Level 3
SurgeBS EN/EN61000-6-22KV/Line-Line 4KV/Line-Earth
ConductedBS EN/EN61000-4-6Level 3
Magnetic FieldBS EN/EN61000-4-8Level 4
Voltage Dips and InterruptionsBS EN/EN61000-4-11>95% dip 0.5 periods, 30% dip 25 periods, >95% interruptions 250 periods

OTHERS

MTBF
583.7K hrs min. Telcordia SR-332 (Bellcore) ; 52.3K hrs min. MIL-HDBK-217F (25℃)
DIMENSION
310*144*48.5mm (L*W*H)
PACKING
4Kg;4pcs/18.25Kg/1.04CUFT

BATTERY CHARGER MODE OUTPUT (Can be configured to charger mode by PMBus, CANBus or SBP-001)

BOOST CHARGE VOLTAGE Vboost
57.6V
FLOAT CHARGE VOLTAGE Vfloat
55.2V
RECOMMENDED BATTERY CAPACITY(AMP HOURS)Note 2 (charger mode): This is Mean Well's suggested range. Please consult your battery manufacturer for their suggestions about maximum charging current limitation.
60 ~ 175AH
BATTERY TYPE
Open & Sealed Lead Acid
OUTPUT CURRENT
17.5A

BATTERY CHARGER MODE SAFETY & EMC (Note.5)

SAFETY STANDARDS
UL62368-1,TUV BS EN/EN62368-1, EAC TP TC 004 approved; design refer to BS EN/EN61558-1, BS EN/EN60335-1(by request)
EMC EMISSION
ParameterStandardTest Level
ConductedBS EN/EN55032 (CISPR32)Class B
RadiatedBS EN/EN55032 (CISPR32)Class A
Harmonic CurrentBS EN/EN61000-3-2Class A
Voltage FlickerBS EN/EN61000-3-3
Test conditions and notes9
  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 0.1uf & 47uf parallel capacitor.
  3. 3. Tolerance :includes set up tolerance, line regulation and load regulation.
  4. 4. Derating may be needed under low input voltages. Please check the derating curve for more details.
  5. 5. PV/PC functions when users do not use SVR.
  6. 6. In power mode: When O/P voltage is below < 80% of Vset for 5 sec. the unit will shut down afterwards.
  7. 7. 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 720mm*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)
  8. 8. 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).
  9. 9. Some model may not have the BIS logo, please contact your MEAN WELL sales for more information.

Technical drawings

HEP-1000-48 SPECIFICATION FOR BATTERY CHARGER MODE(Can be configured…
SPECIFICATION FOR BATTERY CHARGER MODE(Can be configured…
HEP-1000-48 BLOCK DIAGRAM
BLOCK DIAGRAM
HEP-1000-48 DERATING CURVE
DERATING CURVE
HEP-1000-48 TABLE OF FUNCTION
TABLE OF FUNCTION
HEP-1000-48 FUNCTION MANUAL
FUNCTION MANUAL
HEP-1000-48 HEP-1000 series
HEP-1000 series
HEP-1000-48 5.Remote ON-OFF Control (Terminal type)
5.Remote ON-OFF Control (Terminal type)
HEP-1000-48 6.DC-OK Signal
6.DC-OK Signal
HEP-1000-48 ◎ To exploit the temperature compensation function,…
◎ To exploit the temperature compensation function,…
HEP-1000-48 MECHANICAL SPECIFICATION
MECHANICAL SPECIFICATION
HEP-1000-48 ※W-Type (Wiring type)
※W-Type (Wiring type)
HEP-1000-48 ※W-Type (Wiring type) (2)
※W-Type (Wiring type) (2)
HEP-1000-48 ※W-Type (Wiring type with charger)
※W-Type (Wiring type with charger)
HEP-1000-48 ※W-Type (Wiring type with charger) (2)
※W-Type (Wiring type with charger) (2)
HEP-1000-48 ※W-Type (Wiring of WPM/WCAN)
※W-Type (Wiring of WPM/WCAN)
HEP-1000-48 ※W-Type (Wiring of WPM/WCAN) (2)
※W-Type (Wiring of WPM/WCAN) (2)

Typical applications

  • Industrial automation machinery
  • Industrial control system at harsh environment
  • Mechanical and electrical equipment
  • Electronic instruments, equipments
  • 5G telecom equipments
  • Robotic lawn mower/AMR/AGV
  • Equipments or instruments with back-up battery

Downloads

FAQ

Can I use the HEP-1000-48 for a 48V industrial or telecom-style DC system?

Yes, if the load requires constant-voltage 48V DC and stays within 21A and 1008W. Those specs fit higher-power 48V industrial, communications, embedded, and automation systems that are designed for a 48V DC bus.

Is the HEP-1000-48 suitable for a centralized 48V power architecture?

It is designed for exactly that kind of constant-voltage 48V application, with 1008W total output capacity and 21A available. That gives it enough capacity for larger centralized 48V systems.

Can this supply handle demanding 48V automation equipment in a rugged enclosure?

It can support 48V DC equipment up to 21A and 1008W, and the IP67-rated HEP-1000 series is built for harsh environments. Mean Well also lists 10G vibration tolerance and 96% typical efficiency, which are relevant in industrial enclosures and field equipment.

Is the HEP-1000-48 rated for outdoor operation?

Yes, it has an IP67 rating, so it is suited to outdoor and wet environments where dust and water exposure are concerns. Its operating temperature range is -40°C to +70°C (refer to the derating curve) for cold and hot site conditions.

What are the output differences across the HEP-1000 models?

The listed HEP-1000 variants are 24V at 42A and 1008W, 48V at 21A and 1008W, and 100V at 10A and 1000W. The HEP-1000-48 sits between the 24V and 100V versions in output voltage, and its 21A output current is between the 42A and 10A figures of those two models.

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Mean Well HEP-1000-48 Power Supply 1008W 48V
Mean Well

Mean Well HEP-1000-48 Power Supply 1008W 48V 21A

HEP-1000-48 is the 48V output model of this series: rated current 21A, rated power 1008W, typical efficiency 96%.

HEP-1000 is a 1000W industrial AC/DC power supply featuring the outstanding capability to operate under highly humid, dusty, oily, and high-vibration harsh environment. The entire series is housed with the aluminum case and fully potted with heat-conducted glue. Adopting the full range 90~305Vac input, the entire series provides an output voltage line of 24V, 48V and 100V. In addition to the high efficiency up to 96%, that the whole series operates from -40℃ ~ +70℃ under air convection without fan. HEP-1000 has the complete protection functions and 10G anti-vibration capability; It is complied with the international safety regulations such as TUV BS EN/EN62368-1 UL62368-1, and the design refers to BS EN/EN61558-1 and BS EN/EN60335-1HEP-1000 series serves as a high performance power supply solution for various industrial and charger applications.

Features

  • 90 ~ 305Vac input with PFC
  • Power or charger mode switchable by SBP-001(Terminal type)
  • High efficiency up to 96%
  • Aluminum case fanless design and filling with heat-conducted glue and able to withstand 10G vibration test
  • Wide operating temperature range -40 ~ +70℃
  • Charger for lead-acid batteries (flooded, Gel and AGM) and Li-ion batteries (lithium iron and lithium manganese)
  • Built-in default 2/3 stage charging curves and programmable curve
  • Built-in PMBus (Terminal type) / CANBus protocol
  • Output voltage and constant current level programmable
  • Protections: Short circuit / Overload / Over voltage / Over temperature
  • Built-in remote ON-OFF control (Terminal type)
  • DC OK active signal and 12V Auxiliary power available
  • LED indicator for power on (Terminal type)
  • IP67 design for indoor or outdoor installation (Wiring type)
  • 6 years warranty

Typical applications

  • Industrial automation machinery
  • Industrial control system at harsh environment
  • Mechanical and electrical equipment
  • Electronic instruments, equipments
  • 5G telecom equipments
  • Robotic lawn mower/AMR/AGV
  • Equipments or instruments with back-up battery

Model

  • 100W 48V
  • 100W 48V Adjustable
  • 1000W 48V
  • 150W 48V
  • 150W 48V Adjustable
  • 185W 48V
  • 185W 48V Adjustable
  • 240W 48V
  • 240W 48V Adjustable
  • 320W 48V
  • 320W 48V Adjustable
  • 480W 48V
  • 480W 48V Adjustable
  • 600W 48V
  • 600W 48V Adjustable
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