High-efficiency K19H-UP1000S Series switching mode power supply with 48VDC output, 21A rated current, and 1008W power in a compact 214 × 82 × 48mm enclosure. Featuring 90–264VAC universal input, up to 93% efficiency, active PFC, and comprehensive protection functions, it is ideal for industrial automation, control cabinets, embedded systems, and reliable switching power applications.

Input Current

5A/230Vac 11A@110Vac

Input Voltage Rage

90V~264V AC

Output Rated Current

21A

Output Voltage

+48V DC

Rated Power

1008W

Output Adjustable Range

±5%

Output Accuracy

±1%

Efficiency @230Vac

93%

Size/Weight

214*82*48mm(L*W*H)/1.2Kg

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Description

30-Second Fit Check

Output class: 48VDC, 21A (1008W).
AC input: 90–264VAC (rated input voltage listed 100–240VAC), 50–60Hz.
Efficiency: 93% @230VAC (listed).
Ripple & noise: 480mVp-p.
Trim range: ±5% adjustable output.
Terminal style (listed): 48V is above 28V, so output uses 4P (8.25) terminal; input terminal 3P-8.25.

What It Is + Why It Matters

1kW-class open-frame SMPS for 48V industrial rails where power density and universal input matter.
Defined protection behavior supports predictable commissioning and service (lock-style short/OVP requires power-off reset time).
4P output terminal arrangement (listed) aligns with higher-voltage distribution inside equipment.
Active PFC is listed for improved AC-side power factor behavior.

Key Specs

Rated output: 48V, 21A; 1008W.
Ripple & noise: 480mVp-p.
Accuracy/regulation: ±1% accuracy; line ±0.5%; load ±0.5%.
Input: 90–264VAC; input current 5A @230VAC / 11A @110VAC; inrush 60A @230VAC.
Power factor (listed): PF >0.98 @100V; PF >0.95 @230V.
Leakage: <0.75mA @240V.
Timing: 500ms/30ms/5ms @115VAC; 300ms/30ms/10ms @230VAC (setup/rise/hold).
Mechanical: 214×82×48mm; 1.2kg; MTBF >50k hrs (MIL-HDBK-217F, 25°C) listed.
Operating environment: -20 to 60°C; 10–90% RH (non-condensing).

Integration & Controls

Terminals (listed): input 3P-8.25; output 4P (8.25) for voltages above 28V.
Brown-out: ≤70VAC auto recovery (listed).
Thermal behavior: shell temp >115°C output off; automatic recovery (listed).
Service planning: short/OVP protections lock and require power off for 5 minutes to restore.

Best For / Not For

Best for: 48V industrial control and automation systems, equipment-level 48V rails up to 21A.
Not for: fault-intolerant systems that cannot accept a lock/reset workflow after short/OVP events.
Not for: installs requiring an enclosed PSU without additional chassis/enclosure design.

Typical Applications

Industrial control and automation systems
Equipment-level 48V DC distribution
High-power rails in cabinets and chassis
Universal-input deployments

Selection Checklist

Confirm output requirement: 48V / 21A with peak headroom.
Confirm ripple tolerance: 480mVp-p.
Confirm terminal fit: 4P (8.25) output terminal arrangement.
Confirm upstream circuit capacity for 1kW-class load and listed inrush.
Confirm ops/service acceptance of lock-style recovery time after protection events.
Plan airflow/clearance for open-frame integration.

RFQ Quick Checklist: qty, target ship date, mains voltage, load profile, terminal/wire constraints, enclosure airflow notes, documentation needs.
Note: final compliance and performance depend on end-product design and verification testing.

Reliability, Protections & Standards

Overload: 105–150% hiccup, automatic recovery.
Short circuit: lock; restore after power off for 5 minutes.
Over-voltage: Vout 120%–140% lock; restore after power off for 5 minutes.
Safety standards: GB4943, EN 60950-1, EN 62368-1.
EMC standards: GB/T9254-2008, GB17625.1-2012, EN 55032 Class B, EN 61000-3-2.
Withstand voltage: I/P–O/P 3kV; I/P–FG 1.8kV; O/P–FG 0.6kVAC, 1 min.
Insulation resistance: 500VDC / 50MΩ.