Must EH55-H1K3 1kVA/1kW Online UPS, Double Conversion, 0ms Transfer, 3 x 12V 7Ah

Write the first reviewModel EH55-H1K3SKU MUST-EH55H1K3

৳22,500

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Key features

Model: EH55-H1K3
Capacity: 1kVA / 1kW
Topology: Double conversion online, active PFC
Input Range: 110–300V AC
Battery: 36V (3 x 12V 7Ah lead-acid)
Noise: 45dB or less
Weight: 10 kg

DeliveryAll over Bangladesh · charge shown at checkout
1 year warrantyOfficial, claim online
Store pickupElephant Road, Dhaka

Specification

Capacity

Rated Capacity: 1kVA / 1kW

Input

Nominal Input: 208/220/230/240V AC
Input Voltage Range: 110–300V AC
Frequency: 50/60Hz ±6Hz (default), ±10Hz settable

Output

Output Voltage: 208/220/230/240V AC
Transfer Time: Zero on double conversion (4ms stated in shop listing)
Overload (AC mode): 30 min at 102–110%, 10 min at 110–130%, 30 s at 130–150%
Overload (Battery mode): 10 min at 102–110%, 1 min at 110–130%, 10 s at 130–150%

Battery

Battery Type: Lead-acid
Battery Voltage: 36V (3 x 12V 7Ah)
Full-load Runtime: About 3–5 minutes

Features

Control: DSP digital control, active PFC
Cold Start: Yes, starts from battery without mains
Display: Segment display with 4 buttons and 4 LEDs
Noise: 45dB or less

Physical

Dimensions: 143 x 222 x 354 mm
Weight: 10 kg

Warranty

Manufacturer Warranty: 1 year (box required for claims)

Description

Must EH55-H1K3 1kVA Online UPS

Find the Must EH55-H1K3 online UPS price in BD on this page. The EH55-H1K3 is a double-conversion online UPS: incoming power is converted to DC and back to clean AC all the time, so connected equipment never sees a break, spike or sag when the grid fails.

1kVA with a full 1kW rating

The EH55-H1K3 delivers 1kVA and 1kW, so you can use its full rated capacity for real loads such as a desktop workstation with monitor, a small server, or a network rack with a router, switch and NVR.

Handles unstable mains

Its wide 110–300V input range lets it keep running from mains even when voltage drops heavily or rises, saving the battery for real outages. Active power factor correction and DSP digital control keep it efficient and stable, and it can cold-start from battery when there is no grid power at all.

Battery and runtime

36V DC bus using three 12V 7Ah lead-acid batteries
About 3 to 5 minutes at full load, enough for a safe shutdown
Longer runtime at lower loads

Overload tolerance

In mains mode it carries 102–110% load for 30 minutes and 110–130% for 10 minutes before protecting itself; in battery mode the limits are shorter. That margin helps when a PC or printer draws a brief surge at start-up.

Quiet and compact

At 45dB or less it is quiet enough for an office. It measures 143 x 222 x 354 mm and weighs 10 kg, with a front panel that shows operating mode, load and input/output status.

Warranty care

The 1-year warranty requires the original box when claiming. Keep the UPS in a cool, dry, dust-free place and protect it from lightning, as these are excluded from cover.

Buy from QASWATEC

QASWATEC sells genuine Must online UPS units with an invoice. Visit our showroom on Elephant Road, Dhaka, for advice on load and backup, or order online for delivery across Bangladesh.

Questions about this product

Is the Must EH55-H1K3 a true online UPS?

Yes. The Must EH55-H1K3 uses double conversion online design with DSP control and active PFC.

What batteries does the Must EH55-H1K3 use?

The Must EH55-H1K3 uses a 36V lead-acid battery set made of three 12V 7Ah batteries.

How long does the Must EH55-H1K3 run at full load?

At full 1kW load the Must EH55-H1K3 runs for about 3 to 5 minutes, enough for a safe shutdown; lighter loads run longer.

What input voltage range does the Must EH55-H1K3 accept?

The Must EH55-H1K3 works from 110–300V AC input, which helps with low or high mains voltage.