Which EPS models are currently listed?
The website lists EPS-SD-4301, EPS-SP-4303, EPS-SP-5303, EPS-ST-4304/4308/4310, EPS-ST-5304/5308/5310 and EPS-ST-63100.

EPS Series
EPS emergency lighting power supply series, automatically switches to battery power when mains power is interrupted, ensuring uninterrupted fire emergency lighting. Compliant with national fire safety standards.
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Inquire About This Product →| Available Models | EPS-SD-4301 / EPS-SP-4303 / EPS-SP-5303 / EPS-ST-4304~5310 / EPS-ST-63100 |
| Input Voltage | AC 220V 50Hz |
| Output Voltage | AC 220V / DC 36V (varies by model) |
| Transfer Time | ≤ 0.25s |
| Protection | Overcharge/over-discharge/short-circuit/over-temperature protection |
This page brings together the available Sanyi Power EPS-SD, EPS-SP and EPS-ST documents across the 43, 53 and 63 series. Selection should verify input and output form, load, output circuits, transfer time, battery and target runtime. Final limits must be checked in the exact model datasheet.
Identify the emergency-lighting, security or other load, then confirm AC or DC output, voltage and total load.
The catalogue includes SD, SP and ST constructions with different circuit counts. Select from wiring and maintenance needs, not from the series number alone.
The catalogue lists a transfer time of no more than 0.25 seconds. Runtime also depends on load, battery capacity and condition, losses and temperature.
Download the exact PDF and check wiring, dimensions, environment, protection and project requirements before ordering.
The website lists EPS-SD-4301, EPS-SP-4303, EPS-SP-5303, EPS-ST-4304/4308/4310, EPS-ST-5304/5308/5310 and EPS-ST-63100.
No. Output form, transfer method, load profile and system purpose may differ. They cannot be substituted by name alone.
Compare output form, circuit count, load and installation requirements in the exact datasheet. The series number alone is not a specification.
Runtime depends on load, battery voltage and capacity, conversion efficiency, wiring loss, battery condition and temperature.
2026-09-16
A datasheet-based guide to mains/battery transfer, 13.5V/27V float charging, wiring checks and commissioning for EPS-SD-4301, EPS-SP-4303, EPS-ST-4304, EPS-ST-4308 and EPS-ST-4310.
2026-09-14
A practical 43 Series EPS selection guide for emergency lighting and security backup projects: 12V/24V systems, 1–10 outputs, load current, battery sizing and mains/battery transfer requirements.
2026-04-24
A facility-focused comparison of EPS (Emergency Power Supply) and UPS (Uninterruptible Power Supply) for emergency lighting, fire-safety loads, and critical IT — covering code requirements, runtime, transfer time, sizing, and how to avoid specifying the wrong system.
EPS Emergency Lighting Power Supply
EPS Series