HKS1200A3-S1 1200W Platinum 12V CRPS Power Supply

CORE ADVANTAGES

1200W Short Slot-Style Power Supply for Multi-Output Server Platforms

The HKS1200A3-S1 provides 1200W output for server systems that require a compact slot-style power module with multiple regulated output rails. It is suitable for server platforms where power delivery must support main 12V output together with auxiliary 5V, 3.3V, 5VSB, and -12V rails.

1200W Short Slot-Style Power Capacity

Multi-Output Server Power Architecture

Unlike standard single-main-rail CRPS models, this unit provides +12V / +5V / +3.3V / 5VSB / -12V multi-output support. This makes it suitable for server designs that still require several DC rails directly from the power supply module.

Platinum-Level Efficiency Design

This series has achieved 80 PLUS® Platinum certification , with peak efficiency up to 94.5% . High conversion efficiency helps reduce power loss and heat generation in server systems that operate for long periods.

Short Slot-Style Structure

With an external size of 225 × 77 × 84 mm , the HKS1200A3-S1 is designed for short slot-style installation. It is suitable for platforms where the PSU is inserted into a defined slot rather than a standard CRPS bay.

I²C Communication Support

The unit supports I²C communication , allowing system-level monitoring and control integration where the server platform supports power supply communication and status management.

Built for Practical Server Deployment

Forced air cooling, IP20 protection level, EN55022 Class A EMI performance, multi-output voltage regulation, and protection functions such as output overvoltage, undervoltage, overcurrent, short circuit, and overtemperature protection help support stable server operation.

MODEL SELECTION

Compare Huntkey power options.

Review nearby Huntkey models and select the output level and form factor that best match the target system.

Product Category	Model	Power	Output Architecture	Efficiency	Form Factor	Best-Fit Application
Slot Style Power Supply	HKS1200A3-S1	1200W	+12V / +5V / +3.3V / 5VSB / -12V	Platinum	Short slot-style	Multi-output server platforms and compact slot-based systems
Slot Style Power Supply	HK2200R-S1	2200W class	Slot-style server output architecture	Platinum series	Slot-style	Higher-power rack servers and server power shelves
Slot Style Power Supply	HK1600R-S1	1600W class	Slot-style server output architecture	Platinum series	Slot-style	Enterprise servers, storage systems, and rack platforms
Slot Style Power Supply	HK1200R-S1	1200W class	Slot-style server output architecture	Platinum series	Slot-style	Standard server platforms requiring slot-style PSU integration

DEPLOYMENT SCENARIOS

Where HKS1200A3-S1 fits best.

The HKS1200A3-S1 is designed for server systems that need multi-output DC power delivery, slot-style mechanical integration, and stable long-hour operation. It is especially suitable for platforms where +12V is not the only required output rail and the system still needs direct +5V, +3.3V, 5VSB, and -12V support from the power module.

Scenario	System Requirement	Why HKS1200A3-S1 Fits
Multi-Output Server Platforms	Direct support for 12V, 5V, 3.3V, standby, and negative rail requirements	Provides five output rails from one power module
Rack Server Systems	Stable power delivery for server boards, control circuits, fans, and auxiliary rails	1200W output supports mainstream server configurations
Storage Server Platforms	Power support for controllers, backplanes, drives, and management circuits	Multi-output architecture supports mixed rail requirements
Server Backplane Systems	Slot-based power insertion and system-level rail distribution	Short slot-style structure supports defined PSU bay integration
Industrial Server Equipment	Reliable power for embedded server boards and industrial computing systems	Forced air cooling and protection functions support long-hour operation
System Monitoring Platforms	Communication between PSU and host platform	I²C support helps with monitoring and power status integration

POWER DESIGN

Reliability notes for continuous operation.

The HKS1200A3-S1 focuses on multi-output server power delivery rather than a single 12V-only CRPS architecture. Its output structure makes it useful for server platforms that require several direct DC rails, especially where the motherboard, backplane, management controller, or auxiliary circuits need dedicated 5V, 3.3V, standby, or -12V power.

1200W rated power supports server boards, backplanes, storage controllers, cooling fans, and auxiliary circuits.
The +12V rail supports up to 82A, making it the main power output for system load.
Auxiliary outputs include +5V 25A, +3.3V 25A, 5VSB 3A, and -12V 0.5A.
Voltage regulation accuracy is listed as ≤±5%, with ripple and noise controlled at ≤120mVp-p.
Efficiency is listed as ≥94%, with the series reaching a peak efficiency of 94.5% under Platinum-level performance.
I²C communication supports power status communication with compatible server platforms.
Protection functions include output overvoltage, output undervoltage, output overcurrent, output short circuit, and overtemperature protection.
EMI performance is listed as EN55022 Class A, and the unit uses forced air cooling for stable operation.

INSTALLATION

Installation and operating guidance.

The HKS1200A3-S1 uses an IP20 protection rating and is mainly designed for server applications. Because this model uses a multi-output structure, system designers should check rail-by-rail load requirements instead of evaluating only total rated power.

Installation / Operation Item	Guidance
Input Matching	Confirm the system input supply matches the required 11.4–12.6Vdc input range
Output Rail Planning	Match the server board and backplane requirements with the available +12V, +5V, +3.3V, 5VSB, and -12V rails
Chassis Fitment	Confirm the 225 × 77 × 84 mm external dimensions before slot-style integration
Communication Setup	Use I²C communication only with compatible system monitoring and control designs
Thermal Clearance	Keep airflow channels open to support forced air cooling and avoid heat buildup
Operating Environment	Keep air temperature within 0–55°C and relative humidity within 5%–95%, with no condensation
Storage Condition	For storage and transportation, keep within -40°C to 70°C and 5%–100% RH
Protection Review	Confirm system-level fault handling for overvoltage, undervoltage, overcurrent, short circuit, and overtemperature events

FAQ

Frequently asked questions about HKS1200A3-S1.

Key answers for specification matching, installation planning, and system integration.

What type of power supply is the HKS1200A3-S1?

The HKS1200A3-S1 is a 1200W short slot-style power supply designed for server platforms that require multi-output DC power delivery.

What is the size of this model?

It has external dimensions of 225 × 77 × 84 mm , making it suitable for short slot-style server power integration.

What input voltage range does it support?

The HKS1200A3-S1 supports 11.4–12.6Vdc input and an input current listed as ≤11A .

What output does the HKS1200A3-S1 provide?

It provides +12V 82A , +5V 25A , +3.3V 25A , 5VSB 3A , and -12V 0.5A multi-output support.

How is this model different from standard CRPS power supplies?

This model uses a short slot-style structure and provides multiple DC output rails, while many CRPS server power supplies are mainly designed around a single +12V output architecture.

Does it support communication with the server system?

Yes. It supports I²C communication , which can be used for system-level monitoring and power st atus management in compatible platforms.

What protection features are included?

It includes output overvoltage, output undervoltage, output overcurrent, output short circuit, and overtemperature protection.

What applications is this model suitable for?

It is suitable for servers, multi-output server platforms, storage server systems, server backplanes, and slot-style power supply designs that require direct 12V, 5V, 3.3V, standby, and -12V rails.

HKS1200A3-S1

Built for reliable, continuous power delivery.