WESPC Original HAT553 Dual Power ATS Controller Auto Start Genset Panel

Technical Specifications:

• Display: 132×64 pixel LCD

• Language Interface: Chinese & English

• Programmable Inputs: 4 channels

• Programmable Outputs: 6 channels

• AC System Support: 1P2W / 2P3W / 3P4W

• Alternator Frequency: 50Hz / 60Hz

• Voltage & Frequency Protection: Supported

• Monitoring Interface: RS485

• Programming Interface: RS485

• Real-Time Clock (RTC): Integrated

• Scheduled Genset Start: Supported

• Applicable Switch Types: Two-stage / Three-stage

• Controller Dimensions: 139 × 120 × 50 mm

• Panel Cutout Size: 130 × 111 mm

• Operating Temperature Range: –25°C to +70°C

Product Overview:

The HAT552/HAT553 Dual Power ATS Controller is a high-performance automatic transfer module that integrates configurable logic, real-time measurement, LCD display, and digital communication. It combines digital intelligence and networking to automate power switching and reduce manual errors—making it an ideal solution for dual power systems.

• HAT552 is designed for non-breaking switches

• HAT553 supports non-breaking, one-breaking, and two-breaking switch types

Powered by a microprocessor, the controller accurately measures dual 3-phase voltages and responds to abnormalities such as over/under voltage, phase loss, frequency deviation, and reverse phase sequence. Its compact structure, advanced circuitry, and simplified wiring make it highly reliable and suitable for applications in power systems, telecom, petroleum, coal, metallurgy, railways, municipal infrastructure, and smart buildings.

Performance & Features:

• System modes configurable for:

  • Mains → Generator

  • Generator → Mains

  • Mains → Mains

• 132×64 backlit LCD with Chinese/English interface and push-button operation

• Real-time measurement of dual 3-phase voltage, frequency, and phase sequence

• Displays accumulated close times for A/B power sources

• Tracks current power supply duration and total runtime for A/B sources

• Protection functions include:

  • Over/under voltage

  • Phase loss

  • Reverse phase sequence

  • Over/under frequency

• Auto/Manual transfer modes with manual override for switch control

• All parameters are user-configurable with password protection to prevent unauthorized access

• On-site commissioning supported for manual genset start/stop

• Built-in switch re-closing function

• Breaker output configurable as pulse or continuous signal

• Dual-channel neutral wire isolation design

• RTC display and event log memory (up to 50 cyclic records)

• Scheduled genset start/stop: configurable for monthly/weekly cycles with on-load/off-load options

• AC input range: phase voltage (L–N) 170–277V

• RS485 isolated communication port with ModBus-RTU protocol

  • Supports remote control, monitoring, communication, and parameter adjustment

  • Remote commands include genset start/stop and ATS close/open

• Compatible with multiple AC systems:

  • 3-phase 4-wire

  • Single-phase 2-wire

  • 2-phase 3-wire

• Modular design with flame-retardant ABS enclosure

• Pluggable terminals and embedded mounting for easy installation

WESPC(Dongguan)Tech Co., Ltd. is a wholly-owned subsidiary of WESPC Hong Kong.

The company has long been deeply engaged in the Perkins aftermarket spare parts sector, while also covering a wide range of multi-brand engines and related components. With years of professional expertise and a solid reputation, WESPC provides customers with diverse, one-stop solutions tailored to their needs.

Leveraging the global vision of its Hong Kong headquarters and the strategic location advantages of Dongguan, WESPC Dongguan is committed to building a highly efficient and reliable supply chain system, supported by professional technical expertise and comprehensive after-sales services, to continuously create greater value for its customers.

Looking ahead, the company will continue to expand its business landscape, keep pace with industry trends, and consistently enhance product and service quality—working hand in hand with global partners to achieve mutual growth and success.