Changshu Switchgear CAP3 Series Automatic Transfer Switch Installation Guide

The CAP3 series ATSE is a PC‑level automatic transfer switch for 50/60 Hz AC230/240 V or AC400/415 V, rated 16 A‑4000 A, offering millisecond switching and…


Changshu Switchgear CAP3 Series Automatic Transfer Switch Installation Guide - cover page
Brand
Changshu Switchgear
Document type
Installation Guide
Language
Chinese
Pages
75
File format
PDF
File size
21 MB
Published
29 September, 2026
Updated
29 September, 2026
MD5 checksum
2F09F53F51DAAB932369F3664D01482A

About this manual

The CAP3 series automatic transfer switch (ATSE) from Changshu Switchgear is designed for critical power supply applications such as data centers, hospitals, airports and industrial plants. It operates on 50/60 Hz AC systems, supports voltages of AC230/240 V and AC400/415 V, and handles currents from 16 A up to 4000 A, providing continuous and reliable power by quickly switching between sources.

The guide covers product overview, normal operating conditions, mechanical structure, detailed technical specifications, functional features, model designations, installation clearances, wiring diagrams, conductor sizing, torque requirements and ordering instructions. It also describes the smart communication options (DeviceNet, Profibus‑DP, CAN, TCP/IP, WIFI) and cloud connectivity. This manual is written in Chinese.

What's inside

  • Overview
  • Normal Operating Conditions
  • Structure Overview
  • Technical Specifications
  • Function Introduction
  • Model Designations
  • Installation Clearance and Dimensions
  • Electrical Wiring
  • Conductor Size and Torque
  • Ordering Information

Specifications

Rated VoltageAC230/240 V (2‑pole) / AC400/415 V (3‑/4‑pole)
Rated Current Range16 A – 4000 A
Switching Time<50 ms for 125/250/630/1600 frames, <75 ms for 4000 frame

Frequently asked questions

What voltage levels does the CAP3 series support?

It supports AC230/240 V for 2‑pole units and AC400/415 V for 3‑ or 4‑pole units.

How fast can the CAP3 series switch between power sources?

The contact switching time is less than 50 ms for 125, 250, 630 and 1600 frames, and less than 75 ms for the 4000 frame.

Which communication protocols are available on the CAP3 series?

The device can communicate via DeviceNet, Profibus‑DP, CAN, TCP/IP and WIFI, and can be connected to cloud platforms.

How should I specify a CAP3 order for a 200 A, 4‑pole, iH controller, three‑position unit?

Write the order as “CAP3‑200/4iHⅢF” followed by the quantity.

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