Air Circuit Breaker - ACB

DW1 - 1600 Air Circuit Breaker (ACB/Universal Circuit Breaker) Fixed & Drawer Type

DW1-1600 belongs to DW1 series mainstream low-voltage ACB, designed for 50Hz, 380V/660V power distribution systems, serving as core main switch for Large workshop distribution, high-rise building distribution room, industrial equipment main power. It integrates complete circuit protection, dual installation modes, and stable operation performance, fully compliant with GB/T 14048.1/2 & IEC 60947-1/2 standards.

DW1 Series Universal Air Circuit Breaker (ACB) – Model & Application Scenario

Series Model	Frame Current (In)	Rated Working Voltage	Typical Application Scenarios
DW1-1000	1000A	AC 380V/660V 50Hz	Medium power distribution, factory workshop main switch, commercial building power supply
DW1-1600	1600A		Large workshop distribution, high-rise building distribution room, industrial equipment main power
DW1-2000	2000A		Industrial park distribution, large shopping mall, hospital main power system
DW1-3200	3200A		Factory substation, industrial production line, large data center auxiliary power
DW1-4000	4000A		Medium-sized substation, heavy industry workshop, commercial complex main switch
DW1-6300	6300A		Large substation, heavy industry production base, municipal power distribution network
DW2-1000	1000A	AC 380V/660V 50Hz	Upgraded medium distribution, frequency conversion equipment power, marine auxiliary power

Note: All DW1/DW2 series ACB are designed for low-voltage power distribution systems, providing overcurrent, short-circuit and under-voltage protection for power supply lines and electrical equipment.

DW1-1600 Universal Air Circuit Breaker (ACB) – Product Overview

The DW1-1600 universal air circuit breaker is a high-performance low-voltage electrical device for AC 50Hz power distribution systems, with rated working voltage of AC 380V/660V and rated frame current of 1600A. Complying with GB/T 14048.2 and IEC 60947-2 standards, it is designed with reference to advanced technologies of CHINT, DELIXI and other well-known brands, featuring higher breaking capacity and stronger load-bearing capacity than DW1-1000 model.

This product adopts an optimized modular structure, equipped with reliable thermal-magnetic or electronic tripping system, which can provide full protection against overload, short circuit, undervoltage, phase loss and other faults for power lines and large electrical equipment. With stable performance, long service life and strong environmental adaptability, it is widely used in high-power power distribution occasions such as large industrial workshops, high-rise buildings, distribution stations and industrial parks.

DW1-1600 ACB – Core Product Advantages

Higher breaking capacity: Rated ultimate short-circuit breaking capacity up to 60kA (AC 380V), suitable for high-power distribution systems with large short-circuit current.
Enhanced load capacity: Rated frame current 1600A, stable operation under heavy load for a long time, no overheating or performance degradation.
Flexible tripping selection: Standard thermal-magnetic tripping and high-precision electronic tripping are available, meeting different protection accuracy requirements.
Comprehensive fault protection: Integrates overload, short circuit, undervoltage, phase loss, and reverse power protection to ensure system safety.
Reinforced modular structure: Independent operating mechanism, contact system and tripping unit, convenient for maintenance and replacement.
High stability mechanism: Energy storage type operating mechanism, fast closing and opening speed, mechanical life up to 10,000 operations.
High protection level: Shell made of flame-retardant and heat-resistant material, protection class IP30, suitable for harsh industrial environments.
Multiple installation methods: Support fixed and draw-out type installation, compatible with standard low-voltage draw-out switch cabinets.
Intelligent interconnection: Optional remote control, signal feedback and communication functions, compatible with intelligent power distribution monitoring systems.

Main Technical Parameters

DW1-1600 ACB – Main Technical Parameters

Parameter Category	Parameter Item	DW1-1600 Specification
Basic Electrical Parameters	Rated Working Voltage (Ue)	AC 380V / AC 660V
	Rated Frame Current (In)	1600A
	Rated Frequency (f)	50Hz
Short-Circuit Breaking Capacity	Rated Ultimate Breaking Capacity (Icu) @ 380V	60kA
	Rated Service Breaking Capacity (Ics) @ 380V	40kA
	Peak Withstand Current (Icw) @ 380V	120kA
	Rated Breaking Capacity @ 660V	35kA
Tripping Characteristics	Tripping Type	Thermal-magnetic / Electronic (optional)
	Instant Tripping Current	10~14In (short circuit)
	Overload Tripping Time	Inverse time characteristic (1.05In no trip for 2h; 1.3In trip within 2h)
Mechanical Performance	Mechanical Life	10,000 times
Mechanical Performance	Electrical Life	5,000 times
Structural Parameters	Pole Number	3P / 4P
	Protection Grade	IP30
	Installation Method	Fixed type / Draw-out type
Environmental Parameters	Working Temperature	-5℃ ~ +40℃ (≤95% humidity, no condensation)
Environmental Parameters	Pollution Degree	2
Compliance Standards	National & International Standards	GB/T 14048.2, IEC 60947-2

Outline dimension and Install Dimension of drawer type

Outline dimension and install dimension of Fiexed Type

DW1-1600 ACB – Installation Instructions & Selection Guide

1. Installation Instructions

DW1-1600 ACB is suitable for fixed and draw-out installation, matching standard high-current low-voltage distribution cabinets, and must be installed vertically (verticality error ≤1°).
3P model is used for three-phase industrial power systems, 4P model is specially designed for occasions needing neutral line protection (hospitals, commercial complexes, data centers).
Use copper cables with cross-sectional area ≤150mm² for wiring, and tighten the terminal screws with torque of 10~12Nm to ensure good contact and avoid overheating.
Keep the working environment free of corrosive gas, conductive dust and strong vibration; install ventilation devices in closed high-temperature environments.
After installation, conduct a manual tripping test to verify the normal action of overload, short circuit and undervoltage protection functions.
Regular maintenance every 6 months: clean internal dust, check contact wear and operating mechanism flexibility to extend service life.

2. Selection Guide

Voltage selection: AC 380V for conventional large-scale power distribution, AC 660V for medium-voltage low-current industrial power systems.
Pole number selection: 3P for three-phase motors, pumps and other pure power equipment; 4P for mixed loads of single-phase and three-phase power.
Tripping selection: Thermal-magnetic tripping for conventional distribution; electronic tripping for occasions requiring adjustable protection parameters.
Installation selection: Fixed type for compact distribution cabinets; draw-out type for large distribution stations requiring convenient maintenance.
Function selection: Add undervoltage release for important equipment; select communication module for intelligent power distribution monitoring system.

DW1-1600 ACB – Typical Application Scenarios

Large Industrial Workshops
Heavy machinery production lines, large pump and compressor power supply, main incoming line of workshop distribution

High-rise Buildings & Commercial Complexes
Main power supply of high-rise offices, hotels, shopping malls, central air conditioning and elevator power protection

Industrial Parks & Factories
Main incoming line of factory substations, power distribution of production bases, large-scale equipment power supply

Public Infrastructure
Hospital operating room power supply, stadium power system, school and government building distribution

Large Data Centers
Auxiliary power distribution, UPS power supply protection, computer room power monitoring system

Other High-power Scenarios
Construction site main power, port and wharf power distribution, marine land power supply system