MT 1600A Fixed-Type Air Circuit Breaker for Low-Voltage Switchgear Suppliers, Factory - Zhejiang Mingtuo Electrical Technology Co., Ltd.

MT 1600A Fixed-Type Air Circuit Breaker for Low-Voltage Switchgear

Description: Product Overview

The MT Series Draw-Out Air Circuit Breaker is designed for low-voltage main distribution systems that require high current capacity, operational flexibility, and reliable protection performance. With a withdrawable structure, the breaker can be safely inserted, withdrawn, or isolated without disconnecting the main wiring, making inspection and maintenance more efficient.

Covering a rated current range from 2000A to 3200A, this series is suitable for use as a main incoming breaker or heavy-duty feeder breaker in industrial and commercial power systems. Its air arc-extinguishing design enables stable interruption performance under overload and short-circuit conditions, helping maintain system continuity and equipment safety.

The MT Series complies with relevant low-voltage circuit breaker standards, including IEC 60947-2 and GB 14048.2, making it suitable for integration into standardized switchgear assemblies and power distribution cabinets.Widely used in photovoltaic power generation, new energy industrial and mining enterprises, AI data centers, power plants, aluminum production plants.

Applications:

Draw-out air circuit breakers in the MT Series are widely used in low-voltage power distribution systems where high current ratings and operational reliability are required. Typical applications include:

Industrial manufacturing plants

Commercial and mixed-use buildings

Data centers and critical facilities

Hospitals and public infrastructure

Power distribution panels and switchgear systems

Their withdrawable design makes them especially suitable for installations that require routine maintenance, system upgrades, or reduced downtime.

ACB
ACB Installation
ACB Installation And Test
Double Circuit Breakerswitching Cabinet
Working Principle
Moving And Static Contact
ACB Machanism

When the product is in the closed and powered on state, if there is overload or short circuit, undervoltage or phase loss in the circuit, the current transformer in the ACB will detect the current signal, which will be transmitted to the controller. The controller will then send a command to the mechanism to trip, causing the dynamic and static contacts to separate and disconnect, and the product will open, achieving the function of protecting the backend load.

Dual power supply realizes mechanical and electrical interlocking, switching between two power supply lines. When the mains power is available, the circuit breaker of the mains power is closed, but the power generation cannot be closed. When the mains power is cut off, the generator generates power, and the circuit breaker of the power generation line is closed, but the mains power cannot be closed. Only one of the two power sources can be closed.

Product Debugging
Product Debugging
Product Debugging
ACB
Working Principle
ACB Machanism
Double Circuit Breakerswitching Cabinet
Moving And Static Contact
ACB installation And Test

ACB Closing/Opening - Energy Storage - Overload - Short Circuit - Undervoltage Testing
ACB Closing/Opening - Energy Storage - Overload - Short Circuit - Undervoltage Testing
ACB Closing/Opening - Energy Storage - Overload - Short Circuit - Undervoltage Testing
ACB Closing/Opening - Energy Storage - Overload - Short Circuit - Undervoltage Testing
ACB Closing/Opening - Energy Storage - Overload - Short Circuit - Undervoltage Testing

To ensure transportation safety, our electrical products are exported in reinforced wooden crates. The crates undergo heat treatment and bear the ISPM-15 mark, enabling swift customs clearance. The raised base design facilitates forklift operation, while internal shock-absorbing fastening ensures the products arrive intact. All exterior crates are clearly labeled and comply with international logistics standards.

High And Low Voltage Switchgear ACB MCCB VCB
Box-Type Substation Uses Our VCB, MCCB, and ACB
High And Low Voltage Cabinets Successfully Powered

Photovoltaic Grid-Connected Cabinet Utilising ACB and MCCB
Power transmission successful
Box-typesubstation ACB VCB MCCB
Box-typesubstation ACB VCB MCCB
Box-typesubstation ACB VCB MCCB
Application Scenario Footage
Power transmission successful
Power transmission successful
Photovoltaic Grid-Connected Cabinet Utilising ACB and MCCB
Photovoltaic Grid-Connected Cabinet Utilising ACB and MCCB
Box-typesubstation ACB VCB MCCB

Rated circuit breaker ampere meter see Table 1.

Shell grade rated current Inm A	Rated current in A
2000	630、800、1000、1250、1600、2000
3200	2000、2500、2900、3200
4000	3200、3600、4000
6300	4000、5000、6300

Breakers of rated short circuit breaking capacity and short-time withstand current see Table 2, circuit breakers arcing distance as "zero" (that is, outside the circuit breaker no flying no ARC), as shown in Table 2.

Shell grade rated current Inm A		2000	3200	4000	6300
Rated limited short-circuit breaking capacity Icu O-CO (KA)	400V	80	100	100	125
Rated limited short-circuit breaking capacity Icu O-CO (KA)	690V	50	65	65	85
Rated short-circuit making capacity (KA) NX Icu/cosO	400V	176/0.2	220/0.2	220/0.2	264/0.2
Rated short-circuit making capacity (KA) NX Icu/cosO	690V	105/0.25	143/0.2	143/0.2	187/0.2
Rated short-circuit breaking capacity Ics O-CO-CO (KA)	400V	50	65	65	100
Rated short-circuit breaking capacity Ics O-CO-CO (KA)	690V	40	65	65	75
Rated short-time withstand current 1s delay 0,4s O-CO (KA)	400V	50	65	65/80(MCR)	85/100(MCR)
Rated short-time withstand current 1s delay 0,4s O-CO (KA)	690V	40	50	50/65(MCR)	65/75(MCR)
Note: The line-breaking capacity is the same.

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Wholesale MT 1600A Fixed-Type Air Circuit Breaker for Low-Voltage Switchgear

MT 1600A Fixed-Type Air Circuit Breaker for Low-Voltage Switchgear