DINKONDA GLOBAL Power Plants Special GM51B-1600 Series Three-stage Plastic Shell DC Circuit Breaker, Large Capacity DC Long Delay/short Delay/instantaneous Short Circuit Protection Switch

DINKONDA GLOBAL Power Plants Special GM51B-1600 Series Three-stage Plastic Shell DC Circuit Breaker, Large Capacity DC Long Delay/short Delay/instantaneous Short Circuit Protection Switch

Product Overview

GM51B-1600 series three-stage molded case DC circuit breaker, large capacity DC protection switch. The product adopts a plastic shell integrated structure, integrating three stage protection functions including long delay overload protection, short delay short circuit protection, and instantaneous short circuit protection. It is specifically optimized for the fault characteristics of high-power DC systems and can achieve graded protection and fast cut-off for DC circuit overload and short circuit faults. Suitable for high-capacity DC power supply scenarios such as energy storage power stations, photovoltaic DC combiner cabinets, industrial DC distribution, DC microgrids, etc., it balances circuit current carrying, fault protection, and safety isolation, and is the core protective component of DC distribution cabinets.

Structural Composition

1. * * High strength flame-retardant plastic shell body**
The shell is made of high-pressure resistant, high-temperature resistant, flame-retardant engineering plastic injection molded in one piece, with high insulation strength, resistance to arc impact, aging resistance, and not easy to crack. Reserve one wiring terminal at the top and bottom of the shell, suitable for direct connection with copper bars. The shell structure is reinforced with heat dissipation design to reduce the temperature rise during continuous high current operation.

2. * * Three stage intelligent protection trip unit**
Built in electronic trip controller with three-stage protection logic: long delay overload protection, short delay short circuit protection, and instantaneous short circuit protection. The protection threshold can be set on site and supports fault memory. After a fault occurs, the fault type and current can be viewed for easy operation and maintenance troubleshooting.

3. * * Contact and dedicated DC arc extinguishing system**
The main contact is made of arc resistant and highly conductive alloy material to reduce contact resistance; The matching optimized DC arc extinguishing chamber divides and cools the DC arc through multiple layers of grids, solving the pain point of difficult natural extinguishing of the DC arc, greatly improving the short-circuit breaking ability, and suppressing arc reignition.

4. * * Manual operating mechanism**
The front is equipped with an exposed operating handle, and the panel is clearly marked with ON/OFF to visually display the on/off status of the switch; The mechanism is equipped with mechanical energy storage and reliable locking, with stable operation. It can manually perform opening and closing, and can be equipped with a padlock to lock the opening position, meeting the safety requirements of maintenance.

5. * * Secondary Attachment Module (optional)**
Auxiliary contacts, alarm contacts, and electric operating mechanisms can be selected as needed. Auxiliary contacts output passive switch signals, which can upload switch positions and fault alarm signals to the backend monitoring system for remote signal monitoring; The electric mechanism supports remote opening and closing control and is suitable for intelligent DC distribution projects.

Product Features

1. * * Three stage protection, achieving selective protection for DC systems**
Different from ordinary two-stage DC circuit breakers, it has long delay, short delay, and instantaneous three-stage protection. It can achieve selective coordination of time and current for upper and lower level protection, avoid indiscriminate tripping of the entire station's DC switches in case of faults, improve the stability of the DC power supply system operation, and is suitable for multi-level DC busbar distribution architecture.

2. * * Large capacity current carrying capacity, suitable for high-power DC working conditions**
The GM51B-1600 series frame has a rated current of 1600A and covers multiple rated current specifications. The conductive circuit has been optimized for low resistance and has excellent temperature rise control for long-term high current operation, meeting the continuous current requirements of energy storage battery clusters and centralized photovoltaic high-power DC circuits.

3. * * Dedicated DC arc extinguishing design with strong short-circuit breaking capability**
Design an arc extinguishing chamber structure based on the zero crossing arc characteristics of DC, quickly cool and extinguish the arc, ensure reliable disconnection in case of short circuit faults, prevent arc burning equipment, and improve the safety of DC circuit faults.

4. * * Protection parameters can be adjusted on site to adapt to diverse loads**
Electronic trip unit, overload current, short delay current, and instantaneous short-circuit current can all be set on site. Flexible matching of protection settings can be achieved based on different load characteristics such as batteries, DC motors, and DC busbars.

5. * * Modular attachments to meet the requirements of intelligent complete sets**
Accessories such as electric operation and auxiliary/alarm contacts can be installed to easily connect to the SCADA monitoring system, enabling remote transmission of switch status and fault signals, supporting remote control, and adapting to photovoltaic energy storage digital power stations.

6. * * Compact plastic shell structure, easy to install inside the cabinet**
The plastic shell fixed structure has a smaller volume compared to frame circuit breakers, occupies less cabinet space, and has standard installation holes. It can be directly assembled in DC distribution cabinets and combiner cabinets, making it convenient for integrated assembly in complete sets of factories.

7. * * Maintenance of safety locking function**
The handle supports a padlock device, which can be locked after the switch is opened to prevent accidental closing during maintenance and ensure the personal safety of on-site operation and maintenance personnel.

Technical Parameters

-Product model: GM51B-1600 series
-Product type: Three stage electronic molded case DC circuit breaker
-Rated current of the frame: 1600A
-Protection type: three-stage protection (long delay overload, short delay short circuit, instantaneous short circuit)
-Operation mode: standard manual operation; Optional electric operation
-Installation form: Fixed plastic shell installation
-Shell material: high-strength flame-retardant engineering plastic
-Optional accessories: auxiliary contacts, alarm contacts, electric operating mechanism, padlock device
-Applicable medium: Indoor DC distribution system

FAQ:
Q1.What about the lead time?
A: 5-7 days for Sample preparing ,15-20 working days for mass production.

Q2. Is it OK to print my logo on led light product?
A: Yes. Please inform us formally before our production.

Q3: Do you offer guarantee for the products?
A: Yes, we offer 1 years warranty to our products.

Q4: How to deal with the faulty?
A: Firstly, Our products are produced in strict quality control system and the defective rate will be less than 0.2%.

Secondly, during the guarantee period, we will send new lights with new order for small quantity. For defective batch products, we will repair them and resend them to you or we can discuss the solution including re-call according to real situation.

Company Profile

DINKONDA GLOBAL has been developing and supplying equipment and components for specialized thermal power plants and related industries for 20 years and is one of the a market-leading global manufacturers and providers in the industry. We have a professional technical research and development team, professional management talents and dozens of quality inspection personnel. The company has more than 50 CNC machining centers, CNC lathes, various inspection equipment and other professional equipments.
Our comprehensive product portfolio and over 20 years of industry knowledge mean customers can rely on us to deliver innovative, reliable and economic products. Chenglei products are designed and manufactured with quality components and clear user interfaces for quick and safe operation in the field. Our strict product development and testing ensures long-lasting performance and continued reliability. Our independently developed and produced CL series valve electric actuators are widely used in various industries such as Oil & Gas, Water & Power, and Chemical, Process & Industrial .
Customers rely on us for innovative, high quality and dependable products for managing the flow of liquids, gases and powders. We help customers around the world to reduce emissions, improve efficiency, minimize their environmental impact and assure safety.