MCCB 250A 2 Pole Molded Case Circuit Breaker 2p DC MCCB MCB Circuit Breakers

• Customization: Available
• Breaking Capacity: Low Voltage Circuit Breakers
• Operation: Manual Type
• Model NO.: KNM7DC-250/2300 2P
• Speed: High-Speed Circuit Breaker
• Arc-extinguishing Medium: Air
• Installation: Fixed
• Structure: MCCB
• Poles Number: 2
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Overcurrent Protection, OVP(Overvoltage Protection)
• Certification: ISO9001-2000, CE, CCC
• Model Number: Knm7DC-250/2300
• Material: Plastic
• Trip Unit Technology: Electronic
• Rated Current in(a): 125A
• Certificate: CE/ISO9001/CCC
• Pole: 2 Pole
• Color: Black
• Warranty: 1 Year
• Rated Voltage: 1000V
• Operating Short-Circuit Breaking Ability: 8ka
• Transport Package: Neutral Standard Packaging
• Specification: 39.5*29.5*28
• Trademark: Korlen
• Origin: Zhejiang, China
• HS Code: 8536200000
• Production Capacity: 15000000/Year
• Package Size: 39.50cm * 29.50cm * 28.00cm
• Package Gross Weight: 26.300kg

Product Description

MCCB 250A 2 Pole Molded Case Circuit Breaker 2P DC MCCB MCB Circuit Breakers

Product Description

KORLEN molded case circuit breaker features a high-strength thermosetting material housing, with a breaking capacity ranging from 10kA to 100kA and supports a rated current from 16A to 1600A.

The product is certified by IEC60947-2 and is equipped with an accurate thermal-magnetic tripping mechanism, providing dual protection against overload and short circuit. It is particularly suitable for photovoltaic systems and industrial power distribution scenarios. Its compact design saves 40% of installation space and has a wide operating temperature range of -25ºC to 70ºC.

Product Parameters

 

Poles	2	2	2
Rated Operational Voltage Ue(V)DC	250/500	500/1000	250/500/750/1000/1250/ 1500/1250/1500
Nominal Insulation Voltage Ui(V)	750	1250	1500
Rated Impulse Withstand Voltage Uimp(kV)	8	8	12
Rated Current In(A)	50/63/80/100/125	63/80/100/125/140/ 160/180/200/225/ 250/280/315/320	225/250/315/350/400
Rated Short Circuit Breaking Capacity Ics(kA)	Ics=100%Icu
Whether it has the isolation function	Yes
Applicable ambient temperature	-35ºC~+70ºC
Mechanical life	20000	20000	10000
Electrical life	5000/3000	3000/2000	1000/700
Up to standard	IEC/EN 60947-2,GB/T 14048.2
Size	150×64×95	180×76×126(2P) (L×W×H)	250×124×165(2P) (L×W×H)

 

1. Safety Performance

Overload Protection

Accurately detect the current, quickly cut off the circuit when exceeding the rated value, prevent the danger of overheating the wire, such as ensuring the safety of household electricity when multiple appliances are used at the same time.

 

Short Circuit Protection

The current increases sharply during short circuit, which can cut off the circuit in a very short time (a few milliseconds to tens of milliseconds) to protect the safety of electrical appliances and circuits.

Leakage Protection
Detect the small leakage current, reach the threshold (such as 30mA) immediately tripping, to ensure personal safety in humid environment.

2. Quality and Durability

High Quality Material
The contacts are made of high-quality conductive and wear-resistant materials (such as silver alloy), which can maintain good contact performance and prolong life for long-term opening and closing operation.

Flame-retardant Housing
The shell is flame retardant, high temperature resistant, impact resistant, protects the internal components from the environmental impact, and can also provide some protection in case of accidents.

Tight Quality Control Procedure
After a number of tests before delivery, including electrical and mechanical performance tests, to ensure normal operation under different working conditions.

3. Performance and Function

Accurate Current Rating
A variety of rated current (such as 6A-125A,160A,250A,400A, etc.) can be selected to adapt to different circuit load requirements to avoid improper protection.

High Responsiveness
Fast response to abnormal situations, reducing the impact of faults on circuits and equipment.

Easy Operation and Maintenance
The operation mechanism is simple and intuitive, the manual closing and opening is convenient, the structure is easy to maintain, and the replacement of vulnerable components is simple to operate.

4. Design and Installation

Compact Design
Small size, in the distribution box and other limited space can be installed efficiently, conducive to the installation of multiple circuit breakers to protect more circuits.

Standard Installation Port
Meet industry standards, easy to install on the distribution box rail, reduce installation time and cost.

Associated Products

 

 

Company Profile

 

Q1: Are you a trading company or a manufacturer?

We are Integration of industry and trade, our company has a history of 40 years. We have been specializing in the production of a series of photovoltaic electrical products, such as circuit breaker, pv combiner boxes, pv connector, surge protector, pv fuses, pv tool accessories and etc.

Q2: If OEM is acceptable?

We can provide OEM and ODM services. We have many different specifications and appearances for customers to choose.

Q3: Do you provide sample? Free or charge?

We can provide free samples to customers, but only one piece, but customers need to bear the freight. For some special products, we also offer free samples. Considering their particularity, we usually refund the sample fees to customers after they place formal orders.

Q4: How long is your delivery time?

Our delivery time is determined according to the purchase quantity. Generally, it is about 3-40 days, less than 300 pieces within 5 days, 300-2000 pieces within 7-15 days, 2000-20000 only within 15-40 days.

Q5: What are the current and voltage ratings?

The rated current and voltage of Korlen photovoltaic connectors vary according to the specific model. The rated current of the standard type is 20A-50A  (some models can reach 60A), and the rated voltage meets the 1000V-1500V photovoltaic DC voltage range, which is suitable for different photovoltaic power stations.

Q6: How to ensure low contact resistance?

Korlen photovoltaic connector contact is made of high quality copper and silver plated, good electrical conductivity and low resistivity; The manufacturing process strictly controls the processing accuracy of the contact, and professional equipment is used for assembly to ensure tight contact and reduce contact resistance.

Q7: Does it have a leakage protection function?

Yes, Korlen PV connectors is leak-proof. The insulation part is made of high-performance engineering plastics with high insulation resistance; The structure is well sealed to prevent water vapor and dust from entering; There is strict leakage detection in production.

Q8: How is the firmness of the connection guaranteed?

Korlen PV connectors feature a reliable locking design (e.g. double locking); In terms of materials, the shell and connecting parts are made of high-strength, wear-resistant materials; Strict fastness testing in production.

Q9: How to ensure the reliability of the product?

Korlen PV connectors select high-quality suppliers in the procurement of raw materials, the production follows a strict quality management system, each process testing, as well as a variety of reliability tests, and has perfect after-sales service.