125A MCB Miniature Circuit Breaker with Overload & Short Circuit Protection

Product Description

Intro

Technical Features

The DKLINE DZ47-125H  MCB is a heavy-duty, high-capacity industrial-grade Miniature Circuit Breaker built to deliver dependable overcurrent and short-circuit protection for low-voltage power distribution systems.
 
Boasting a compact, lightweight structure with refined appearance, this MCB features excellent performance, high breaking capacity and instant tripping response.
The housing and internal components are manufactured using premium flame-retardant, impact-resistant engineering plastic, offering outstanding durability and stable operation under harsh working environments.
 
Unlike regular household MCBs which are normally limited to 63A rated current and 6kA breaking capacity, the DZ47-125H series supports higher current ratings up to 125A, perfectly suited for heavy-load home main feeds, commercial distribution boards and rigorous industrial sub-circuit applications.
 
It protects AC 50Hz circuits: 230V for 1P models and 400V for 2P/3P/4P variants against overload and short-circuit faults. Beyond circuit protection, it can also be used for infrequent switching of electrical equipment and lighting circuits. Acting as a fully resettable, reliable replacement for conventional high-current cartridge fuses, it greatly simplifies maintenance work.
The DIN rail mounting design enables quick and easy installation inside distribution cabinets. Choose DKLINE DZ47-125H for secure, long-lasting circuit protection for your high-load electrical projects.

High 125A Current Rating: Built for heavy-duty loads, beyond standard 6A63A MCB range.

Up to 10kA Breaking Capacity: Reliably interrupt fault currents to safeguard downstream circuits. 

2-Pole, 230/400V AC 50Hz: Simultaneous 2-pole disconnection for AC power networks. 

B/C/D Tripping Curves: Adapt to lighting, socket and motor startup loads. 
Robust Terminals: Accept cables up to 25mm²; 5N·m torque for stable low-resistance connections. 
35mm DIN-Rail Snap-in Installation: Fast mounting in standard distribution boxes. 
Certified Quality: Meets IEC60947-2 and CE for global markets.

Technical Data Rated Current	6A,10A,16A,20A,25A,32A,40A,50A,63A,80A,100A,125A
Rated Voltage	230/400VAC(240/415)
Rated Frequency	50/60Hz
Number of Pole	1P,2P,3P,4P(1P+N,3P+N)
Module size	18mm per pole(6-63A); 27mm per pole(80-125A)
Curve type	B,C,D
Type Breakering capacity	6000A(6-63A); 10000A(80-125A)
Optimumoperating temperature	-5°C to 40°C
Terminal Tightening torque	5N-m(6-63A); 3.5N-m(80-125A)
Terminal Capacity(top)	25mm2(6-63A); 35mm2(80-125A)
Terminal Capacity(bottom)	25mm2(6-63A); 35mm2(80-125A)
Electro-mechanical endurance	4000 cycles (6-63A); 8000 cycles(80-125A)
Mounting	35mm Din-rail
DinRail Suitable Busbar	PiN Busbar

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Company Profile

About us

Baoding Sihedan Electric Technology Co., Ltd. is a professional manufacturer of power systems and transmission and distribution line materials, providing diverse solutions for the global energy sector.

Our product includes Power Systems, such as Reclosers, Air Break Switches, Load Break Switches, SF6 and Vacuum Circuit Breakers, and Current Transformers (CTs) and Voltage Transformers (VTs); Insulators & Surge Protection, including Insulators, Surge Arresters, and Drop-out Fuses; Electric Power Fittings, such as Overhead Line Fittings, Stay Materials, Steel Structures, and Earthing Materials; and Enclosures & Switchgears, including Enclosures and Switchgears, offering a complete range of solutions for transmission, distribution, and industrial power applications.

 

To support our product quality, we provide warranty letters and test reports for all products. Additionally, we offer virtual maintenance services, ensuring timely support and expert guidance for our clients, wherever they are.We have successfully contributed to major domestic and international power projects, earning long-term trust from the State Grid Corporation of China and China Southern Power Grid Company, among other leading organizations.

Main products

Packing & Delivery

FAQ

Q1: Are you a factory or a trading company?
A: We are a professional manufacturer with our own production workshop and complete testing equipment.

Q2:Can you provide samples? Are the samples free?
A: Samples are available, but not free of charge; the sample fee and freight cost shall be borne by the buyer.

Q3:How long is the warranty period of the products?
A: We provide a 1-5 year warranty against manufacturing defects, starting from the date of shipment.

Q4:EPC material design and bulk supply?

A:Yes, we have a strong design team and have been supplying LV and MV EPC materials in bulk for many years.

Q5:Complete documents for tender?

A:Yes, a complete set of documents is ready for submission.

Q6: Can you do OEM with our brand?
A: Yes, we accept OEM customization with your logo, brand, and packaging.

Q7:What kind of packaging do you use for the products?
A: Standard export pallets with waterproof and moisture-proof treatment, suitable for long-distance ocean transportation.

 

Q8: What payment methods do you accept?

A:  1. 30% T/T in advance, 70% T/T against copy of B/L(Bill of Lading)

      2. 30% T/T in advance, 70% by L/C                                                                             

 

Q9: What shipping options do you provide, and what are the typical lead times for delivery? 

A:Sea Freight, and the lead times is about 15-30 days.