Electronic Trip Unit Molded Case Circuit Breaker for Precise Fault Detection

Product Description

Product Description

MCCB

The Molded Case Circuit Breaker (MCCB) is a low-voltage power protection device designed to provide reliable protection and control for electrical distribution systems. It effectively protects circuits and equipment against overload, short-circuit, and other abnormal operating conditions, ensuring system safety and continuity.

The MCCB is available with thermal-magnetic or electronic trip units, offering accurate and stable tripping performance. Adjustable protection settings, including rated current and time delay, allow flexible coordination with upstream and downstream protection devices, improving selectivity and overall system reliability. This makes the MCCB suitable for a wide range of applications with different load requirements.

Featuring a compact molded insulation housing, the MCCB provides excellent dielectric strength, mechanical durability, and resistance to heat and environmental stress. It supports 3-pole and 4-pole configurations and covers a broad current range, making it suitable for both standard and demanding power distribution applications. A full range of accessories—such as auxiliary contacts, shunt release, under-voltage release, and motor operating mechanisms—can be integrated to meet various control and automation needs.

MCCBs are widely used as incoming or feeder circuit breakers in distribution panels, switchboards, motor control centers, and industrial power systems. Typical applications include commercial buildings, industrial plants, infrastructure projects, and energy facilities.

Manufactured in accordance with IEC 60947-2 standards, the MCCB offers high breaking capacity, long electrical and mechanical life, consistent performance, and dependable quality, providing a cost-effective solution for modern low-voltage power distribution systems.

Arc-Extinguishing Medium	Air
Structure	MCCB (Molded Case Circuit Breaker)
Type	Circuit Breaker
Certification	ISO9001-2000, CE, CB, TUV
Transport Package	Export Package
Trademark	Q&S
Speed	Normal Type Circuit Breaker
Installation	Fixed
Poles Number	3
Function	Conventional Circuit Breaker, Circuit Breaker Failure Protection, Overcurrent Protection, OVP (Overvoltage Protection), RCCB
Specification / Standards	CE, CB, ISO9001, ISO14001
Origin	China

Main product

Company Profile

Corporate advantage

Certifications

EXHIBITION AND CUSTOMER VISIT

Our services

Packaging & Shipping

FAQ

1. Are you a manufacturer or a trading company?
We are a professional manufacturer specializing in high and low voltage electrical products, including MCB, MCCB, ACB, VCB, RCCB and related accessories. All products are produced in our own factories under strict quality control.

2. What international standards do your products comply with?
Our products are designed and tested in accordance with IEC international standards and carry relevant international certifications such as CE, CB, and TÜV, depending on product type and customer requirements.

3. What is your Minimum Order Quantity (MOQ)?
Our standard MOQ is flexible and depends on the product model and packaging requirements. Small trial orders are welcome to support new customers during initial cooperation.

4. Can you provide samples?
Yes, free samples are available for most models. Customers only need to cover the shipping cost.

5. What is your delivery time?
Normally, production lead time is 15–30 days after order confirmation and deposit receipt. Delivery time may vary depending on order quantity and product specifications.

6. How do you ensure product quality?
All products undergo strict inspection from raw materials to final testing. We implement full-process quality control, including routine electrical performance testing and mechanical endurance verification.

7. Do you offer OEM or private labeling services?
Yes, we provide OEM customization, including brand logo, packaging, and product labeling according to customer requirements.

8. What payment terms do you accept?

Standard terms are T/T, with deposit before production and balance before shipment. Other terms can be discussed depending on cooperation scale.Our products are exported to many markets worldwide, including Europe, South America, the Middle East, Southeast Asia, and Africa.