Stm1-63 4p MCB Circuit Breaker High Breaking Capacity Overload Protection

Name: Stm1-63 4p MCB Circuit Breaker High Breaking Capacity Overload Protection
Brand: Wenzhou Santuo Electrical Co., Ltd.
SKU: 851257205

Zhejiang, ChinaWenzhou Santuo Electrical Co., Ltd.

US$2.20

1,000-4,999 Pieces

US$2.12

5,000+ Pieces

Sample price:US$100.00/bag.Request sample

Product profile

Customization

Available

Breaking Capacity

Low Voltage Circuit Breakers

Operation

Electric Type

Model NO.

STM1-63

Speed

Normal Type Circuit Breaker

Arc-extinguishing Medium

Air

Installation

Fixed

Structure

MCB

Poles Number

Type

Circuit Breaker

Function

Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection), RCCB

Certification

Standard

IEC 60898

Ue

230/400V

in

1, 2, 4, 6, 10, 16, 20, 25, 32, 40, 50, 63A

Pole

1p2p3p4p

Transport Package

Exporting Carton

Specification

40 pcs/ctns

Trademark

SONTUOEC, STUOEC, WZSTEC

Origin

Wenzhou Zhejiang

HS Code

8536200000

Production Capacity

2000pieces/Week

Key features

High Breaking Capacity: Rated breaking capacity up to 6,000A for reliable short-circuit protection.

IEC 60898 Compliance: Conforms to IEC 60898 standard for safety and performance assurance.

Multiple Trip Curves: Offers B, C, and D curves to suit resistive, inductive, and high inrush loads.

Wide Current Range: Available in rated currents from 1A to 63A for diverse applications.

DIN Rail Mounting: Easy installation on standard 35mm DIN rail using fast clip device.

Long Mechanical Life: Mechanical endurance over 10,000 cycles for durable operation.

CE Certification: Certified by CE for meeting European safety and quality standards.

Versatile Pole Options: Available in 1P, 2P, 3P, and 4P configurations for various voltage systems.

Company profile

Wenzhou Santuo Electrical Co., Ltd.

Zhejiang, China

Business Type: Manufacturer/FactoryExport Year: 2016-01-08Nearest Port: NINGBOAverage Response Time: ≤2.23hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, EXW, CFR, CIF

AI-Powered supplier vetting

SummaryThe supplier demonstrates broad customization, OEM/ODM service capability, in-stock capacity, and substantial stated production volumes for contactors and circuit breakers. It exports 90% of total sales, has self-operated import/export rights, serves multiple global regions, and has attended the Canton Fair. ISO9001:2015 and CE certification are reported. However, innovation evidence is limited because no new products were reported in the past year and no SDK is available. Quality and service procedures exist but lack written records, while overseas agents, branches, warehouses, and showrooms are absent. Peak-season fulfillment information is inconsistent: one slice states 2–3 months, while others state within 15 workdays or one month. Financial data is represented only by years, so credibility cannot be determined.

Supplier typeThe supplier is an export-oriented manufacturer with self-operated import/export rights, OEM and ODM capabilities, in-stock capacity, and stated production of 500,000 contactors and 1,500,000 circuit breakers. It serves multiple overseas regions but has no overseas agents, branches, warehouse, or showroom.

CertificationsThe supplier reports an ISO9001:2015 management-system certificate and CE product compliance certification. These are explicit certification holdings, although no additional certification details or validity documentation are provided.

R&D capabilityThe supplier offers ODM services and multiple design customization modes, but reports no new products during the past year and no available SDK. This indicates design-service capability without sufficient evidence of recent product innovation.

Production capacityThe supplier reports annual output of 500,000 contactors and 1,500,000 circuit breakers, maintains inventory capability, and states off-peak lead times within 15 workdays in some records. However, peak-season timing is inconsistent, with records ranging from within 15 workdays or one month to 2–3 months.

Customization capabilityThe supplier explicitly supports customization from samples, designs, full customization, minor customization, and flexible customization, and also provides OEM and ODM services, including OEM for well-known brands. This is strong direct evidence of broad customization capability.

Product Q&A

Q:What's the difference between type C and type D miniature circuit breaker?

Type C is mainly used for power distribution control and lighting protection. Type D is mainly used for motor protection.

Q:How to calculate the ampere number formula?

It is known that the power divided by voltage is equal to the ampere (W/N=A).

Q:What is the difference between unipolar, bipolar and tripolar?

Single pole (1P) 220V cuts off live wire, bipolar (2P) 220V cuts off live wire and zero line, three levels (3P) 380V three-phase power all cut off.

Q:What is the meaning of the circuit breaker (C6, C10, C25, C32, C63, etc.)?

Air switch C is the classification of circuit breakers, and the number represents the ampere rating of the circuit breaker.

Q:How to select the right circuit breaker?

When choosing a circuit breaker, select one with a current rating smaller than the wire's bearing current. If BV2.5 square wire bears 26A, select a breaker below 25A.