How is the MCB installed?

It is designed for fixed installation on a 35mm DIN rail using a fast clip device.

What is the rated breaking capacity?

The rated breaking capacity is available in 3500A, 4500A, and 6000A options.

Stm5-63 MCB 16A 230V 400V for Protecting Cables and Equipments

Name: Stm5-63 MCB 16A 230V 400V for Protecting Cables and Equipments
Brand: Wenzhou Santuo Electrical Co., Ltd.
SKU: 2022309195

Zhejiang, ChinaWenzhou Santuo Electrical Co., Ltd.

US$0.58

1,000-4,999 Pieces

US$0.57

5,000+ Pieces

Sample price:US$100.00/piece.Request sample

Product profile

Customization

Available

Breaking Capacity

Low Voltage Circuit Breakers

Operation

Manual Type

Model NO.

STM5-63

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 60898.1

Ue

230/400V

in

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

Pole

1p2p3p4p

Price

Factory Price

Transport Package

Exporting Carton

Specification

240pcs/ctns

Trademark

SONTUOEC, WZSTEC, SONTUNE

Origin

Wenzhou Zhejiang

HS Code

8536200000

Production Capacity

2000pieces/Week

Key features

High Current Limiting Performance: Limits destruction energy from short circuits to the greatest extent.

Wide Current Range Options: Available in 1A, 2A, 4A, 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A.

Multiple Pole Configurations: Offers 1, 2, 3, and 4-pole options for various circuit needs.

IEC 60898.1 Compliance: Conforms to international standard IEC60898.1 for safety and quality.

Long Mechanical Life: Rated for 10,000 mechanical operations for durability.

Versatile Curve Characteristics: Features B, C, and D curves for different load protection needs.

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

Competitive Factory Pricing: Direct factory price ensures cost-effectiveness for buyers.

Company profile

Wenzhou Santuo Electrical Co., Ltd.

Zhejiang, China

Business Type: Manufacturer/FactoryExport Year: 2016-01-08Nearest Port: NINGBOAverage Response Time: ≤1.84hTerms 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 is the rated current range for this MCB?

The rated current ranges from 1A to 63A, including 1, 2, 4, 6, 10, 16, 20, 25, 32, 40, 50, and 63A.

Q:What are the available pole numbers?

This MCB is available in 1, 2, 3, and 4-pole configurations.

Q:Does this product meet international standards?

Yes, it conforms to the IEC60898.1 standard.

Q:What are the B, C, and D curve characteristics used for?

B curve protects against short circuits in TN/IT systems; C curve handles overloads and short circuits for resistive/inductive loads; D curve is for high inrush current loads like transformers.

Q:What is the mechanical life of the circuit breaker?

The mechanical life is rated for 10,000 operations.