How does the under-voltage tripper work?

It trips the circuit breaker when the terminal voltage drops below a specified range (35%-70% of Ue) to protect equipment.

What is the delivery time for this product?

During off-season, delivery is completed within 15 workdays, while peak seasons may take 1-3 months.

Is the shunt trip voltage independent of the main circuit?

Yes, the shunt trip unit operates with an independent voltage source separate from the main circuit voltage.

Shunt Trip and Auxiliary Contact of Circuit Breaker Accessory Suppliers

Name: Shunt Trip and Auxiliary Contact of Circuit Breaker Accessory Suppliers
Brand: Wenzhou Santuo Electrical Co., Ltd.
SKU: 1917822825

Zhejiang, ChinaWenzhou Santuo Electrical Co., Ltd.

US$0.75

10,000 Pieces

Sample price:US$100.00/bag.Request sample

Product profile

Customization

Available

Breaking Capacity

Low Voltage Circuit Breakers

Operation

Manual Type

Model NO.

STMX

Speed

Normal Type Circuit Breaker

Arc-extinguishing Medium

Vacuum

Installation

Fixed

Structure

MCB

Poles Number

Type

Circuit Breaker

Function

Overcurrent Protection, OVP(Overvoltage Protection)

Certification

Delivery Time

Within 15days

Rated Voltage

AC 400,380V, 220V, 127V; DC 48V, 36V, 24V

Moving Voltage

(70%-110%) X Ue

Standards

IEC60947-3, GB14048.3

Transport Package

Exporting Carton

Specification

120pcs/ctns

Trademark

SONTUOEC, STUOEC, WZSTEC

Origin

Wenzhou Zhejiang, China

HS Code

8536909000

Production Capacity

5000pieces/Week

Key features

Multi-Function Integration: Combines shunt trip, auxiliary contact, and under-voltage tripper capabilities in one unit.

Remote Control Capability: Enables remote tripping via fire alarm systems or emergency stop buttons.

Wide Voltage Compatibility: Supports AC 400V, 380V, 220V, 127V and DC 48V, 36V, 24V rated voltages.

Standard Compliance: Meets IEC60947-3 and GB14048.3 international and national safety standards.

Flexible Installation: Designed for fixed installation on the left or right side of MCB/MCCB series.

Circuit Status Indication: Provides clear ON/OFF status indication linked to the main circuit mechanism.

Fast Delivery: Off-season lead time within 15 workdays for quick order fulfillment.

Overcurrent & Overvoltage Protection: Delivers essential protection functions for electrical equipment safety.

Company profile

Wenzhou Santuo Electrical Co., Ltd.

Zhejiang, China

Business Type: Manufacturer/FactoryExport Year: 2016-01-08Nearest Port: NINGBOAverage Response Time: ≤1.53hTerms 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.