What are the overvoltage and undervoltage settings?

Overvoltage range is 231V-330V (factory 275V); Undervoltage range is 88V-209V (factory 145V). Users can set or disable these.

Is the device suitable for three-phase four-wire systems?

Yes, it is suitable for three-phase four-wire neutral point direct grounding (TT) distribution networks.

What certifications does the product have?

It holds CE, CB, CCC, and ISO9001-2000 certifications and meets IEC60947-2 standards.

125A 250A 400A 630A 800A Smart Re-Closing Circuit Breaker with Multiple Protection

Name: 125A 250A 400A 630A 800A Smart Re-Closing Circuit Breaker with Multiple Protection
Brand: Yueqing Long Road Electric Co., Ltd.
SKU: 2287295045

Zhejiang, ChinaYueqing Long Road Electric Co., Ltd.

US$72.00

3-99 Pieces

US$70.00

100-499 Pieces

US$68.00

500+ Pieces

Sample price:US$100.00/piece.Request sample

Product profile

Customization

Available

Breaking Capacity

Low Voltage Circuit Breakers

Operation

Electric Type

Model NO.

SMCCB

Speed

High-Speed Circuit Breaker

Arc-extinguishing Medium

Air

Installation

Fixed

Structure

MCCB

Poles Number

Type

Circuit Breaker

Function

Conventional Circuit Breaker, Overcurrent Protection, OVP(Overvoltage Protection), RCCB, Undervoltage Protection

Certification

ISO9001-2000, CE, CB, CCC

Model

Srm1e

Number of Poles

Current Value

250A

Rated Current in

80, 100, 125,150, 250A

Transport Package

4 PCS/Carton

Specification

IEC60947-2

Trademark

LONGROAD/OEM

Origin

China

Production Capacity

30, 000 Units/Month

Key features

Multi-Function Protection: Provides overload, short circuit, overvoltage, undervoltage, phase loss, and residual current protection.

Auto Re-Closing Feature: Automatically recloses after 20-60s when residual current fault is eliminated within 5s.

Real-Time Monitoring: LCD display shows residual current, voltage, and load current with 32-bit ARM microprocessor.

Online Parameter Setting: Protection functions and parameters can be set and modified online without power interruption.

High Breaking Capacity: Ensures reliable short circuit protection with breaking capacity up to 85kA.

Communication Capability: Supports remote telemetry, control, and adjustment via infrared or network communication.

Wide Current Range: Available in 125A, 250A, 400A, and 630A rated currents for various applications.

Certified Safety: Meets IEC60947-2 standards with CE, CB, CCC, and ISO9001-2000 certifications.

Company profile

Yueqing Long Road Electric Co., Ltd.

Zhejiang, China

Business Type: Manufacturer/FactoryExport Year: 2010-03-06 CertifiedNearest Port: Ningbo Port, Shanghai PortAverage Response Time: ≤2.21h CertifiedTerms of Payment: LC, T/T, D/P, etc. CertifiedInternational Commercial Terms(Incoterms): FOB, CIF, CFR

AI-Powered supplier vetting

SummaryYueqing Long Road Electric Co., Ltd. is a China-based limited trading company established in 2014 according to its business profile, while its company description states it was founded in 2010. It supplies low-voltage electrical products, including MCBs, RCCBs, SPDs, MCCBs, contactors, relays, isolators, and photovoltaic combiner boxes. The supplier reports ISO9001:2015 certification, multiple product certifications, eight production lines, MCB output of 20 million pieces, and one-month lead times in both peak and off-peak seasons. It claims exports to more than 80 countries and regions, although the detailed export-market information is limited to Africa, Southeast Asia, and the Middle East. Evidence supports broad product coverage, documented quality systems, and claimed innovation capabilities. However, after-sales resources, customization capability, financial credibility, and customer performance are insufficiently verified. The profile also contains inconsistencies regarding founding year, supplier...

CertificationsThe supplier explicitly reports an ISO9001:2015 management-system certificate. It also claims product certifications including CE, CB, IEC, SGS, Nemko, SAA, SASO, TUV, CCC, Golden Sun, and VDE, but the provided slices do not include certificate numbers, validity dates, or verification documents.

R&D capabilityThe supplier claims strong independent innovation capabilities, core technologies, multiple patents, and leading-level Internet of Things circuit breakers and photovoltaic and communications DC power-distribution products. These statements provide explicit positive evidence, although patent details and independent technical validation are not included.

Production capacityThe profile reports eight production lines, an MCB output of 20 million pieces, a 300.0 m² manufacturing plant, and one-month order fulfillment in both peak and off-peak seasons. These figures support established production capacity, although the relationship between the reported plant area, production lines, and the supplier's trading-company classification is not clarified.

Client casesThe supplier claims sales to countries and regions including the UK, Spain, Portugal, Singapore, Turkey, Russia, Korea, South Africa, and Nigeria, and separately claims coverage of more than 80 countries and regions. A detailed trade record identifies BTCPOWER CEBU INC as an associated buyer with one recorded transaction, providing some customer evidence but not enough to demonstrate a broad, verified customer portfolio.

Product Q&A

Q:What protection functions does this circuit breaker offer?

It offers overload, short circuit, overvoltage, undervoltage, phase loss, and residual current protection.

Q:How does the automatic re-closing feature work?

If residual current exceeds the limit, it recloses after 20-60s. If the fault clears within 5s, it stays closed; otherwise, it locks and requires manual reset.

Q:Can the protection parameters be adjusted online?

Yes, protection functions and parameters can be set and modified online using the LCD interface.

Q:What is the maximum rated current available?

The product is available in 125A, 250A, 400A, and 630A rated currents.

Q:Does it support remote communication?

Yes, it supports remote telemetry, control, and adjustment via infrared or network communication.