China MCCB Supplier in Yueqing
NY Circuit supplies NY brand molded case circuit breakers and related circuit-protection products from Yueqing. Browse STM series with thermal-magnetic and electronic trip-unit options; exact ratings, documents and OEM/ODM feasibility are reviewed for the requested model and project.
MCCB & Circuit Protection Series Overview
One product range covering standard distribution, leakage protection, metering, IoT and new-energy DC applications.
STM6RT Series
STM6RT thermal-magnetic MCCB with dual-adjustable thermal (0.8–1.0 In) and magnetic (5–10 In) settings — listed frames from 125A to 1250A.
View seriesSTM6 Series
STM6 thermal-magnetic MCCB for distribution and motor protection, covering 10A to 2000A across 125A to 2000A frames with C, S, M and H breaking-capacity options.
View seriesSTM6LY Series
STM6LY adjustable residual-current MCCB combining overload, short-circuit and earth-leakage protection across 125A to 1250A frames, with 2P, 3P and 4P options.
View seriesSTM6LE Series
STM6LE-250 electronic residual-current MCCB for AC400V distribution: 50A to 1250A, 4P, remote control, prepayment and bilingual display functions.
View seriesSTM7LE Series
STM7LE-250 electronic residual-current MCCB for AC400V networks, covering 50A to 800A in 4P configurations with communication, metering and prepayment functions.
View seriesSTM6EY Series
STM6EY electronic MCCB with LCD monitoring for AC400V distribution, adjustable 32A to 1250A settings, 3P/4P options and Icw up to 20kA for one second.
View seriesSTM6ZY Series
STM6ZY-250M IoT smart MCCB for AC400V networks: adjustable 50A to 1000A ratings, 3P/4P, four-stage protection, metering and communication interfaces.
View seriesSTM7 Series
STM7 high-voltage new-energy MCCB for AC380V to AC1140V systems, covering 16A to 1250A across 320A, 630A and 1250A frames with 3P construction.
View seriesSTM7DC Series
STM7DC new-energy DC circuit breaker for DC750V to DC1500V solar, battery-storage and DC distribution systems, covering 100A to 1600A with 2P, 3P and 4P options.
View seriesSTM7E Series
STM7E-125 intelligent changeover switch for correcting three-phase unbalance in AC400V/AC220V networks, with 125A to 250A model ratings and 8–10ms switching.
View seriesECB / DC6 Series
ECB prepayment MCCB for AC230V/AC400V utility distribution, covering 16A to 1600A with cost control, remote operation and 3P construction.
View seriesWhy Source MCCBs From NY Circuit
Yueqing-Based Coordination
Local support for model selection, samples, quotations and supply-side technical questions.
Documentation by Model
Available specifications and compliance files are matched to the model and destination requirement.
OEM / Private Label Review
Branding and packaging options may be available, depending on the model, quantity and project review.
Model Range
20 NY brand circuit-protection entries are listed from the current product data. Open a model to review its recorded specifications.
STM6RT Dual-Adjustable MCCB
STM6RTSTM6 Thermal-Magnetic MCCB
STM6STM6E Electronic MCCB
STM6STMRT-1250 Dual-Adjustable MCCB
STM6STM6LY Residual Current MCCB
STM6LSTM6LY-250M R Adjustable Residual Current MCCB
STM6LSTM6LE-250 Residual Current Protection MCCB
STM6LSTM6LE-160 GZ IoT Auto-Reclosing MCCB
STM6LSTM7LE-250 Residual Current Protection MCCB
STM6LSTM6EY Electronic LCD MCCB
STM6ESTM6ELY-250 Electronic Residual LCD MCCB
STM6ESTM6EY-250MP3 JLY Smart Four-Remote MCCB
STM6ESTM6ZY-250M IoT Smart MCCB
STM6ZSTM6ZY-400MP IoT Circuit Breaker
STM6ZSTM7-320 High-Voltage New Energy MCCB
STM7STM7DC-630 New Energy DC Circuit Breaker
STM7STM7E-125 Three-Phase Unbalance Changeover Switch
STM7ESTM7E-250 ZB Multi-Function Changeover Switch
STM7EECB-250 Prepayment MCCB
SpecialtyDC6 Series Remote IoT Operation Module
SpecialtyFrequently Asked Questions
Where is NY Circuit based?
NY Circuit is a supplier based in Yueqing, Wenzhou, Zhejiang, within China’s low-voltage electrical industry cluster.
What is the MOQ for NY products?
MOQ follows the model, frame size and configuration. Send a model list and quantity and we will set the number in the quotation.
Do you offer OEM / private labeling?
OEM and private-label options may be available subject to the selected model, quantity and project review.
Can you support buyers in the Middle East and Europe?
We accept inquiries from these markets and confirm logistics, labeling and available model-specific documents before order.