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Precision Electric Meter Accessories

Haiyan Formeters Electronics Co., Ltd. manufactures high-quality shunts, transformers, relays, and terminals for global energy metering solutions.

Electric Meter Probes

Who We Are

A trusted manufacturer of electric meter accessories with over 15 years of industry experience and innovation.

About Our Company

Haiyan Formeters Electronics Co., Ltd. mainly produces electric meter accessories such as shunts, transformers, relays, and copper hardware. Our factory is located in Haiyan, Zhejiang, China, with over 120 employees and more than 10 technical and R&D personnel.

We operate nearly 50 sets of efficient and advanced production equipment, ensuring stable technology, strict quality control, and orderly production management. Our mission is to provide reliable, high-performance components that meet international standards.

We welcome friends from all walks of life to visit, guide, and negotiate business. Partner with us for consistent quality and responsive service.

120+ Employees

Skilled workforce ensuring precision manufacturing

10+ R&D Engineers

Dedicated to innovation and product improvement

50+ Machines

Advanced production equipment for consistency

Global Reach

Serving clients across Asia, Europe, and Americas

Our Products

High-quality electric meter accessories engineered for reliability and precision.

WiFi Optical Probe

WiFi Optical Probe

High-sensitivity optical communication module for smart meters with wireless connectivity.

  • • Compatible with IEC 62056-21
  • • 2.4GHz WiFi support
  • • Low power consumption
High Current Shunt

High Current Shunt

Precision shunt resistor for ammeter applications requiring accurate current measurement.

  • • 50A to 3000A range
  • • 75mV output standard
  • • Manganin alloy construction
Current Transformer

Current Transformer (CT)

Used to step down high AC currents to measurable levels for metering and protection.

  • • 5A or 1A secondary output
  • • 100/5, 200/5, 400/5 ratios
  • • High accuracy class 0.5/1.0
Latching Relay

Latching Relay

Energy-saving relay that maintains state without continuous power supply.

  • • Pulse-triggered operation
  • • Low power consumption
  • • Long mechanical life >100k cycles
Terminal Block

Terminal Block

Secure connection points for wiring in energy meters and electrical panels.

  • • Flame retardant PC material
  • • Screw or spring clamp options
  • • 630V max voltage rating
Meter Components

Meter Components

Custom copper hardware and internal parts for single and three-phase meters.

  • • CNC machined precision parts
  • • Tin-plated copper terminals
  • • RoHS compliant materials

Power Relays

High-reliability relays for switching load circuits in energy management systems.

  • • 10A to 40A contact rating
  • • 250VAC switching capacity
  • • UL & CE certified

Custom Solutions

OEM/ODM services for specialized meter accessories and components.

  • • Prototype to mass production
  • • Design & testing support
  • • MOQ as low as 500 pcs

Why Choose Formeters?

We deliver quality, reliability, and partnership-driven service.

Quality Control

Strict inspection at every stage from raw material to final shipment.

In-House Production

Full control over manufacturing ensures consistency and fast turnaround.

Global Shipping

Reliable logistics partners for timely delivery to over 30 countries.

Dedicated Support

Responsive technical and sales team available for your inquiries.

15+
Years in Business
120+
Employees
50+
Machines
30+
Countries Served

Latest News

Insights and technical knowledge from our engineering team.

Technical Insight

What is a Latching Relay?

A latching relay maintains its ON or OFF state after a pulse voltage is applied. It does not require continuous power, making it ideal for energy-saving applications in smart meters.

Published: January 26, 2021
Technical Insight

Understanding Current Transformers

A current transformer (CT) scales down high AC currents to a proportional lower current for safe measurement. It's essential in power monitoring and protection systems.

Published: January 26, 2021
Technical Insight

What is a Shunt in an Ammeter?

An ammeter shunt is a low-resistance precision resistor placed in parallel to measure high currents. The voltage drop across the shunt is measured to calculate current.

Published: January 26, 2021

Get in Touch

Contact us for product inquiries, samples, or partnership opportunities.

Contact Information

Phone

+86 188 5739 7300 (Alio Yin)

Email

alio@formeters.com

Address

No.12 Chengxi Rd, Haiyan, 314300 Zhejiang, China

Send Us a Message

For product inquiries, technical support, or partnership discussions, please visit our official website to contact us directly.

Go to Contact Page

We respond to all inquiries within 24 business hours.

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