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Home / News / Industry News / FH61NE New Energy Magnetic Latching Relay — Reliable Power Switching Solution for PV Inverters and AC Charging Stations
Content
- 1 40A High Current Switching Capability for New Energy Equipment Power Control
- 2 Auxiliary Contact Safety Monitoring Design for Enhanced System Safety
- 3 Low-Power Magnetic Latching Structure for Energy-Efficient Operation of New Energy Equipment
- 4 High Insulation Design and Reliable Performance for Complex Operating Environments
- 5 Multiple Coil Voltage Options for Flexible System Design
- 6 Compact Platform Design for Easier Product Upgrades
- 7 Safety Approvals
- 8 Typical Applications
- 9 Frequently asked questions
As photovoltaic power generation, energy storage systems, and electric vehicle charging facilities continue to advance toward higher power and greater efficiency, relays are expected to deliver not only reliable high-current switching capability but also safety monitoring, low power consumption, and long-term operational stability. To meet the application requirements of new energy equipment, Fanhar Electronics has introduced the FH61NE Series New Energy Magnetic Latching Relay. The product features a contact configuration of 2 sets of 40A main contacts + 1 set of auxiliary contacts. When the main contact sticks, the auxiliary contact provides a safety monitoring feedback signal, meeting the requirements of IEC 61810-3 for safety monitoring functions. The relay adopts a low-power magnetic latching design with a coil power consumption of only 1.88W. Combined with a Class F insulation system and a compact mechanical structure, it meets the comprehensive demands of new energy applications such as solar PV inverters, AC charging stations, and EV charging equipment for energy-efficient operation and long-term reliability. The FH61NE Series has obtained UL/cUL, TUV, and CQC safety certifications and is widely used in new energy power equipment applications.
40A High Current Switching Capability for New Energy Equipment Power Control
New energy equipment places high demands on relay current switching capability. The FH61NE features two sets of 40A main contacts, supporting high-current load control in new energy equipment. The main contacts use AgSnO₂ contact material, which provides excellent anti-welding and conductive properties to meet the contact reliability requirements of power switching applications in new energy equipment. Key specifications are as follows:
These electrical parameters enable the FH61NE to reliably perform circuit switching and control functions in PV inverters and AC charging stations.
Auxiliary Contact Safety Monitoring Design for Enhanced System Safety
New energy equipment has stringent requirements for operational safety. The FH61NE offers auxiliary contact options to meet safety monitoring needs. Available configurations include:
2A+1A: Two normally open main contacts + one normally open auxiliary contact
2A+1B: Two normally open main contacts + one normally closed auxiliary contact
When the main contact sticks, the auxiliary contact provides feedback signals for system status monitoring.
Low-Power Magnetic Latching Structure for Energy-Efficient Operation of New Energy Equipment
The FH61NE adopts a magnetic latching relay structure with the following advantages:
Coil power consumption: 1.88W
Sustaining voltage range: 40%~100% Un (ambient temperature 25℃); 50%~60% Un (ambient temperature 85℃)
Maximum sustaining voltage: Refer to the coil data table
The magnetic latching design significantly reduces continuous energy consumption during the relay holding state. Applying the coil sustaining voltage to the complete machine effectively saves power loss, making it more suitable for the energy-efficient operation requirements of new energy equipment.
High Insulation Design and Reliable Performance for Complex Operating Environments
The FH61NE features a high-insulation design and compact construction, balancing electrical safety and mechanical reliability:
Multiple Coil Voltage Options for Flexible System Design
Different control systems require different coil voltage configurations. To simplify system integration, the FH61NE Series is available with multiple DC coil voltage options, including 6VDC, 9VDC, 12VDC, 24VDC and 48VDC.
Each coil option is designed with a rated power consumption of 3.2W, allowing engineers to select the most suitable control voltage without changing the relay platform. The standardized coil design not only improves compatibility with various control circuits but also simplifies product development for manufacturers using multiple voltage platforms.
Compact Platform Design for Easier Product Upgrades
The FH61NE series offers a unified platform design across different contact configurations and coil voltage options, providing manufacturers with a flexible foundation for developing diverse new energy equipment applications.
All configurations share identical external dimensions of 37.2 × 30 × 40 mm, along with the same PCB layout, mounting footprint, insulation performance, and mechanical construction. The primary differentiator between configurations is the contact arrangement (2A, 2A+1A, or 2A+1B), allowing designers to select the appropriate monitoring function without altering the PCB design.
This common platform enables equipment manufacturers to easily incorporate auxiliary contact monitoring (for safety feedback when the main contact sticks) into their designs without changing the mechanical installation or board layout. As a result, development cycles can be shortened, engineering costs reduced, and product standardization improved.
For manufacturers seeking scalable solutions across solar inverters, AC charging stations, and EV charging equipment, the FH61NE Series provides an efficient and practical platform.
Safety Approvals
The FH61NE has obtained UL/cUL, TUV, and CQC safety certifications. The product also complies with EU RoHS/REACH environmental directives. Fanhar Electronics has achieved ISO9001, ISO14001, and ISO45001 international management system certifications, holds more than 40 national patents, and has been recognized as a National High-Tech Enterprise and a Provincial-Level R&D Center.
Typical Applications
The FH61NE is mainly used in the following new energy sectors:
In these applications, the relay primarily performs power switching control and status monitoring functions, providing stable and reliable current control solutions for the system.
Frequently asked questions
Q1: What type of relay is the FH61NE?
The FH61NE is a new energy magnetic latching relay developed by Zhejiang Fanhar Electronics Co., Ltd., mainly used in solar PV inverters and AC charging stations.
Q2:What is the maximum current rating of the FH61NE?
The FH61NE main contact rated load is 40A 277VAC (resistive load), with a maximum switching current of 40A.
Q3:Does the FH61NE support auxiliary contacts?
Yes. The FH61NE offers 2A+1A (normally open auxiliary contact) and 2A+1B (normally closed auxiliary contact) versions. When the main contact sticks, the auxiliary contact provides feedback signals for system status monitoring, meeting the IEC 61810-3 safety monitoring function requirements.
Q4: What is the operating temperature range of the FH61NE?
The operating temperature range is -40℃ ~ +85℃, making it suitable for various regions and complex industrial environments.
For applications requiring higher current capacity, FH66NE160 is the recommended choice. For systems designed around a 100A current rating, FH66NE100 provides the appropriate solution.
Q5: What are the mechanical and electrical life ratings of the FH61NE?
Mechanical life: 5×10⁶ operations
Electrical life (main contact): 1×10⁵ operations at 40A 277VAC resistive load (85℃)
Electrical life (auxiliary contact): 1×10⁵ operations at 1A 30VDC/277VAC resistive load (85℃)
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