In the rapidly evolving field of new energy—whether for photovoltaic inverters, energy storage systems, EV charging piles, or industrial UPS systems—the demands for reliability, power density, and safety in core electrical components are higher than ever. The ME108 Series High-Power PCB Relay from Meishuo Electric is engineered to meet these rigorous application requirements.   Product Overview The ME108 is a dual-pole, high-power PCB-mounted relay in a compact 36mm × 30mm × 40mm footprint. It delivers robust load handling up to 35A @ 277VAC within a limited space. The main contacts use silver alloy for low contact resistance and excellent conductivity, making it suitable for frequent switching and high-current applications.   Two configurations are available: ME108-2A-F: Two normally open (NO) main contacts ME108-2A1b-F: Two NO main contacts + one normally closed (NC) auxiliary contact   The auxiliary contact can be used for status feedback, interlocking, or signal transmission, enhancing system monitoring and safety logic. Key Performance Advantages

• High Load & Long Life

Max. switching current: 40A (main), 1A (auxiliary) Max. switching voltage: 480VAC (main), 277VAC / 30VDC (auxiliary) Electrical life: ≥30,000 operations (35A 277VAC resistive load, 85℃) Mechanical life: Up to 1 million operations

• Superior Insulation & Safety

Insulation class: Class F Dielectric strength: Up to 2000VAC between main contacts, 5000VAC between main contact and coil Contact clearance: ≥3.6mm, effectively preventing arcing and breakdown Certified by UL, TÜV, and CQC, complying with international electrical safety standards

• Built for Harsh Environments

Operating temperature: -40℃ to +85℃ Vibration resistance: 10Hz–55Hz, 1.0mm double amplitude Shock resistance: Functional 98m/s², destructive 980m/s² Flux-proof construction, suitable for automated soldering processes Typical Applications The ME108 relay is ideal for: PV inverters – DC switching & AC output control EV charging stations (fixed type) – Main circuit control & safety disconnect UPS systems – Battery management & output switching Active Power Filters (APF) – Fast switching & system protection Energy Storage Systems (ESS) – Battery string management & load control   Electrical Specifications (Coil Side)

Rated Voltage (VDC)	Operate Voltage ≤ (VDC)	Release Voltage ≥ (VDC)	Coil Resistance (Ω)	Coil Power (W)
6	4.5	0.3	19.1	–
9	6.75	0.45	43.1	1.88
12	9	0.6	76.6	–
24	18	1.2	306.4	–

The coil supports a wide holding voltage range: 30%–110% of UN at 23℃, accommodating voltage fluctuations.   Installation & Wiring The ME108 features a standard THT (through-hole) design with clear PCB layout and mounting hole dimensions. It is compatible with automated assembly and soldering. Weighing approximately 66g, it offers stable performance in high-vibration environments. Note: Refer to pages 2–3 of the datasheet for detailed installation drawings and wiring diagrams.   Why Choose ME108? High power density – Compact size, high current rating Proven reliability – Long electrical life, robust insulation, wide temperature range Globally certified – UL, TÜV, CQC approvals for worldwide market access Flexible configuration – With or without auxiliary contacts to match your control logic   Get in Touch The ME108 relay has been deployed in new energy projects worldwide. For technical details, samples, or customized solutions, please contact us through our official website for professional support. Disclaimer: This document is for reference only. Specifications are subject to change without notice. Always select the appropriate model based on actual application conditions and ensure compliance with local electrical safety regulations.   Meishuo Electric – Powering efficient and reliable new energy systems with core control components.