Electrical power supply connector

circularbayonetM40

Product Overview
The M40 4‑Pin waterproof connector is a bayonet‑lock electrical connector rated for 120A and 600V, designed specifically for EV charging, energy storage systems and battery pack connections. It provides IP67 sealing and UL94‑V0 flame retardancy for outdoor and industrial environments.

Key Features

• 120A Current Rating — 6.0 mm silver‑plated copper pins for high‑current power transmission.
• Bayonet Lock Mechanism — Quarter‑turn bayonet lock for quick mating and anti‑vibration retention.
• IP67 Protection — Fully sealed against dust and temporary immersion.
• EV Charging Compatible — Suitable for charging stations, energy storage and battery interconnects.
• Wide Temperature Range — Operates from -40℃ to 105℃ for harsh environments.
• Flame Retardant Housing — UL94‑V0 rated materials.
• Global Certifications — ISO9001, CE, UL, RoHS (TÜV available).

Product Specifications

• Model: M40 series (4‑Pin)
• Pin diameter: 6.0 mm
• Current rating: 120A
• Voltage rating: 600V
• Withstanding voltage: 3000V
• Cable gauge: 4 mm²–16 mm² (10–5 AWG)
• Diameter range: MAX Φ25.0 mm
• Protection level: IP67
• Connecting mode: Bayonet Lock (quarter‑turn)
• Flame‑retardant rating: UL94‑V0
• Operating temperature: -40℃ to 105℃
• Certifications: ISO9001, CE, UL, RoHS
• Available pin configurations: 2, 3, 4, 5, 2+4, 3+9 (see specification matrix for pin diameters and ratings)

Applications

• EV charging stations and on‑board charging interfaces
• Energy storage systems (ESS) and battery cabinets
• Battery pack interconnections and maintenance ports
• Outdoor power distribution for industrial installations

Ordering & Notes

• Custom cable assemblies and pin layouts available on request.
• Confirm mating face and panel cutout before installation.
• Consult datasheet for detailed pin‑by‑pin ratings and sealing procedures.