Why do SMH 2pin Power Connector have different colors housing?

SMH 2pin Power Connector SY Series(equivalent to SB series SB50 / SB120 / SB175 / SB350) are heavy‑duty, genderless DC power connectors. Designed for high‑current battery and power distribution use, they mate quickly, reliably, and can be stacked or panel‑mounted.

Key features

  • Genderless design: identical plugs mate to each other, eliminating male/female mistakes.
  • High current capacity: common ratings include 50A, 120A,175 A, 350 A depending on model and contact size.
  • Robust contacts: high‑conductivity copper alloy contacts with plated finishes for low resistance and long life.
  • Durable housings: flame‑retardant, high‑impact thermoplastic; some versions have environmental sealing.
  • Versatile mounting: cable, chassis/panel, and PCB/mating options; available in single and multi‑pole arrangements.
  • Keying & color options: polarization, keying kits, and color housings simplify system identification and prevent mis‑mating.
  • Serviceability: replaceable contacts and a range of tooling for crimping and assembly.

776 04 27 093633 498Why different colors housing connectors can’t match with each other?

  • Voltage/system ID: colors are commonly used to denote different nominal voltages or battery systems so operators can quickly match compatible equipment.
  • Safety / mistake prevention: different colors make it less likely to connect incompatible voltages (e.g., battery bank vs. charger) or wrong circuits.
  • Keying & compatibility: alongside physical keying, color helps ensure mating only within the intended system.
  • Customer/industry conventions: fleets or installations often adopt color standards (e.g., one color for 12 V, another for 48 V), though there is no single universal color code across all users.
  • Product/material variants: sometimes color denotes special housings (UV‑stable, sealed versions) or aesthetic/branding choices.
  • Manufacturing/ordering: colors simplify inventory and part selection for different applications.

Please inquire us for more information if any doubts before ordering.7793707 002

We endeavor to offer the most reliable and competitive products to each SMH partners and customers !

© 2026 Shenzhen SenMaiHan Technology Co.,Ltd all rights reserved

Shenzhen SenMaiHan Technology Co.,Ltd

© 2026 Shenzhen SenMaiHan Technology Co.,Ltd all rights reserved