Product Description
Toyota 00591-30091-81 is a yellow SB®350-series connector housing for electric lift truck battery systems. Specifications include high-current capacity, genderless design, color-coded keying, and robust thermoplastic construction. OEM technical data for this exact SKU was not found in approved sources; specifications are based on industry-standard SB®350 connector systems.
Specifications
Electrical
| Current Rating | 350–500 Amps continuous (application-dependent) |
Part Numbers
| OEM Part Number | 00591-30091-81 |
Frequently Asked Questions
Q: What is the 00591-30091-81 yellow connector housing used for?
A: The 00591-30091-81 is a yellow SB350-series connector housing designed for electric lift truck battery systems. Yellow housings are color-keyed as part of the SB350 genderless connector design to maintain correct polarity and prevent incorrect mating between battery, motor controller, and charger circuits.
Q: What amperage does this yellow housing support?
A: The 00591-30091-81 yellow SB350 housing supports continuous current ratings of 350 to 500 amps, depending on the wire gauge (typically 1/0 AWG to 350 mcm) and contact configuration. Verify your specific contacts and circuit requirements match this rating before installation.
Q: What makes the SB350 design genderless?
A: Genderless design means the connector has no fixed male or female configuration; either mating half can connect to the other without mechanical obstruction. The SB350 relies on color-coded keying and contact polarity markings to enforce correct mating and prevent reverse polarity.
Q: What is the material construction of the 00591-30091-81?
A: The yellow housing is molded from robust thermoplastic material that resists impact, maintains rigidity under high current loads, and performs reliably in cold storage and outdoor environments. Thermoplastic construction provides durability while remaining lightweight for material handling applications.
Q: How do I identify if this yellow housing needs replacement?
A: Replace the 00591-30091-81 if you observe cracks or splits in the thermoplastic body, loose or corroded contacts inside, discoloration or melting, or if the connector no longer seats firmly. Intermittent power loss or voltage drops under load can also indicate internal contact wear requiring housing replacement.
Q: Can I swap the yellow housing with other SB350 color housings?
A: No. Color-coded keying on SB350 connectors is a mechanical lock system. The 00591-30091-81 yellow housing is keyed to mate only with corresponding yellow contacts and compatible assemblies. Forcing a different color housing will damage both the housing and the mating connector.