Product Description
This direct replacement 300A main contactor is designed for Toyota electric lift trucks operating on 36VDC or 48VDC systems. The contactor provides reliable traction circuit control with 300A continuous current capacity, threaded copper stud terminals for secure bolted connections, and an auxiliary contact for control circuit integration. Built for demanding warehouse and material-handling environments, it delivers dependable performance across repeated duty cycles.
Specifications
Electrical
| Nominal Coil Voltage | 36VDC / 48VDC (dual voltage rated) |
| Continuous Current Capacity | 300A at rated voltage |
| Auxiliary Contact Type | Single-pole normally-open (SPNO), 0.625 inch tip |
Mechanical & Construction
| Terminal Type | Threaded copper stud terminals, 0.625 inch diameter |
| Cycle Life | Minimum 100,000 mechanical cycles at rated load |
| Construction | Heavy-duty design for traction circuit disconnect applications |
Part Numbers & Cross-References
| Part Number | 00591-56807-81 |
| Cross-Reference Part Numbers | TY00591-56807-81 |
| Replaces / Supersedes | Replaces 00591-51687-81; supersedes 00591-23780-81 |
| Application | Traction circuit disconnect for Toyota 36V/48V electric lift trucks |
Frequently Asked Questions
Q: What is the continuous current rating of the TO 00591-56807-81 main contactor?
A: The TO 00591-56807-81 is rated for 300 amps continuous service at both 36VDC and 48VDC. It is designed as a high-current traction circuit disconnect contactor for Toyota electric lift trucks.
Q: What are the terminal specifications for this contactor?
A: The TO 00591-56807-81 features 0.625-inch diameter threaded copper stud terminals for bolted power connections. Copper studs provide low-resistance electrical contact suitable for 300A continuous duty applications.
Q: What is the coil voltage for the TO 00591-56807-81?
A: The TO 00591-56807-81 main contactor is designed for 36VDC or 48VDC coil operation, matching the system voltage of Toyota electric lift trucks using these nominal voltage ratings.
Q: Does this contactor have an auxiliary contact?
A: Yes. The TO 00591-56807-81 includes a single-pole normally-open (SPNO) auxiliary contact rated at 0.625 inches tip. This contact is commonly used for control circuit interlocks or status signaling in traction system circuits.
Q: Are there cross-reference or superseding part numbers for the TO 00591-56807-81?
A: Yes. The TO 00591-56807-81 cross-references to manufacturer part number TY00591-56807-81. It replaces and supersedes Toyota part number 00591-51687-81 and is equivalent to 00591-23780-81. Verify cross-references against your equipment manual before ordering.
Q: What is the construction of this contactor?
A: The TO 00591-56807-81 is built with heavy-duty construction designed to handle repeated engagement and disengagement cycles in traction circuit applications. This robust design ensures reliable operation in demanding material-handling environments.