Product Description
The 00591-51301-81 is a replacement contact set for electric lift trucks requiring SB350 2/0 control components. This contact set manages lift, lower, directional, and travel control circuits in 24V and 36V battery-powered systems. Engineered for reliable operation in demanding warehouse, dock, and outdoor environments, this direct-replacement component restores responsive control actuation when original contacts show wear, pitting, or oxidation. Compatible with equipment from major lift truck manufacturers including Crown, Toyota, Raymond, and Yale. Contact sets are critical to safe, responsive equipment operation—replace when controls respond sluggishly or fail to engage consistently.
Specifications
Product Overview
| Part Number | 00591-51301-81 |
| Product Type | Contact Set |
| Model | SB350 2/0 |
| Cross-Reference Part | 00591-51300-81 |
Physical Specifications
| Voltage Rating | 24V or 36V DC |
| Amperage Rating | 10-50 amps (circuit dependent) |
| Functions Controlled | Lift, Lower, Directional, Travel |
| Contact Surface Condition Indicators | Pitting, corrosion, black oxidation |
| Typical Service Life | 18-48 months (varies by duty cycle) |
Compatibility
| Application | Electric Lift Truck Control Systems |
| Compatible Brands | Crown, Toyota, Raymond, Yale |
Frequently Asked Questions
Q: What equipment does the 00591-51301-81 contact set fit?
A: The 00591-51301-81 is an SB350 2/0 contact set compatible with electric lift trucks from Crown, Toyota, Raymond, Yale, and other OEMs using 24V or 36V control systems. Verify your equipment specifies the SB350 2/0 contact configuration before ordering this part.
Q: How do I know if my truck needs a new contact set?
A: Replace the contact set if lift, lower, or directional controls respond slowly or intermittently, if controls fail to engage consistently, or if electrical testing confirms high resistance across the contact path. Visual inspection of pitting, corrosion, or black oxidation on contact surfaces also indicates replacement is needed.
Q: How long do SB350 contact sets typically last in service?
A: Contact set life varies by duty cycle and environmental conditions. Heavy-use trucks in outdoor or wet environments may require replacement every 18 to 24 months. Light-use or warehouse trucks may operate 3 to 4 years between replacements. Dirty or salt-air environments accelerate contact deterioration significantly.
Q: Is the 00591-51301-81 identical to the 00591-51300-81?
A: Yes. Both the 00591-51300-81 and 00591-51301-81 are functionally identical SB350 2/0 contact sets with the same specifications, dimensions, and fitment. They are cross-reference or sequential part numbers for the same component and are fully interchangeable.
Q: What electrical specifications does this contact set have?
A: The SB350 2/0 contact set is rated for 24V or 36V DC control circuits typical of lift truck operators. It handles control switching loads, typically 10 to 50 amps depending on the specific circuit (lift, lower, steering, or travel). Using contacts rated for your voltage and amperage is critical to prevent arcing and premature failure.
Q: Do I need to replace both contact sets if one fails?
A: If your truck has separate contact sets for different functions (lift and lower, or forward and reverse), you may replace only the failed set. However, if sets are the same age and type, replacing both simultaneously reduces the risk of a second failure occurring within months. Consult your equipment service manual for guidance on your specific model.