Product Description
The YL 503781200 micro switch with roller actuator is an electromechanical limit switch component designed for Yale MP/MPB 040 AC electric pallet trucks. This direct-replacement part controls the steer arm and handle assembly, ensuring precise drive unit and brake control. Built for reliable performance in high-cycle warehouse and dock operations.
Specifications
Compatibility
| Compatible Equipment Models | Yale MP 040 AC, Yale MPB 040 AC electric pallet trucks |
| Assembly Location | Steer arm and handle assembly, position 13 on assembly diagram |
Part Numbers
| Manufacturer Part Number | YL 503781200 |
| Cross-Reference Part Numbers | YT503781200, YL5037812-00, 5037812-00 |
| Component Type | Roller Actuator Micro Switch |
Functional Details
| Actuator Type | Roller actuator with limit switch function |
| Control Application | Drive unit and brake control assembly |
Frequently Asked Questions
Q: What is the YL 503781200 and what does it control?
A: The YL 503781200 is a roller actuator micro switch for Yale MP/MPB 040 AC electric pallet trucks. It functions as an electromechanical limit switch in the steer arm and handle assembly control circuit, managing drive unit and brake functions.
Q: What equipment models is the YL 503781200 compatible with?
A: The YL 503781200 fits Yale MP 040 AC and Yale MPB 040 AC electric pallet trucks. It mounts at position 13 on the steer arm and handle assembly diagram.
Q: Does the YL 503781200 have alternate part numbers?
A: Yes. Cross-reference part numbers include YT503781200, YL5037812-00, and 5037812-00. All reference the same Yale micro switch component. Consult your equipment manual to verify the correct part number for your application.
Q: What type of actuator does the YL 503781200 use?
A: The YL 503781200 features a roller actuator design. The roller makes contact with moving linkage (such as steer arm movement) to trigger the switch at specific positions in the control sequence.
Q: How do I know if the YL 503781200 needs replacement?
A: Replace the YL 503781200 if steer arm or brake control function becomes intermittent, delayed, or unresponsive. High-cycle operations and moisture exposure accelerate wear on the roller actuator and electrical contacts. Test directional response and brake engagement to confirm switch condition.