The Genie 139644-21B61GT is a genuine OEM Blue Tab Micro Limit Switch built for the Genie SX-180 super-boom telescopic lift. As a direct OEM replacement, this switch is manufactured to the same specifications as the original component installed at the factory, ensuring correct electrical behavior and reliable activation. Cross-reference part number 139644-21B61GT against your SX-180 parts manual before ordering to confirm this is the correct switch for your machine's configuration.
Key Features
- Genuine OEM Electrical Specification — Built to the exact switching characteristics required by the SX-180, including correct actuation force and contact ratings for the application.
- Color-Coded Blue Tab for Positive Identification — The distinctive blue tab makes installation and future inspection straightforward, reducing the risk of misidentification when multiple limit switches are present on the machine.
- Direct OEM Replacement — Fits the Genie SX-180 as a drop-in replacement with no modification to wiring or mounting hardware.
- Consistent Switching Performance — A properly functioning limit switch signals the machine's control system at the correct trigger point; a worn or mis-actuating switch can cause control faults, unexpected stops, or missed position signals.
- Operational Safety Relevance — Limit switches are a critical part of the SX-180's position-sensing and travel-limiting system. Using the correct OEM part maintains the integrity of those control functions.
A limit switch is an electromechanical device that detects the position or movement of a machine component and sends a signal to the control system when a defined point is reached. On a super-boom lift like the SX-180, limit switches play a role in monitoring boom travel, platform positioning, and motion boundaries that keep the machine operating within its designed parameters. When a limit switch fails or actuates inconsistently, the control system may receive incorrect position data, leading to fault codes, interrupted function, or loss of travel-limit protection — making prompt replacement with the correct OEM part essential.
Part Details
| Part Number | 139644-21B61GT |
|---|---|
| Brand | Genie |
| Part Type | Genuine OEM |
| Description | Blue Tab Micro Limit Switch |
Compatibility & Fitment
| Name | Models |
|---|---|
| SX-180 | SX-180 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
