Linear 2520-531 460V 3-Phase SWG Controller
The Linear 2520-531 controller is a commercial swing gate operator control assembly for 460V, three-phase SWG applications. It belongs to the Linear / OSCO commercial operator parts family, where the exact controller is selected by operator series, voltage, phase, and horsepower. In the field, a controller replacement may be considered after lightning damage, water intrusion, failed outputs, motor-control problems, damaged terminals, or repeated control faults, but the failed part should be diagnosed before replacing it. This board/control assembly must be matched to the SWG operator nameplate and parts diagram. Using the wrong voltage or phase controller can damage equipment and create unsafe gate movement. Any control replacement should also include a review of limit operation, safety inputs, accessory wiring, monitored entrapment devices, and proper warning signage before the gate is returned to service.
Compatible With
- Linear / OSCO SWG commercial swing gate operators where the parts diagram calls for 2520-531
- SWG 460V three-phase controller applications
- Select SWG/APeX swing gate control assemblies requiring the 460V 3P version
- Commercial and industrial swing gate systems with matching nameplate voltage, phase, and horsepower
- Not interchangeable with 115V, 208/230V, single-phase, slide-gate, barrier-gate, or different horsepower controllers
Features & Specifications
| Manufacturer | Linear / OSCO |
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| Product Type | Gate operator controller |
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| Part Number | 2520-531 |
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| Application | SWG commercial swing gate operator control |
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| Compatible Operator Type | Select Linear / OSCO SWG swing gate operators |
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| Voltage | 460 VAC |
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| Phase | 3 phase |
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| Notes | Match by operator nameplate, parts diagram, horsepower, wiring, and controller generation |
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Also Known As / Related Part Numbers
- 2520-531
- LIN-2520-531
- Linear 2520-531
- Controller 460V 3P SWG
- 460V 3-Phase SWG Controller
- SWG 460V 3P Control Assembly
Technician Note
Match this control by the operator nameplate and parts diagram, not by appearance alone. Voltage, phase, horsepower, controller generation, terminal layout, and safety-device wiring must all be correct before power is applied.
Before Ordering
- Confirm the manufacturer part number on the existing part or parts diagram.
- Compare the product function, mounting style, wiring, and included components to the current installation.
- Do not assume similar-looking Linear, OSCO, or Linear PRO Access parts are interchangeable.
- Verify voltage, phase, horsepower, and operator series on the nameplate.
- Confirm monitored safety-device wiring and accessory wiring before returning the gate to service.
Professional Advisory
This product may involve high-voltage wiring or safety-critical gate operation. Installation, diagnosis, and final safety testing should be performed by a qualified gate technician.
Product Q&A
What operator series is the 2520-531 used with?
It is associated with Linear / OSCO SWG commercial swing gate operator applications requiring a 460V three-phase controller.
Can this replace a 208/230V controller?
No. A 460V three-phase controller should not be substituted for a different voltage or phase controller.
What should be matched before ordering?
Match the SWG operator model, nameplate voltage, phase, horsepower, parts diagram, connector layout, and controller generation.
What symptoms might lead to controller replacement?
Lightning damage, water damage, failed outputs, damaged terminals, or diagnosed control faults may lead to replacement, but the system should be tested first.
Who should install this controller?
A qualified gate technician should install and test high-voltage commercial operator controls and verify all safety inputs.
