Linear 190-110681 GSMCB01 CGA2K 120V Control Board Service Details
The Linear 190-110681 is a legacy 120V main control board identified by the GSMCB01 and CGA2K designations. It is associated with select commercial gate operator systems that used the older CGA2K control platform.
This part is sometimes described in abbreviated manufacturer and distributor data as "MCB CGO 120V GSMCB01 CGA2K VE." Although some online listings incorrectly interpret MCB as a molded case circuit breaker, legacy PowerMaster parts documentation identifies GSMCB01 as the operator control board. For replacement purposes, the original board label and operator parts diagram should be considered more important than a generic abbreviated description.
What This Part Does
The GSMCB01 functions as a primary electronic control board within compatible commercial gate operators. Depending on the operator configuration, the board interfaces with operator controls, limit circuits, motor-control components, safety inputs, access-control devices, timers, and other operator wiring.
A failed control board can produce symptoms such as no operator response, incorrect sequencing, intermittent operation, control-input problems, or other electronic faults. These symptoms can also be caused by power-supply problems, transformers, relays, limit switches, motor components, wiring, safety devices, or external controls, so the board should not be replaced solely on symptoms without proper diagnosis.
Compatible With
- Compatible with select legacy commercial gate operators using the GSMCB01 control board
- Commonly associated with older CGA2K control systems
- GSMCB01 is documented in PowerMaster SGI Series 2000 commercial slide gate operator parts information
- GSMCB01 is documented in PowerMaster CSWC Series 2000 commercial swing gate operator parts information
- May be associated with additional Linear, Allstar, and PowerMaster CGA2K operator configurations
Compatibility warning: Exact public compatibility for Linear part 190-110681 could not be fully confirmed across every CGA2K operator model. Verify the operator model number, production generation, original board part number, GSMCB01 marking, supply voltage, motor configuration, wiring harnesses, terminal arrangement, and replacement parts diagram before ordering.
Features and Specifications
| Manufacturer | Linear |
| Part Number | 190-110681 |
| Product Type | Main control board / operator control board |
| Board Reference | GSMCB01 |
| Control Platform | CGA2K |
| Listed Voltage | 120V configuration |
| Application | Select legacy commercial gate operators |
| Confirmed GSMCB01 References | PowerMaster SGI Series 2000 and CSWC Series 2000 documentation |
| Status | Legacy part; discontinued status reported by current distributor source |
| Package Contents | Control board only unless otherwise stated by seller |
Important 120V Compatibility Warning
The 190-110681 description specifically identifies a 120V configuration. Do not install this board in a 208V, 230V, 460V, three-phase, or otherwise different operator simply because the board appears physically similar.
Commercial gate operators were produced with multiple motor voltages, phases, control arrangements, and production generations. Confirm the operator data plate and electrical diagram before replacing internal control components.
Similar Parts That Are Not Automatically Interchangeable
- Linear 190-110130 - MCB RGO 120V TWISTR / CGA2K reference
- Linear 190-112518 - MCB CGO 120V GS6K / heavy-duty swing / CGA2K reference
- Linear 190-110320 - replacement MCB kit associated with Leader CGA2K systems
- GSMCB02 - similar PowerMaster control-board designation
- Other CGA2K main control boards for different operator models, voltages, or motor configurations
Do not substitute another CGA2K board based only on connector appearance or physical size. Different boards can be configured for different motors, operator types, voltages, control functions, and wiring arrangements.
Also Known As / Related Part Numbers
- 190-110681
- 190110681
- GSMCB01
- MCB CGO 120V GSMCB01 CGA2K VE
- CGA2K
The references above are associated descriptions and board markings. They should not be interpreted as separate guaranteed replacement part numbers.
Discontinued and Legacy Operator Considerations
At least one current distributor identifies 190-110681 as discontinued, while other suppliers continue to show the part in catalog listings. Remaining inventory may therefore be old stock or limited supply.
If the original board is no longer available, do not automatically install another GSMCB-series board. A manufacturer-approved replacement kit may require additional wiring changes, relays, harnesses, or control components depending on the operator generation.
Technician Note
Before condemning a GSMCB01 board, check incoming power, control voltage, fuses, transformers, motor starting components, limit switches, wiring harnesses, external control inputs, safety devices, and visible board damage. A failed peripheral component can make a good control board appear defective.
Because this board is associated with commercial operator electrical systems, voltage measurements and internal electrical diagnosis should be performed by a qualified gate or electrical technician.
Before Ordering Checklist
- Locate the complete gate operator model number.
- Confirm the operator is a legacy CGA2K system.
- Confirm the existing control board is marked GSMCB01.
- Confirm Linear part number 190-110681 where visible.
- Verify the operator is the correct 120V configuration.
- Confirm single-phase or other motor configuration from the operator data plate.
- Compare wiring harnesses and terminal connections.
- Check the operator replacement parts diagram.
- Do not substitute GSMCB02 or another CGA2K board based only on appearance.
- Confirm whether the purchase includes the board only or additional replacement hardware.
Installation and Service Notes
Disconnect and lock out operator power before servicing internal controls. Commercial gate operators can contain hazardous line voltage, stored electrical energy, moving chains, belts, gears, and other mechanical hazards.
Do not bypass photo eyes, safety edges, entrapment protection, emergency access systems, or other safety circuits to test or operate the gate. Internal board replacement, high-voltage diagnosis, motor-control troubleshooting, and final safety testing should be handled by a qualified gate or electrical technician.
Product Questions & Answers
Is Linear 190-110681 a circuit breaker or a control board?
Available legacy operator documentation identifies GSMCB01 as a PC or control board. Some reseller listings incorrectly expand the MCB abbreviation as molded case circuit breaker. For replacement purposes, 190-110681 should be treated as the GSMCB01 operator control board and verified against the original operator parts diagram.
What gate operators use Linear 190-110681?
It is associated with select legacy commercial gate operators using GSMCB01 and CGA2K technology. GSMCB01 is specifically documented in PowerMaster SGI Series 2000 slide operators and CSWC Series 2000 swing operators. Exact 190-110681 compatibility with additional models should be confirmed before ordering.
Can I replace a GSMCB02 board with this GSMCB01 board?
Do not assume so. GSMCB01 and GSMCB02 can look similar but may be designed for different operator configurations. Verify the exact original board designation, operator model, voltage, motor configuration, connectors, and parts diagram.
Can 190-110681 be used on a 230V gate operator?
The published part description identifies 190-110681 as a 120V configuration. Do not use it on a 230V or other voltage operator unless specific manufacturer documentation confirms the application.
Is Linear 190-110681 discontinued?
A current distributor source identifies the exact part as discontinued, although other suppliers continue to list it. Confirm current stock or approved replacement options before planning a repair around this legacy board.
Does this board replace every Linear or Allstar CGA2K control board?
No. CGA2K was used across multiple operator families and control-board configurations. Boards such as 190-110130, 190-112518, 190-110320, GSMCB01, and GSMCB02 should not be assumed interchangeable.
What should I verify before ordering 190-110681?
Verify the operator model, production generation, 120V electrical configuration, original GSMCB01 board marking, Linear part number, motor configuration, wiring harnesses, terminal arrangement, and replacement parts diagram.
What is included with Linear 190-110681?
Public listings primarily identify 190-110681 as the GSMCB01 control-board component. Unless the seller specifically states otherwise, do not assume that harnesses, relays, mounting hardware, transformers, or other operator components are included.
