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MACURCO

Macurco is a manufacturer of fixed gas detection and refrigerant leak detection equipment, with a product history that includes carbon monoxide, combustible gas, and refrigerant monitoring for commercial and industrial buildings. The brand's catalog spans wall-mounted controllers, stand-alone detectors, and calibration accessories. 3G Electric supplies Macurco gas detectors, controllers, and calibration kits globally, with 84 SKUs listed in our catalog. The line is organized around several functional families. Fixed gas detectors include the GD-6 series for carbon monoxide and combustible gas monitoring, typically used in parking structures, boiler rooms, and mechanical spaces. The GBC series controllers, such as the GBC-6-24, are wall-mounted digital units that accept transmitter inputs and provide relay outputs for ventilation or alarm control. These controllers operate on low voltage, 12 to 24V AC or 12 to 32V DC, and are housed in NEMA 4X enclosures for wash-down or outdoor-adjacent environments. Refrigerant leak detectors form another major family. The RD-VRF series is designed for variable refrigerant flow HVAC systems and uses infrared sensor technology. These units are compatible with A2L refrigerants including R-1234ze, R-1234yf, R-32, R-455A, and R-454C, as well as R-407C. They operate on 14 to 24V DC and provide Modbus RS-485 output for integration with building management systems. The detectors are available in PPM and LEL measurement configurations depending on the target gas and application. Macurco also offers calibration kits and replacement sensors to support maintenance programs. For technical buyers, the relevant qualities are the sensor type, measurement range, output protocol, and enclosure rating. The infrared sensors used in the VRF detectors are intended for long-term stability in refrigerant monitoring. The Modbus RS-485 interface allows direct connection to BAS or EMS platforms without additional gateways. The NEMA 4X rating on controllers supports installation in mechanical rooms, parking garages, and other non-conditioned spaces. 3G Electric supports the Macurco line with datasheets, SKU-level specifications, and logistics coordination for international shipments. Our catalog includes the GBC-6-24 controller, the RD-VRF series refrigerant detectors, and related accessories. Plant engineers and maintenance managers can use the listed specifications to verify voltage compatibility, output type, and refrigerant compatibility before specifying or replacing units. Procurement specialists can request quotes by SKU and confirm availability for multi-unit orders. We do not manufacture or modify Macurco products; we distribute the catalog as published by the manufacturer. For applications requiring custom calibration or system integration, the Modbus output and low-voltage wiring simplify connection to existing control panels. The product families are intended for continuous monitoring, not portable spot-checking, and are typically installed as part of a fixed detection system. When selecting a detector, confirm the target gas, required measurement range, and the communication protocol expected by the control system. The Macurco line covers common refrigerant and combustion gas monitoring needs with standard industrial interfaces.

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About MACURCO

Macurco is a manufacturer of fixed gas detection and refrigerant leak detection equipment, with a product history that includes carbon monoxide, combustible gas, and refrigerant monitoring for commercial and industrial buildings. The brand's catalog spans wall-mounted controllers, stand-alone detectors, and calibration accessories. 3G Electric supplies Macurco gas detectors, controllers, and calibration kits globally, with 84 SKUs listed in our catalog. The line is organized around several functional families. Fixed gas detectors include the GD-6 series for carbon monoxide and combustible gas monitoring, typically used in parking structures, boiler rooms, and mechanical spaces. The GBC series controllers, such as the GBC-6-24, are wall-mounted digital units that accept transmitter inputs and provide relay outputs for ventilation or alarm control. These controllers operate on low voltage, 12 to 24V AC or 12 to 32V DC, and are housed in NEMA 4X enclosures for wash-down or outdoor-adjacent environments. Refrigerant leak detectors form another major family. The RD-VRF series is designed for variable refrigerant flow HVAC systems and uses infrared sensor technology. These units are compatible with A2L refrigerants including R-1234ze, R-1234yf, R-32, R-455A, and R-454C, as well as R-407C. They operate on 14 to 24V DC and provide Modbus RS-485 output for integration with building management systems. The detectors are available in PPM and LEL measurement configurations depending on the target gas and application. Macurco also offers calibration kits and replacement sensors to support maintenance programs. For technical buyers, the relevant qualities are the sensor type, measurement range, output protocol, and enclosure rating. The infrared sensors used in the VRF detectors are intended for long-term stability in refrigerant monitoring. The Modbus RS-485 interface allows direct connection to BAS or EMS platforms without additional gateways. The NEMA 4X rating on controllers supports installation in mechanical rooms, parking garages, and other non-conditioned spaces. 3G Electric supports the Macurco line with datasheets, SKU-level specifications, and logistics coordination for international shipments. Our catalog includes the GBC-6-24 controller, the RD-VRF series refrigerant detectors, and related accessories. Plant engineers and maintenance managers can use the listed specifications to verify voltage compatibility, output type, and refrigerant compatibility before specifying or replacing units. Procurement specialists can request quotes by SKU and confirm availability for multi-unit orders. We do not manufacture or modify Macurco products; we distribute the catalog as published by the manufacturer. For applications requiring custom calibration or system integration, the Modbus output and low-voltage wiring simplify connection to existing control panels. The product families are intended for continuous monitoring, not portable spot-checking, and are typically installed as part of a fixed detection system. When selecting a detector, confirm the target gas, required measurement range, and the communication protocol expected by the control system. The Macurco line covers common refrigerant and combustion gas monitoring needs with standard industrial interfaces.

Common Applications

  • Commercial HVAC — RD-VRF series refrigerant leak detectors for A2L refrigerants in variable refrigerant flow systems
  • Parking structures — GD-6 carbon monoxide detectors with GBC-6-24 controllers for ventilation control
  • Boiler rooms — GBC-6-24 controller paired with GD-6 for natural gas or propane leak monitoring
  • Mechanical rooms — NEMA 4X rated GBC-6-24 controllers for wash-down or humid environments
  • Building management integration — RD-VRF detectors with Modbus RS-485 output for BAS connection
  • Refrigerant monitoring — RD-VRF models for R-407C, R-1234yf, R-32, R-455A, and R-454C leak detection

Frequently asked questions

Common questions about MACURCO from 3G Electric.

What refrigerants are supported by the Macurco RD-VRF series refrigerant leak detectors?

The RD-VRF series includes models for R-1234ze, R-1234yf, R-32, R-455A, R-454C, and R-407C. A2L compatibility is indicated for most models, with the R-407C version listed as not A2L compatible. Each detector uses an infrared sensor and provides a Modbus RS-485 output. Operating voltage is 14 to 24V DC. When selecting a model, match the refrigerant type and the required measurement range, either PPM or LEL, to the application. The specific MPN, such as RD-VRF-R1234ze-PPM-M, identifies the refrigerant and measurement configuration.

What is the Macurco GBC-6-24 controller used for?

The GBC-6-24 is a wall-mounted digital controller designed for use with the GD-6 fixed gas detector. It accepts transmitter inputs for carbon monoxide, natural gas, or propane and provides a digital display and relay outputs for alarm or ventilation control. The controller operates on low voltage, 12 to 24V AC or 12 to 32V DC, and is housed in a NEMA 4X enclosure. It is typically installed in commercial or industrial spaces where fixed gas detection is required, such as boiler rooms or parking structures. The controller does not include the detector; the GD-6 transmitter is ordered separately.

What output protocol do Macurco VRF refrigerant detectors provide?

Macurco VRF refrigerant detectors in the RD-VRF series provide a Modbus RS-485 output. This allows direct connection to building management systems, energy management systems, or other controllers that accept Modbus RTU over RS-485. The detectors operate on 14 to 24V DC and use infrared sensor technology. The Modbus interface provides digital communication of gas concentration or alarm status, depending on the model configuration. For integration, confirm the register map and baud rate settings from the manufacturer's documentation. The RS-485 wiring should follow standard practices for daisy-chain topology and termination.

Are Macurco gas detectors suitable for outdoor or wash-down environments?

Some Macurco products, such as the GBC-6-24 controller, are housed in NEMA 4X enclosures. NEMA 4X rating indicates protection against dust, rain, and hose-directed water, and corrosion resistance. This makes the controller suitable for mechanical rooms, parking garages, and other non-conditioned spaces. The refrigerant detectors in the RD-VRF series are typically installed in HVAC equipment rooms or ceilings, and their enclosure rating should be verified per model. For outdoor installation, additional shielding or a suitable enclosure may be required. Always confirm the specific product datasheet for the environmental rating of the exact model.

What calibration accessories are available for Macurco gas detectors?

Macurco offers calibration kits and replacement sensors for its gas detection line. These are used to verify and maintain detector accuracy over time. Calibration kits typically include a gas cylinder, regulator, tubing, and applicable adapters. The specific kit depends on the target gas and detector model. For the RD-VRF series, calibration may involve zero and span gas procedures as described in the product manual. 3G Electric lists calibration kits and related accessories in the Macurco catalog. When ordering, match the kit to the detector MPN and the target gas. Replacement sensors are also available for field service.

How does 3G Electric support Macurco product selection and procurement?

3G Electric provides SKU-level product data, including voltage, output type, refrigerant compatibility, and enclosure ratings, to help technical buyers verify specifications. Our catalog includes 84 Macurco SKUs, covering controllers, refrigerant leak detectors, and calibration accessories. We ship globally and can coordinate logistics for international orders. Procurement specialists can request quotes by SKU and confirm availability for single or multi-unit purchases. We do not provide engineering design services or custom manufacturing; we distribute the manufacturer's standard catalog. For application-specific questions, refer to the manufacturer's datasheets and installation manuals, which we can provide upon request.