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RANCO

RANCO is a brand of industrial controls and components primarily serving the HVACR (heating, ventilation, air conditioning, and refrigeration) sector. The brand is historically associated with the development of reliable electromechanical controls for refrigeration systems, including temperature controls, pressure controls, defrost controls, and related accessories. RANCO products are widely used in commercial refrigeration, industrial cooling, and HVAC applications where precise regulation of temperature and pressure is required. The product line includes constant differential defrost controls, dual pressure controls, single-pressure switches, refrigeration temperature controls, mechanical lube oil pressure controls, and steel shell filter driers. These components are designed to meet specific operational parameters such as temperature ranges from -15°F to 40°F, pressure ranges from 12 in Hg to 735 psi, and voltage ratings up to 240V AC. Many RANCO controls feature SPST (single-pole single-throw) switch configurations, capillary tubes with remote bulbs for sensing, and NEMA 1 enclosures for indoor use. The brand is known for its focus on durability and repeatability in cycling, with defrost controls offering fixed differentials like 9°F cold off and 22°F warm on, or 3°F cold off and 47°F warm on. Pressure controls include auto-reset and manual-reset options, with switch actions such as open on fall or close on rise. RANCO also supplies filter driers with activated alumina cores for HCFC refrigerant systems, sized for systems up to 50 tons. 3G Electric stocks over 290 SKUs of RANCO products, providing datasheets and logistics support for procurement specialists and maintenance managers. The inventory covers a range of applications from walk-in coolers and freezers to compressor protection and liquid line filtration. Each product is specified with manufacturer part numbers, voltage ratings, pressure set points, and capillary lengths to facilitate direct replacement or new installation. RANCO components are typically used as OEM replacements or service parts in commercial refrigeration equipment, and their specifications are documented for compatibility with standard HVACR systems. The brand does not claim proprietary certifications beyond standard industry norms, and its products are selected for their functional reliability in demanding environments.

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About RANCO

RANCO is a brand of industrial controls and components primarily serving the HVACR (heating, ventilation, air conditioning, and refrigeration) sector. The brand is historically associated with the development of reliable electromechanical controls for refrigeration systems, including temperature controls, pressure controls, defrost controls, and related accessories. RANCO products are widely used in commercial refrigeration, industrial cooling, and HVAC applications where precise regulation of temperature and pressure is required. The product line includes constant differential defrost controls, dual pressure controls, single-pressure switches, refrigeration temperature controls, mechanical lube oil pressure controls, and steel shell filter driers. These components are designed to meet specific operational parameters such as temperature ranges from -15°F to 40°F, pressure ranges from 12 in Hg to 735 psi, and voltage ratings up to 240V AC. Many RANCO controls feature SPST (single-pole single-throw) switch configurations, capillary tubes with remote bulbs for sensing, and NEMA 1 enclosures for indoor use. The brand is known for its focus on durability and repeatability in cycling, with defrost controls offering fixed differentials like 9°F cold off and 22°F warm on, or 3°F cold off and 47°F warm on. Pressure controls include auto-reset and manual-reset options, with switch actions such as open on fall or close on rise. RANCO also supplies filter driers with activated alumina cores for HCFC refrigerant systems, sized for systems up to 50 tons. 3G Electric stocks over 290 SKUs of RANCO products, providing datasheets and logistics support for procurement specialists and maintenance managers. The inventory covers a range of applications from walk-in coolers and freezers to compressor protection and liquid line filtration. Each product is specified with manufacturer part numbers, voltage ratings, pressure set points, and capillary lengths to facilitate direct replacement or new installation. RANCO components are typically used as OEM replacements or service parts in commercial refrigeration equipment, and their specifications are documented for compatibility with standard HVACR systems. The brand does not claim proprietary certifications beyond standard industry norms, and its products are selected for their functional reliability in demanding environments.

Common Applications

  • Commercial refrigeration — RANCO A12-1506 constant differential defrost control for walk-in freezer defrost cycles
  • HVAC system protection — RANCO RHS-250150 high-limit pressure switch for overpressure safety in chillers
  • Industrial cooling — RANCO O12-1506 dual pressure control for monitoring suction and discharge pressures in refrigeration racks
  • Food storage — RANCO O10-1408 temperature control for maintaining -15°F to 40°F in cold storage rooms
  • Compressor protection — RANCO P30-3701 mechanical lube oil pressure control for Danfoss compressors in supermarket refrigeration
  • Refrigerant filtration — RANCO RBFD-163 liquid line filter drier for moisture removal in HCFC systems up to 50 tons

Frequently asked questions

Common questions about RANCO from 3G Electric.

What types of defrost controls does RANCO offer?

RANCO offers constant differential defrost controls, such as the A12-1506 and A30-262 models. These are SPST devices with fixed temperature differentials for defrost cycle initiation and termination. The A12-1506 has a 9°F cold off and 22°F warm on setting, while the A30-262 has a 3°F cold off and 47°F warm on setting. They include capillary tubes with bulbs for remote sensing and are rated for 120V or 120/240V AC. These controls are used in commercial refrigeration systems to manage defrost cycles automatically.

What are the specifications of RANCO dual pressure controls like the O12-1506?

The RANCO O Series O12-1506 is a dual pressure control with an SPST switch. It has a low-side pressure range of 12 in Hg to 50 psi and a high-side range of 100 psi to 250 psi. It is housed in a NEMA 1 enclosure and is designed for use in refrigeration systems to monitor both suction and discharge pressures. The control provides a single-pole switch action for safety or cycling functions.

How do RANCO single-pressure switches like the RHS-250150 work?

The RANCO RHS-250150 is a high-limit pressure switch with an SPST contact form rated for 36V DC. It has an open-on-fall switch action and auto reset, with a pressure set point range of 0 psi to 735 psi and a differential of 100 psi. This switch is used to protect systems from overpressure by opening the circuit when pressure drops below the set point, then automatically resetting when pressure rises.

What is the temperature range for RANCO refrigeration controls like the O10-1408?

The RANCO O10-1408 is a refrigeration/freezer temperature control with a range of -15°F to 40°F. It features an SPST switch that closes on rise, a 72-inch capillary with remote bulb, and is rated for 240V AC. This control is used to regulate temperature in walk-in coolers or freezers by cycling the compressor based on sensed temperature.

Are RANCO filter driers compatible with specific refrigerants?

Yes, RANCO filter driers like the RBFD-163 are designed for HCFC refrigerant groups. This model is a steel shell liquid line filter drier with an activated alumina core, sized for systems up to 50 tons. It is used to remove moisture and contaminants from the refrigerant circuit. Always verify compatibility with your specific refrigerant type before installation.

What is the purpose of RANCO mechanical lube oil pressure controls like the P30-3701?

The RANCO P30-3701 is a mechanical lube oil pressure control designed for Danfoss compressors. It operates at 240V AC and has a pressure range of 8 psi to 60 psi with a 90-second delay. It includes an alarm circuit to indicate low oil pressure, protecting the compressor from damage due to inadequate lubrication. It is used in commercial refrigeration systems.