The Ranco® A12 and 9531 Series Constant Cut-in Temperature Controls are designed to switch electrical components of refrigeration systems in response to sensed temperatures.

Features and Benefits

Laser-welded stainless steel bellows
Fixed or adjustable temperature settings
High-amperage contacts
Pneumatic action provided by vapor-filled capillary or capillary with bulb sensing elements
Constant On or Off positions available
Choice of mounting brackets, adjustment ranges and cams, and slotted or flatted shafts
Standard 1/4” quick-connect terminals with optional screw terminals

The Ranco® A12 and 9531 Series Constant Cut-in Temperature Controls are designed to switch electrical components of refrigeration systems in response to sensed temperatures.

Features and Benefits

Laser-welded stainless steel bellows
Fixed or adjustable temperature settings
High-amperage contacts
Pneumatic action provided by vapor-filled capillary or capillary with bulb sensing elements
Constant On or Off positions available
Choice of mounting brackets, adjustment ranges and cams, and slotted or flatted shafts
Standard 1/4” quick-connect terminals with optional screw terminals

The Ranco® A12 and 9531 Series Constant Cut-in Temperature Controls are designed to switch electrical components of refrigeration systems in response to sensed temperatures.

Features and Benefits

Laser-welded stainless steel bellows
Fixed or adjustable temperature settings
High-amperage contacts
Pneumatic action provided by vapor-filled capillary or capillary with bulb sensing elements
Constant On or Off positions available
Choice of mounting brackets, adjustment ranges and cams, and slotted or flatted shafts
Standard 1/4” quick-connect terminals with optional screw terminals

The Ranco® A12 and 9531 Series Constant Cut-in Temperature Controls are designed to switch electrical components of refrigeration systems in response to sensed temperatures.

Features and Benefits

Laser-welded stainless steel bellows
Fixed or adjustable temperature settings
High-amperage contacts
Pneumatic action provided by vapor-filled capillary or capillary with bulb sensing elements
Constant On or Off positions available
Choice of mounting brackets, adjustment ranges and cams, and slotted or flatted shafts
Standard 1/4” quick-connect terminals with optional screw terminals

The Ranco® O Series Single High Pressure Controls offer a variety of pressure ranges and switch action to provide maximum application flexibility.

Features and Benefits

NEMA 1 enclosure with non-conductive cover
Front-located captive cover screw
Large, easy-to-read scale plate
Super Cap® capillary protection system
Universal mounting and compact design
Screw terminals are raised and fully accessible for
easy wiring
Laser-welded bellows for extended life
Heavy-duty plated steel frame
Cap included on all Australia temperature controls. Optional for all other regions.

The Ranco® O Series Single Low Pressure Controls offer a variety of pressure ranges and switch action to provide maximum application flexibility.

Features and Benefits

Controls available for most refrigerant types
High-amp rated switch (SPST) design (O10-1402/O10-1483)
Super Cap® capillary vibration protection system
Non-conductive front cover with captive screw
Adjustable differential and range
Easy-to-read scale plate
Vibration cone (absorbs and reduces vibration away from brazed joint)
Low mass copper alloy capillary tube (reduces capillary stress caused by equipment vibration)
The O16-624 control has additional features:

Compatible with refrigerants 134A, 401A, 401B, 402A, 402B, 403A, 403B and 404A
Cap included on all Australia temperature controls. Optional for all other regions

The Ranco® O Series Single High Pressure Controls offer a variety of pressure ranges and switch action to provide maximum application flexibility.

Features and Benefits

NEMA 1 enclosure with non-conductive cover
Front-located captive cover screw
Large, easy-to-read scale plate
Super Cap® capillary protection system
Universal mounting and compact design
Screw terminals are raised and fully accessible for
easy wiring
Laser-welded bellows for extended life
Heavy-duty plated steel frame
Cap included on all Australia temperature controls. Optional for all other regions.

The Ranco® O Series Single Low Pressure Controls offer a variety of pressure ranges and switch action to provide maximum application flexibility.

Features and Benefits

Controls available for most refrigerant types
High-amp rated switch (SPST) design (O10-1402/O10-1483)
Super Cap® capillary vibration protection system
Non-conductive front cover with captive screw
Adjustable differential and range
Easy-to-read scale plate
Vibration cone (absorbs and reduces vibration away from brazed joint)
Low mass copper alloy capillary tube (reduces capillary stress caused by equipment vibration)
The O16-624 control has additional features:

Compatible with refrigerants 134A, 401A, 401B, 402A, 402B, 403A, 403B and 404A
Cap included on all Australia temperature controls. Optional for all other regions

Features and Benefits
Single relay output combined with a cyclical timer for system defrosting.
A manual defrost can be set through the controller or via manual shutdown of the refrigeration system.

The TC-900E Series Controllers operate with two sensors, one for room temperature and the other fastened to the evaporator to control defrost and fan functions.

Features and Benefits
The TC-900E Digital Controllers automate the defrost process according to the needs of facilities defrost cycles while providing energy savings.
Adaptive defrost capable for energy savings
Adaptive defrost can be less harsh on inventories eliminating unneeded defrost cycles
Fast freezing better protects inventorie

The Ranco® ETC Series Electronic Temperature Control offers a full-featured electronic replacement for electrical-mechanical temperature controls used in many commercial refrigeration applications. With its wide temperature range, one and two stage capability, selectable heating/cooling modes and multi-voltage input, the ETC is designed to provide application flexibility. Models available include 120/208/240V AC and 24V AC.

Features and Benefits

Anti-short cycle compressor delay for cooling applications
Wide temperature range (-30°F to 220°F) (-34.4°C to 104.4°C)
Wide differential adjustment (1°F to 30°F) (-17°C to -1°C)
LCD read-out for sensor temperature, control settings, and relay status
High Amp output relay (FLA 16 Amps @ 120V AC and 8 Amps @ 208/240V AC) single stage
EEPROM memory retains control settings during power outages
Keypad lockout to prevent end-user alteration of settings
8 foot lead with sensor is extendable up to 400 feet using 18 or 22-gauge thermostat wire
Easy 4-step set-up
Heavy-duty relay is 1 HP rated
Selectable °F or °C heating/cooling modes
Single and two stage models
NEMA 1 case and cover
NEMA 4X models available
White backlight on display
Sensor rated IP67 for dust and water (<1m) resistance

The Ranco® ETC Series Electronic Temperature Control offers a full-featured electronic replacement for electrical-mechanical temperature controls used in many commercial refrigeration applications. With its wide temperature range, one and two stage capability, selectable heating/cooling modes and multi-voltage input, the ETC is designed to provide application flexibility. Models available include 120/208/240V AC and 24V AC.

Features and Benefits

Anti-short cycle compressor delay for cooling applications
Wide temperature range (-30°F to 220°F) (-34.4°C to 104.4°C)
Wide differential adjustment (1°F to 30°F) (-17°C to -1°C)
LCD read-out for sensor temperature, control settings, and relay status
High Amp output relay (FLA 16 Amps @ 120V AC and 8 Amps @ 208/240V AC) single stage
EEPROM memory retains control settings during power outages
Keypad lockout to prevent end-user alteration of settings
8 foot lead with sensor is extendable up to 400 feet using 18 or 22-gauge thermostat wire
Easy 4-step set-up
Heavy-duty relay is 1 HP rated
Selectable °F or °C heating/cooling modes
Single and two stage models
NEMA 1 case and cover
NEMA 4X models available
White backlight on display
Sensor rated IP67 for dust and water (<1m) resistance

The Ranco® ETC Series Electronic Temperature Control offers a full-featured electronic replacement for electrical-mechanical temperature controls used in many commercial refrigeration applications. With its wide temperature range, one and two stage capability, selectable heating/cooling modes and multi-voltage input, the ETC is designed to provide application flexibility. Models available include 120/208/240V AC and 24V AC.

Features and Benefits

Anti-short cycle compressor delay for cooling applications
Wide temperature range (-30°F to 220°F) (-34.4°C to 104.4°C)
Wide differential adjustment (1°F to 30°F) (-17°C to -1°C)
LCD read-out for sensor temperature, control settings, and relay status
High Amp output relay (FLA 16 Amps @ 120V AC and 8 Amps @ 208/240V AC) single stage
EEPROM memory retains control settings during power outages
Keypad lockout to prevent end-user alteration of settings
8 foot lead with sensor is extendable up to 400 feet using 18 or 22-gauge thermostat wire
Easy 4-step set-up
Heavy-duty relay is 1 HP rated
Selectable °F or °C heating/cooling modes
Single and two stage models
NEMA 1 case and cover
NEMA 4X models available
White backlight on display
Sensor rated IP67 for dust and water (<1m) resistance

The Ranco® ETC Series Electronic Temperature Control offers a full-featured electronic replacement for electrical-mechanical temperature controls used in many commercial refrigeration applications. With its wide temperature range, one and two stage capability, selectable heating/cooling modes and multi-voltage input, the ETC is designed to provide application flexibility.

Features and Benefits

Anti-short cycle compressor delay for cooling applications
Wide temperature range (-30°F to 220°F) (-34.4°C to 104.4°C)
Wide differential adjustment (1°F to 30°F)
LCD read-out for sensor temperature, control settings, and relay status
High Amp output relay (FLA 16 Amps @ 120V AC and 8 Amps @ 208/240V AC) single stage
EEPROM memory retains control settings during power outages
Keypad lockout to prevent end-user alteration of settings
8 foot lead with sensor is extendable up to 400 feet using 18 or 22-gauge thermostat wire
Easy 4-step set-up
Heavy-duty relay is 1 HP rated
Selectable °F or °C heating/cooling modes
Single and two stage models
NEMA 1 case and cover
NEMA 4X models available
White backlight on display
Sensor rated IP67 for dust and water (<1m) resistance

The J10 Series Humidistats and Dehumidistats are designed to regulate the relative humidity of confined spaces by cycling humidifying or dehumidifying equipment. Designed for central systems, the J10 controls are made from high impact plastic with a brushed finish dial plate. The J10's nylon sensing element provides long life and accurate humidity control.

Features and Benefits

Strong plastic frame with integral switch eliminates the need to ground the control
Improved woven nylon sensing element provides a faster response time
Greater stability in set points over dramatic changes in relative humidity
Improved differential allowing 5% relative humidity

The J10 Series Humidistats and Dehumidistats are designed to regulate the relative humidity of confined spaces by cycling humidifying or dehumidifying equipment. Designed for central systems, the J10 controls are made from high impact plastic with a brushed finish dial plate. The J10's nylon sensing element provides long life and accurate humidity control.

Features and Benefits

Strong plastic frame with integral switch eliminates the need to ground the control
Improved woven nylon sensing element provides a faster response time
Greater stability in set points over dramatic changes in relative humidity
Improved differential allowing 5% relative humidity

The J10 Series Humidistats and Dehumidistats are designed to regulate the relative humidity of confined spaces by cycling humidifying or dehumidifying equipment. Designed for central systems, the J10 controls are made from high impact plastic with a brushed finish dial plate. The J10's nylon sensing element provides long life and accurate humidity control. The J10-821 humidistat can be wall mounted or installed directly in a cold air return duct.

Features and Benefits

Strong plastic frame with integral switch eliminates the need to ground the control
Improved woven nylon sensing element provides a faster response time
Greater stability in set points over dramatic changes in relative humidity
Improved differential allowing 5% relative humidity

The J10 Series Humidistats and Dehumidistats are designed to regulate the relative humidity of confined spaces by cycling humidifying or dehumidifying equipment. Designed for central systems, the J10 controls are made from high impact plastic with a brushed finish dial plate. The J10's nylon sensing element provides long life and accurate humidity control. The J10-809W dehumidistat is designed to be wall mounted and can be wired in series or parallel with a 24 volt nonelectric thermostat.

Features and Benefits

Strong plastic frame with integral switch eliminates the need to ground the control
Improved woven nylon sensing element provides a faster response time
Greater stability in set points over dramatic changes in relative humidity
Improved differential allowing 5% relative humidity

The Ranco® Varifix International Cold Controls are designed for fast and easy service replacements. They are available for both refrigerator and freezer applications.

Features and Benefits

Trusted brand
Capillary is crimped and sealed for maximum reliability
High level of performance
Complete kit includes all necessary hardware

The Ranco® Varifix International Cold Controls are designed for fast and easy service replacements. They are available for both refrigerator and freezer applications.

Features and Benefits

Trusted brand
Capillary is crimped and sealed for maximum reliability
High level of performance
Complete kit includes all necessary hardware

The Ranco® Varifix International Cold Controls are designed for fast and easy service replacements. They are available for both refrigerator and freezer applications.

Features and Benefits

Trusted brand
Capillary is crimped and sealed for maximum reliability
High level of performance
Complete kit includes all necessary hardware

The Ranco® O Series Single Low Pressure Controls offer a variety of pressure ranges and switch action to provide maximum application flexibility.

Features and Benefits

Controls available for most refrigerant types
High-amp rated switch (SPST) design (O10-1402/O10-1483)
Super Cap® capillary vibration protection system
Non-conductive front cover with captive screw
Adjustable differential and range
Easy-to-read scale plate
Vibration cone (absorbs and reduces vibration away from brazed joint)
Low mass copper alloy capillary tube (reduces capillary stress caused by equipment vibration)
The O16-624 control has additional features:

Compatible with refrigerants 134A, 401A, 401B, 402A, 402B, 403A, 403B and 404A

These controls offer a variety of pressure ranges and switch action to provide maximum application flexibility.

Features and Benefits

NEMA 1 enclosure with non-conductive cover
Front-located captive cover screw
Large, easy-to-read scale plate
SUPER CAP® capillary protection system
Universal mounting and compact design
Screw terminals are raised and fully accessible for easy wiring
Laser-welded bellows for extended life
Heavy-duty plated steel frame
Suitable for R12, R22, and R502 applications

The Ranco® Dual Pressure Controls combine the functions of a single high-pressure limit control and a single low-pressure control in one unit with a single pole, single throw (SPST) switch.

Features and Benefits

Convertible feature allows selection of manual or reset function when operating at high pressure (O12‑4833/O12-4834)
A wide range of high-pressure manual or automatic reset controls can be replaced (O12-4833 or O12‑4834)
A high-pressure limit is combined with suction pressure sensing to provide temperature control and/or pump down
High-limit adjustment screw
Low-pressure differential and range adjusting screws
Selector screw for manual or automatic
Reset button
Low-pressure scale plate
High-impact plastic cover with center mount screw
High-pressure scale plate
Super Cap® capillary protection system
Color-coded for easy identification of pressure line
High-side capillary flare nut (silver)
Low-side capillary flare nut (brass)

The Ranco® Dual Pressure Controls combine the functions of a single high-pressure limit control and a single low-pressure control in one unit with a single pole, single throw (SPST) switch.

Features and Benefits

Convertible feature allows selection of manual or reset function when operating at high pressure (O12‑4833/O12-4834)
A wide range of high-pressure manual or automatic reset controls can be replaced (O12-4833 or O12‑4834)
A high-pressure limit is combined with suction pressure sensing to provide temperature control and/or pump down
High-limit adjustment screw
Low-pressure differential and range adjusting screws
Selector screw for manual or automatic
Reset button
Low-pressure scale plate
High-impact plastic cover with center mount screw
High-pressure scale plate
Super Cap® capillary protection system
Color-coded for easy identification of pressure line
High-side capillary flare nut (silver)
Low-side capillary flare nut (brass)

The Ranco® Dual Pressure Controls combine the functions of a single high-pressure limit control and a single low-pressure control in one unit with a single pole, single throw (SPST) switch.

Features and Benefits

Convertible feature allows selection of manual or reset function when operating at high pressure (O12‑4833/O12-4834)
A wide range of high-pressure manual or automatic reset controls can be replaced (O12-4833 or O12‑4834)
A high-pressure limit is combined with suction pressure sensing to provide temperature control and/or pump down
High-limit adjustment screw
Low-pressure differential and range adjusting screws
Selector screw for manual or automatic
Reset button
Low-pressure scale plate
High-impact plastic cover with center mount screw
High-pressure scale plate
Super Cap® capillary protection system
Color-coded for easy identification of pressure line
High-side capillary flare nut (silver)
Low-side capillary flare nut (brass)

The Ranco® Dual Pressure Controls combine the functions of a single high-pressure limit control and a single low-pressure control in one unit with a single pole, single throw (SPST) switch.

Features and Benefits

Convertible feature allows selection of manual or reset function when operating at high pressure (O12‑4833/O12-4834)
A wide range of high-pressure manual or automatic reset controls can be replaced (O12-4833 or O12‑4834)
A high-pressure limit is combined with suction pressure sensing to provide temperature control and/or pump down
High-limit adjustment screw
Low-pressure differential and range adjusting screws
Selector screw for manual or automatic
Reset button
Low-pressure scale plate
High-impact plastic cover with center mount screw
High-pressure scale plate
Super Cap® capillary protection system
Color-coded for easy identification of pressure line
High-side capillary flare nut (silver)
Low-side capillary flare nut (brass)

The Ranco® Dual Pressure Controls combine the functions of a single high-pressure limit control and a single low-pressure control in one unit with a single pole, single throw (SPST) switch.

Features and Benefits

Convertible feature allows selection of manual or reset function when operating at high pressure (O12‑4833/O12-4834)
A wide range of high-pressure manual or automatic reset controls can be replaced (O12-4833 or O12‑4834)
A high-pressure limit is combined with suction pressure sensing to provide temperature control and/or pump down
High-limit adjustment screw
Low-pressure differential and range adjusting screws
Selector screw for manual or automatic
Reset button
Low-pressure scale plate
High-impact plastic cover with center mount screw
High-pressure scale plate
Super Cap® capillary protection system
Color-coded for easy identification of pressure line
High-side capillary flare nut (silver)
Low-side capillary flare nut (brass)