©Johnstone Supply eCatalog 216

REFRIGERATION & AIR CONDITIONING Commercial Temperature Controls

Low Temperature Cut-Out (Freeze-Stat) • Provides monitoring of the face temperature of evaporator coils for freeze protection

Specifications: • Switch action: SPST open low • Range: 35°F to 45°F

• Snap-acting SPST switch • External temperature scale • Easy setpoint adjustment • Galvanized mounting brackets and cover

• Bulb and capillary: 20' 1/8" tubing, 4' capillary Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Each

Order #

Mfg. #

Switch Action

Diff.

B13-348 B13-650

A11A-1C A11B-1C

SPST SPST

Manual Reset

365.00 389.00

8°F

Special Application Temperature Controls • Used for energizing an indicator light after a low temperature cutout • Special 4-wire 2-circuit switch action with isolated contacts • Long-life, snap-acting contacts • Contacts designed so that when main contact opens, auxiliary contact closes

• Line—M2 (main): 120VAC; maximum full load: 16A; maximum locked rotor: 96A • L39-490 and L39-491 have 20' bulb • L39-492 has remote bulb with 6' capillary Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Each

Fig. Order #

Mfg. #

Switch Action

Range

Diff. 5°F

L39-490 L39-491 L39-492

A A B

A70GA-1C A70HA-1C A70HA-2C

SPST Open Low 15°F to 55°F SPST Open Low 15°F to 55°F SPST Open Low 35°F to 80°F

709.00 415.00 575.00

Manual Reset Manual Reset

A

B

Cooling Tower or Evaporative Condenser Control • For control of cooling tower fans • Heavy-duty DPST contacts • Neoprene coated sensing elements • 6' capillary • 11/16" x 6-3/4" bulb

Warning: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Each

Order #

Mfg. #

Switch Action

Range

Diff.

L39-493

A72AE-1C

DPST

25°F to 90°F

4°F to 25°F

825.00

Limit Controls • Used to limit temperature in air conditioning or refrigeration systems • Dual Fahrenheit and Celsius scaleplate • Enclosed snap switch is dust and moisture proof for trouble-free operation

Specifications: • Ambient temperature range: 20°F to 125°F • Differential: 10°F, fixed • B13-315 includes manual reset

Each

Order # Mfg. #

Sensing Element

Temp. Range 20°F to 60°F 20°F to 60°F

Switch Action

B13-315

L480G1044

20' 20'

SPST SPDT

899.00 795.00

B14-302 L480B1239

Low Limit Controller-Freeze Stat • Used to limit or control temperature in air conditioning systems or refrigerated enclosures • Applications include freezer cabinets, display cases, beverage coolers, milk cooling tanks and air conditioners • Special applications include use as frost alarm where frost would damage equipment or crops. • Dual Fahrenheit and Celsius scaleplate

• Enclosed dust and moisture resistant snap switch for trouble-free operation Specifications: • Differential: 10°F • Dimensions: 3-29/32" H x 4-11/16" W x 2-3/32" D • Pilot duty: 125VA at 120/240VAC • Includes manual reset

Each

Order # Mfg. #

Sensing Element

Temp. Range 15°F to 55°F

Switch Action

B14-345 L482A1004 20'

2 SPST: 1 NC, 1 NO

785.00

Electrical Ratings

Break Contact 120V

Make Contact 120V

Break Contact 240V

Make Contact 240V

Full Load

16A 44A 16A

6A

8A

3A

Locked Rotor

36A

39A

18A

Resistive

6A

8A

6A

1302

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